High performance flexible supercapacitors based on porous wood carbon slices derived from Chinese fir wood scraps
作者：
Zhang, Sen;Wu, Chenling;Wu, Wei;Zhou, Cui* ;Xi, Zhaowei;...
期刊：
Journal of Power Sources ,2019年424(Jun.1):1-7 ISSN：0378-7753
通讯作者：
Zhou, Cui;Luo, Yongfeng
作者机构：
[Zhou, Cui; Deng, Yuanyuan; Zhang, Sen; Quan, Peng; Xi, Zhaowei; Wu, Chenling; Wang, Xin; Wu, Wei; Luo, Yongfeng; Li, Xianjun; Zhou, C] Cent South Univ Forestry & Technol, Mat Sci & Engn Sch, Coll Sci, Hunan Prov Key Lab Mat Surface & Interface Sci &, Changsha 410004, Hunan, Peoples R China.;[Luo, Yongfeng] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Guangdong, Peoples R China.
通讯机构：
[Zhou, C; Luo, YF] C;Cent South Univ Forestry & Technol, Mat Sci & Engn Sch, Coll Sci, Hunan Prov Key Lab Mat Surface & Interface Sci &, Changsha 410004, Hunan, Peoples R China.
关键词：
Capacitance;Carbon;Electrodes;Energy storage;Nanopores;Porous carbon;Porous materials;Potassium hydroxide;Specific surface area;Stability;Supercapacitor;Abundant resources;Electrode material;High energy densities;High specific capacitances;Large specific surface areas;Porous wood carbons;Structural stabilities;Wood scrap;Wood
摘要：
Wood carbon slices derived from wood scraps for constructing energy storage electrodes are very important, because they have excellent characteristics, such as structural stability, long cycle life, abundant resources and low prices. However, they have low capacitance as electrode materials for supercapacitors. In this paper, we design a new concept to obtain a porous wood carbon electrode with a large specific surface area. Firstly, CO2 is used to activate carbonized wood to open some closed pores and create some new pores. The activated wood is then soaked into KOH solution to further create new pores. Finally, the carbonized wood is modified with HNO3. After the above treatments, the number of nanopores with a diameter of approximately 2 nm is greatly increased within the wood carbon slices, and their specific surface area is increased to 703.5 m2 g−1. The single electrode material shows excellent performance with a high specific capacitance of 285.6 F g−1 and a high energy density of 38.0 mWh cm−3, which has more than twice the capacitance of the supercapacitor based on biomass carbon materials modified by diluted HNO3. Therefore, the application of wood scraps can meet the basic energy storage needs and realize the waste into treasure. © 2019 Elsevier B.V.
语种：
英文
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VEGFR-2蛋白与其抑制剂的分子动力学模拟以及结合自由能计算
作者：
王宇;罗勇锋
期刊：
中国新通信 ,2019年21(06):243 ISSN：1673-4866
作者机构：
中南林业科技大学理学院;[罗勇锋; 王宇] 中南林业科技大学
关键词：
VEGFR-2蛋白;抑制剂
摘要：
VEGFR2蛋白是抗肿瘤治疗中的一个重要靶点,针对该靶点设计新型抑制剂是具有重要的生理意义.本文采用了分子动力学模拟取样,结合MM/GBSA方法计算了小分子900和VEGFR-2之间的结合自由能,并进一步进行了能量分解.研究结果表明,体系范德华作用是驱动小分子900和VEGFR-2蛋白结合的主要驱动力.能量分解结果表明,结合过程中的关键氨基酸大多数都是疏水性氨基酸.期望我们的研究可以为设计具有潜力的VEGFR-2抑制剂提供帮助.
语种：
中文
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Carbon nanotubes grown on the inner wall of carbonized wood tracheids for high-performance supercapacitors
作者：
Wu, Chenling;Zhang, Sen;Wu, Wei;Xi, Zhaowei;Zhou, Cui* ;...
期刊：
Carbon ,2019年150:311-318 ISSN：0008-6223
通讯作者：
Zhou, Cui;Luo, Yongfeng
作者机构：
[Zhang, Sen; Xi, Zhaowei; Wang, Xin; Bai, Yuanjuan; Wu, Wei; Liu, Gonggang; Zhang, Xiang; Zhou, Cui; Deng, Yuanyuan; Wu, Chenling; Luo, Yongfeng; Li, Xianjun] Cent South Univ Forestry & Technol, Hunan Prov Key Lab Mat Surface & Interface Sci &, Coll Sci, Mat Sci & Engn Sch, Changsha 410004, Hunan, Peoples R China.;[Chen, Daoyong; Luo, Yongfeng] Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China.
通讯机构：
[Zhou, C; Luo, YF] C;Cent South Univ Forestry & Technol, Hunan Prov Key Lab Mat Surface & Interface Sci &, Coll Sci, Mat Sci & Engn Sch, Changsha 410004, Hunan, Peoples R China.
关键词：
Carbon nanotubes;Supercapacitor;Wood carbon slice;Wood scraps
摘要：
Supercapacitors made by wood scraps are low cost, ecofriendly and accessible. However, there are some problems, such as a small specific surface area and low specific capacitance. How to obtain a high-performance supercapacitor by effectively increasing the specific surface area without affecting the conductivity is still a challenge. In this paper, carbon nanotubes (CNTs) were first synthesized on the inner wall of tracheids in wood carbon slices, which have complete structures and do not require any conductive additives and binder. Nanonickel particles as catalysts were uploaded on the inner wall of each tracheid for growing the CNTs, which can increase the specific surface area from 365.5 to 537.9 m2 g−1, while improving the electrochemical performance to 215.3 F g−1 or 76.5 F cm−3. The energy density of the all-solid-state supercapacitor is 39.8 Wh kg−1, and 96.2% of the capacitance could still be retained after 10,000 charging/discharging cycles. This capacitance value is approximately five times as high as that of activated wood carbon and is equal to or higher than that of supercapacitors based on wood carbon slices with pseudocapacitance materials. CNTs will greatly promote the application of wood scraps as valuable commodities. © 2019 Elsevier Ltd
语种：
英文
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Exploring binding mechanisms of VEGFR2 with three drugs lenvatinib, sorafenib, and sunitinib by molecular dynamics simulation and free energy calculation.
作者：
Wang, Yu;Peng, Cheng;Wang, Guimin;Xu, Zhijian;Luo, Yongfeng* ;...
期刊：
CHEMICAL BIOLOGY & DRUG DESIGN ,2019年93(5):934-948 ISSN：1747-0277
通讯作者：
Luo, Yongfeng;Wang, Jinan
作者机构：
[Wang, Yu; Luo, Yongfeng] Cent South Univ Forestry & Technol, Coll Sci, Hunan Prov Key Lab Mat Surface & Interface Sci &, Changsha, Hunan, Peoples R China.;[Wang, Yu; Peng, Cheng; Zhu, Weiliang; Wang, Jinan; Wang, Guimin; Xu, Zhijian] Chinese Acad Sci, CAS Key Lab Receptor Res, Drug Discovery & Design Ctr, Shanghai Inst Mat Med, Shanghai, Peoples R China.;[Wang, Jinan] Univ Kansas, Ctr Computat Biol, Lawrence, KS 66045 USA.;[Wang, Jinan] Univ Kansas, Dept Mol Biosci, Lawrence, KS 66045 USA.
通讯机构：
[Luo, Yongfeng; Wang, Jinan] C;Cent South Univ Forestry & Technol, Coll Sci, Hunan Prov Key Lab Mat Surface & Interface Sci &, Changsha, Hunan, Peoples R China.;Chinese Acad Sci, CAS Key Lab Receptor Res, Drug Discovery & Design Ctr, Shanghai Inst Mat Med, Shanghai, Peoples R China.
关键词：
MM/GBSA;VEGFR2-drugs interaction;hydrophobic contact scanning;molecular dynamics simulation
摘要：
Lenvatinib (LEN), sorafenib (SOR), and sunitinib (SUN) are drugs targeting vascular endothelial growth factor receptor 2 (VEGFR2). Despite sharing similar chemical structures and bioactivities, LEN and SOR bind to different functional states of VEGFR2, viz. DFG-in and DFG-out state, respectively. SUN binds to the DFG-out state of VEGFR2 just like SOR but with less potency. Thus, detail binding mechanisms between VEGFR2 and these drugs, especially dynamic interaction, are valuable for future drug design. In the present work, molecular dynamics simulation, essential dynamic analysis, and molecular mechanics/generalized born surface area were performed to these VEGFR2-drugs systems. Rank of calculated binding affinities is in accordance with the experimental data. The binding free energy calculation suggests that van der Waals interaction plays a vital role in the binding. Per-residue free energy decomposition indicates that residues L840, V848, A866, E885, L889, V899, V916, F918, C919, L1035, C1045, D1046, and F1047 play an important role in the binding between VEGFR2 and LEN/SOR. While residues L840, V848, E917, F918, C919, G922, L1035, and F1047 contribute the major hydrophobic interaction for SUN binding to the receptor. Our results also reveal that residue E885/D1046 plays a vital role in binding via forming hydrogen bonds with drugs.
语种：
英文
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基于水曲柳薄片的柔性超级电容器研究
作者：
熊峰;罗勇锋(通讯作者)
期刊：
电子制作 ,2018年(4):25-26 ISSN：1006-5059
作者机构：
中南林业科技大学理学院,湖南长沙,410004;[罗勇锋(通讯作者); 熊峰] 中南林业科技大学
关键词：
超级电容器;二氧化锰;石墨烯;水曲柳薄片
摘要：
用石墨烯为基底通过水热法原位合成二氧化锰纳米复合材料，以水曲柳薄片为基底，在其上铺上可纺碳纳米管薄膜作为集流体，PVA-磷酸为凝胶电解液构筑新型柔性超级电容器。结果表明，二氧化锰与石墨烯复合后显著提高了超级电容器的综合性能，当石墨烯质量比达到34%的复合材料用作电信容器的活性物质时获得比电容为187Fg-1（电流为2×10-4A），同样条件下纯二氧化锰用作电极材料活性物质只获得63.75Fg-1的比电容。
语种：
中文
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Recent Progress in Flexible Fibrous Batteries
作者：
Xi, Zhaowei;Zhang, Xiang;Ma, Yuansheng;Zhou, Cui;Yang, Jing;...
期刊：
ChemElectroChem ,2018年5(21):3127-3137 ISSN：2196-0216
通讯作者：
Luo, Yongfeng;Chen, Daoyong
作者机构：
[Zhou, Cui; Luo, Yongfeng; Chen, Daoyong; Xi, Zhaowei; Wu, Yiqiang; Ma, Yuansheng; Yang, Jing; Li, Xianjun; Zhang, Xiang] Cent South Univ Forestry & Technol, Mat Sci & Engn Sch, Coll Sci, Changsha 410004, Hunan, Peoples R China.;[Xi, Zhaowei; Luo, Yongfeng] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Guangdong, Peoples R China.;[Luo, Yongfeng; Chen, Daoyong] Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China.
通讯机构：
[Luo, YF; Chen, DY] C;[Luo, Yongfeng; Luo, YF; Chen, DY] F;Cent South Univ Forestry & Technol, Mat Sci & Engn Sch, Coll Sci, Changsha 410004, Hunan, Peoples R China.;Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Guangdong, Peoples R China.;Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China.
关键词：
flexible fibrous batteries;lithium-ion batteries;metal-air batteries;lithium-sulfur batteries;wearable devices
摘要：
Flexible fibrous batteries have attracted unprecedented attention, owing to the development of wearable electronic devices, which have the advantages of flexibility, weavability, and miniaturization compared with conventional bulky batteries. In this Minireview, we summarize the latest developments in flexible fibrous batteries, including lithium-ion batteries, lithium–sulfur batteries, sodium-ion batteries, and so forth. We also discuss the future directions and challenges of flexible fibrous batteries. © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
语种：
英文
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Switching freely between superluminal & subluminal light propagation in a monolayer MoS 2 nanoresonator
作者：
Li, Jian-Bo* ;Xiao, Si;Liang, Shan;He, Meng-Dong;Kim, Nam-Chol;...
期刊：
Optics Express ,2017年25(12):13567-13576 ISSN：1094-4087
通讯作者：
Li, Jian-Bo
作者机构：
[Luo, Jian-Hua; He, Meng-Dong; Luo, Yongfeng; Chen, Li-Qun; Li, Jian-Bo] Cent South Univ Forestry & Technol, Inst Math & Phys, Changsha 410004, Hunan, Peoples R China.;[Xiao, Si] Cent South Univ, Sch Phys & Elect, Hunan Key Lab Super Microstruct & Ultrafast Proc, Changsha 410083, Hunan, Peoples R China.;[Liang, Shan] Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China.;[Kim, Nam-Chol] Kim II Sung Univ, Dept Phys, Pyongyang, South Korea.
通讯机构：
[Li, Jian-Bo] C;Cent South Univ Forestry & Technol, Inst Math & Phys, Changsha 410004, Hunan, Peoples R China.
关键词：
Carbon nanotubes;Excitons;Layered semiconductors;Molybdenum compounds;Monolayers;Phonons;Yarn;Absorption peaks;Device application;Exciton-phonon couplings;Group velocities;Large dispersion;Optical switching;Orders of magnitude;Propagation of lights;Slow light
摘要：
We theoretically propose a feasible scheme to advance or slow the propagation of light in a monolayer MoS 2 nanoresonator (NR). The scheme allows one to easily turn on or off the fast (superluminal) and slow (subluminal) light effects and switch freely between fast and slow light propagation by only adjusting the frequency or intensity of the pump field. As the exciton interacts strongly with the phonons in MoS 2 , the slow light effect will appear along with a large dispersion with a very steep negative slope and a sharp absorption peak. Especially, the maximal group velocity index of the slow light in the monolayer MoS 2 NR can reach two orders of magnitude larger than that in a carbon nanotube resonator. These results provide a new way to measure the exciton-phonon coupling strength and may prove useful in device applications such as optical switching and optical signal processing. © 2017 Optical Society of America.
语种：
英文
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Theoretical investigation of temperature distribution uniformity in wood during microwave drying in three-port feeding circular resonant cavity
作者：
Zhang, Jianxiong;Luo, Yongfeng* ;Liao, Chunrong;Xiong, Feng;Li, Xi;...
期刊：
Drying Technology ,2017年35(4):409-416 ISSN：0737-3937
通讯作者：
Luo, Yongfeng;Li, Xianjun
作者机构：
[Zhang, Jianxiong; Sun, Lilu; Xiong, Feng; Luo, Yongfeng; Liao, Chunrong; Li, Xi] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410018, Hunan, Peoples R China.;[Li, Xianjun] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410018, Hunan, Peoples R China.
通讯机构：
[Luo, Yongfeng; Li, Xianjun] C;Cent South Univ Forestry & Technol, Coll Sci, Changsha 410018, Hunan, Peoples R China.;Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410018, Hunan, Peoples R China.
关键词：
Finite element analysis;microwave drying;moisture content;temperature distribution;uniform heating of wood
摘要：
The temperature distribution within wood samples during microwave drying is significantly influenced by the dimensions of the wood sample, microwave frequency, heating time, and moisture content of the wood. Here, the temperature distribution inside the wood during microwave drying has been studied by finite element analysis in a three-port feeding circular resonant cavity. With an increasing radius of the wood, the calculated temperature variation coefficient decreased from 54.3 to 23.5% and the energy efficiency increased from 18 to 95%. When the radius of the wood was 0.8 times that of the circular cavity, the drying process was optimal. The theoretical calculations indicated that the length of the wood also affects the temperature variation coefficient. When the length of wood was more than the height of waveguide, the temperature variation coefficient was less than 40.5% and the energy efficiency was more than 90%. Other factors such as microwave frequency, heating time, and moisture content also influenced the uniformity of temperature distribution. This study helps to better understand the microwave drying process to facilitate its further applications for wood drying. © 2017 Taylor & Francis.
语种：
英文
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不同含水率的杨木微波穿透深度探究
作者：
廖春荣;罗勇锋;贺霞;张剑雄;熊峰;...
期刊：
中南林业科技大学学报 ,2017年37(10):133-138 ISSN：1673-923X
作者机构：
中南林业科技大学理学院, 湖南, 长沙, 410018;中南林业科技大学材料科学与工程学院, 湖南, 长沙, 410018;[廖春荣; 罗勇锋; 张剑雄; 熊峰] 中南林业科技大学理学院, 湖南, 长沙, 410018;[贺霞; 谢杰; 李贤军] 中南林业科技大学材料科学与工程学院, 湖南, 长沙, 410018
关键词：
有限元法;微波加热;微波穿透深度;微波干燥;干燥均匀性
摘要：
采用有限元分析方法对不同含水率杨木的微波穿透深度进行了理论研究,探索出微波频率和杨木含水率对微波穿透深度的影响规律,结果表明:当杨木含水率由30%依次增加到110%时,频率为2.45 GHz微波的穿透深度由22.30 cm减小到3.64 cm;频率为0.915 GHz的微波穿透深度从60.32 cm降低到9.85 cm,同时含水率增加后杨木内部温度均匀性相应变差。研究表明,在木材干燥过程中应尽量将样品的厚度控制在微波穿透深度的范围内,可以有效改善干燥均匀性。
语种：
中文
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导电聚合物在纤维状能源器件中的应用进展
作者：
Liao Chun-Rong;Xiong Feng;Li Xian-Jun;Wu Yi-Qiang;Luo Yong-Feng*
期刊：
物理化学学报 ,2017年33(2):329-343 ISSN：1000-6818
通讯作者：
Luo Yong-Feng
作者机构：
[Xiong Feng; Luo Yong-Feng; Liao Chun-Rong] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410018, Peoples R China.;[Xiong Feng; Luo Yong-Feng; Liao Chun-Rong] Fudan Univ, Lab Adv Mat, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China.;[Li Xian-Jun; Wu Yi-Qiang] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410018, Peoples R China.
通讯机构：
[Luo Yong-Feng] C;[Luo Yong-Feng] F;Cent South Univ Forestry & Technol, Coll Sci, Changsha 410018, Peoples R China.;Fudan Univ, Lab Adv Mat, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China.
关键词：
Conductive polymer;Fiber;Supercapacitor;Solar cell;Fibrous energy device
摘要：
Conductive polymers implemented in fibrous energy devices have drawn considerable attention because of their economic importance, good environmental stability, and electrical conductivity. Conductive polymers demonstrate interesting mechanical, electronic, and optical properties, controllable chemical and electrochemical behavior, and facile processability. This review elaborates on the latest research in conductive polymers in fibrous energy devices, such as fibrous supercapacitors, fibrous solar cells, and fibrous integrated energy devices. The performance requirements of these fibrous energy devices, with specific reference to related materials, fabrication techniques, fiber structure, and electronic transport as well as mechanical functionality, are also reviewed in this paper.
语种：
英文
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Light and electrically responsive materials based on aligned carbon nanotubes
作者：
Luo, Yongfeng* ;Yu, Xinghai*
期刊：
European Polymer Journal ,2016年82:290-299 ISSN：0014-3057
通讯作者：
Luo, Yongfeng;Yu, Xinghai
作者机构：
[Luo, Yongfeng; Yu, Xinghai] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.;[Yu, Xinghai] Hexi Univ, Coll Chem & Chem Engn, Zhangye 734000, Gansu, Peoples R China.;[Luo, Yongfeng; Yu, Xinghai] Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China.;[Luo, Yongfeng; Yu, Xinghai] Fudan Univ, Adv Mat Lab, Shanghai 200438, Peoples R China.
通讯机构：
[Luo, YF; Yu, XH] C;Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.
关键词：
Aligned carbon nanotubes;Chromism;Deformation;Responsive materials
摘要：
Responsive materials have been investigated for a lot of applications such as smart devices and sensors, which change shape, color, transparency, or functionality when stimulated by external stimuli. However, the practical applications of responsive materials have been largely hampered by their irreversible transitions under limited stimuli such as temperature, pH, and chemical. As a result, a lot of research has been paid to improve the reversibility of chromatism and deformation. In this review, the recent research of responsive materials based on aligned carbon nanotubes is described, with the focus on the responsive materials in response to light and electricity. © 2015 Elsevier Ltd
语种：
英文
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Monodisperse mesoporous TiO2 microspheres for dye sensitized solar cells
作者：
Zhao, Tao;Luo, Wei* ;Deng, Yonghui;Luo, Yongfeng;Xu, Pengcheng;...
期刊：
Nano Energy ,2016年26:16-25 ISSN：2211-2855
通讯作者：
Luo, Wei;Wang, Lianjun
作者机构：
[Luo, Wei; Wang, Lianjun; Zhao, Tao; Jiang, Wan] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.;[Luo, Wei] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China.;[Ren, Yuan; Liu, Yong; Deng, Yonghui] Fudan Univ, State Key Lab Mol Engn Polymers, Collaborat Innovat Ctr Chem Energy Mat, Dept Chem, Shanghai 200433, Peoples R China.;[Ren, Yuan; Liu, Yong; Deng, Yonghui] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Collaborat Innovat Ctr Chem Energy Mat, State Key Lab ASIC & Syst, Shanghai 200433, Peoples R China.;[Deng, Yonghui; Xu, Pengcheng] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai 200050, Peoples R China.
通讯机构：
[Luo, W; Wang, LJ] D;Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.
关键词：
Confinement;Dye-sensitized solar cells;Interface assembly;Mesoporous materials;Titania
摘要：
Uniform discrete mesoporous titania microspheres have been synthesized via a facile and controllable interface-directed co-assembly approach by using 3-dimensional macroporous carbon (3DOMC) as the nanoreactor for the confined co-assembly of template molecules and titania source. By adjusting the synthesis parameters, hollow mesoporous microspheres and hemi-microspheres can also be synthesized. The obtained mesoporous TiO<inf>2</inf>microspheres possess a large pore size (4.7 nm), high accessible surface area (145 m<sup>2</sup>/g), large pore volume (0.26 cm<sup>3</sup>/g) and highly crystallized anatase pore walls. The dye-sensitized solar cell based on the mesoporous TiO<inf>2</inf>microspheres exhibits high photoconversion efficiencies up to 8.5%, which are largely attributed to their intrinsic high surface area, high porosity and well-connected crystalline framework.<br/> ©2016 Elsevier Ltd
语种：
英文
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应用物理专业本科生创新能力培养和科学研究有机融合的探索实践
作者：
罗勇锋;王新军;贺梦冬;彭小芳;罗建花;...
期刊：
电子制作 ,2015年(20):59 ISSN：1006-5059
作者机构：
中南林业科技大学理学院 湖南长沙 410004;[贺梦冬; 彭小芳; 陈丽群; 罗建花; 王新军; 罗勇锋] 中南林业科技大学
关键词：
应用物理;光电领域;高校工作者;物理理论;高素质人才培养;教学组织形式;学习难度;课堂教学;课程设置
摘要：
我校应用物理专业开办了光电子方向,本文以培养光电领域创新意识和创新能力为例,分析影响学生创新能力各种因素,提出在应用物理专业中构建创新能力培养和科学研究有机融合的创新教学体系。
语种：
中文
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Aligned carbon nanotube/molybdenum disulfide hybrids for effective fibrous supercapacitors and lithium ion batteries
作者：
Luo, Yongfeng;Zhang, Ye;Zhao, Yang;Fang, Xin;Ren, Jing;...
期刊：
Journal of Materials Chemistry A ,2015年3(34):17553-17557 ISSN：2050-7488
通讯作者：
Peng, Huisheng
作者机构：
[Fang, Xin; Jiang, Yishu; Weng, Wei; Zhang, Ye; Zhao, Yang; Wang, Bingjie; Peng, Huisheng; Luo, Yongfeng; Ren, Jing; Sun, Hao; Cheng, Xunliang] Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China.;[Fang, Xin; Jiang, Yishu; Weng, Wei; Zhang, Ye; Zhao, Yang; Wang, Bingjie; Peng, Huisheng; Luo, Yongfeng; Ren, Jing; Sun, Hao; Cheng, Xunliang] Fudan Univ, Adv Mat Lab, Shanghai 200438, Peoples R China.;[Luo, Yongfeng] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Peng, Huisheng] F;Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China.
摘要：
An aligned carbon nanotube/MoS<inf>2</inf>nanosheet hybrid fiber was synthesized to display combined remarkable mechanical, electronic and electrochemical properties. It was used to fabricate flexible fibrous supercapacitors and lithium ion batteries with a high specific capacitance of 135 F cm<sup>-3</sup>and a high specific capacity of 1298 mA h g<sup>-1</sup>, respectively. ©The Royal Society of Chemistry 2015.
语种：
英文
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Mesoporous TiO2 Mesocrystals: Remarkable Defects-Induced Crystallite-Interface Reactivity and Their in Situ Conversion to Single Crystals
作者：
Liu, Yong;Luo, Yongfeng;Elzatahry, Ahmed A.;Luo, Wei;Che, Renchao;...
期刊：
ACS CENTRAL SCIENCE ,2015年1(7):400-408 ISSN：2374-7943
通讯作者：
Zhao, Dongyuan
作者机构：
[Yao, Chi; Che, Renchao; Tang, Yun; Wang, Chun; Zhao, Dongyuan; Sun, Zhenkun; Shen, Dengke; Gao, Wenjun; Deng, Yonghui; Zhou, Gang; Ling, Yun; Lan, Kun; Li, Bin; Luo, Wei; Yuan, Kaiping; Luo, Yongfeng; Liu, Yong; Wang, Jingxiu; Zheng, Gengfeng; Fan, Jianwei; Liu, Zhengwang] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Dept Chem, State Key Lab Mol Engn Polymers,Lab Adv Mat, Shanghai 200433, Peoples R China.;[Luo, Yongfeng] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.;[Elzatahry, Ahmed A.] Qatar Univ, Coll Arts & Sci, Mat Sci & Technol Program, Doha, Qatar.;[Luo, Wei] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.;[Fan, Jianwei] Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China.
通讯机构：
[Zhao, Dongyuan] F;Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Dept Chem, State Key Lab Mol Engn Polymers,Lab Adv Mat, Shanghai 200433, Peoples R China.
摘要：
Oriented self-assembly between inorganic nanocrystals and surfactants is emerging as a route for obtaining new mesocrystalline semiconductors. However, the actual synthesis of mesoporous semiconductor mesocrystals with abundant surface sites is extremely difficult, and the corresponding new physical and chemical properties arising from such an intrinsic porous mesocrystalline nature, which is of fundamental importance for designing high-efficiency nanostructured devices, have been rarely explored and poorly understood. Herein, we report a simple evaporation-driven oriented assembly method to grow unprecedented olive-shaped mesoporous TiO2 mesocrystals (FDU-19) self-organized by ultrathin flake-like anatase nanocrystals (~8 nm in thickness). The mesoporous mesocrystals FDU-19 exhibit an ultrahigh surface area (~189 m2/g), large internal pore volume (0.56 cm3/g), and abundant defects (oxygen vacancies or unsaturated Ti3+ sites), inducing remarkable crystallite-interface reactivity. It is found that the mesocrystals FDU-19 can be easily fused in situ into mesoporous anatase single crystals (SC-FDU-19) by annealing in air. More significantly, by annealing in a vacuum (~4.0 × 10-5 Pa), the mesocrystals experience an abrupt three-dimensional to two-dimensional structural transformation to form ultrathin anatase single-crystal nanosheets (NS-FDU-19, ~8 nm in thickness) dominated by nearly 90% exposed reactive (001) facets. The balance between attraction and electrostatic repulsion is proposed to determine the resulting geometry and dimensionality. Dye-sensitized solar cells based on FDU-19 and SC-FDU-19 samples show ultrahigh photoconversion efficiencies of up to 11.6% and 11.3%, respectively, which are largely attributed to their intrinsic single-crystal nature as well as high porosity. This work gives new understanding of physical and chemical properties of mesoporous semiconductor mesocrystals and opens up a new pathway for designing various single-crystal semiconductors with desired mesostructures for applications in catalysis, sensors, drug delivery, optical devices, etc. © 2015 American Chemical Society.
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英文
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Mathematical Simulation and Design of a Rectangular Cavity of Microwave Pretreatment Equipment Used for Wood Modification
作者：
Li, Xi;Zhang, Jianxiong;Liao, Chunrong;Chen, Hongbin;Luo, Yongfeng* ;...
期刊：
BIORESOURCES ,2015年10(1):527-537 ISSN：1930-2126
通讯作者：
Luo, Yongfeng
作者机构：
[Zhang, Jianxiong; Chen, Hongbin; Luo, Yongfeng; Li, Xi; Liao, Chunrong] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.;[Li, Xianjun] Cent South Univ Forestry & Technol, Mat Sci & Engn Sch, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Luo, Yongfeng] C;Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.
关键词：
Energy efficiency;Microwave pretreatment;Rectangular resonant cavity;Temperature distribution;Wood
摘要：
Wood pretreated by high-intensity microwaves was theoretically studied based on the Maxwell electromagnetic field equations and the heat and mass transfer mechanism of wood. The effects of feeding modes on the temperature field uniformity and energy efficiency were studied using the finite element method, and optimized parameters of the rectangular microwave resonant cavity were achieved. The results show that the feeding modes had a great effect on the temperature field uniformity of the wood and the energy efficiency. Compared to the side single-port, the upper single-port, and the upper-under port feeding modes, the two-side ports feeding mode was the best for temperature field uniformity and energy efficiency.
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英文
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Theoretical Study of Wood Microwave Pretreatment in Rectangular Cavity for Fabricating Wood-Based Nanocomposites
作者：
Luo, Yongfeng;Li, Xi;Li, Xianjun* ;Zhang, Jianxiong
期刊：
Journal of Nanomaterials ,2014年2014:1-7 ISSN：1687-4110
通讯作者：
Li, Xianjun
作者机构：
[Zhang, Jianxiong; Luo, Yongfeng; Li, Xi] Cent South Univ Forestry & Technol, Inst Math & Phys, Changsha 410004, Hunan, Peoples R China.;[Li, Xianjun] Cent South Univ Forestry & Technol, Mat Sci & Engn Sch, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Li, Xianjun] C;Cent South Univ Forestry & Technol, Mat Sci & Engn Sch, Changsha 410004, Hunan, Peoples R China.
摘要：
Modifying wood by high intensive microwave pretreatment method is widely researched for the fabrication of wood-based nanocomposites, but the temperature uniformity and energy efficiency of microwave pretreatment have not reached the ideal state. In this study, the pretreated wood in rectangular cavity by high intensive microwave is theoretically studied by the finite element method based on the Maxwell electromagnetic field equations and the heat and mass transfer theory. The results show that the temperature uniformity and energy efficiency are related to the microwave feeding modes. Compared with the single-port and the two-port feeding mode, the four-port feeding mode is the best case on temperature uniformity and energy efficiency. The optimized parameters of cavity to pretreatment wood are achieved, which are that the height of cavities is between 0.08 m and 0.11 m in the four-port feeding mode when the thickness of wood is 0.06 m. ©2014 Yongfeng Luo et al.
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英文
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The Cellulose Nanofibers for Optoelectronic Conversion and Energy Storage
作者：
Luo, Yongfeng;Zhang, Jianxiong;Li, Xi;Liao, Chunrong;Li, Xianjun*
期刊：
Journal of Nanomaterials ,2014年2014:1-13 ISSN：1687-4110
通讯作者：
Li, Xianjun
作者机构：
[Zhang, Jianxiong; Luo, Yongfeng; Li, Xi; Liao, Chunrong] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.;[Li, Xianjun] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Li, Xianjun] C;Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
摘要：
Cellulose widely exists in plant tissues. Due to the large pores between the cellulose units, the regular paper is nontransparent that cannot be used in the optoelectronic devices. But some chemical and physical methods such as 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) oxidation can be used to improve the pores scale between the cellulose units to reach nanometer level. The cellulose nanofibers (CNFs) have good mechanical strength, flexibility, thermostability, and low thermal expansion. The paper made of these nanofibers represent a kind of novel nanostructured material with ultrahigh transparency, ultrahigh haze, conductivity, biodegradable, reproducible, low pollution, environment friendly and so on. These advantages make the novel nanostructured paper apply in the optoelectronic device possible, such as electronics energy storage devices. This kind of paper is considered most likely to replace traditional materials like plastics and glass, which is attracting widespread attention, and the related research has also been reported. The purpose of this paper is to review CNFs which are applied in optoelectronic conversion and energy storage.
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英文
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The Carbon Nanotube Fibers for Optoelectric Conversion and Energy Storage
作者：
Luo, Yongfeng;Li, Xi;Zhang, Jianxiong;Liao, Chunrong;Li, Xianjun*
期刊：
Journal of Nanomaterials ,2014年2014:1-13 ISSN：1687-4110
通讯作者：
Li, Xianjun
作者机构：
[Zhang, Jianxiong; Luo, Yongfeng; Li, Xi; Liao, Chunrong] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.;[Li, Xianjun] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Li, Xianjun] C;Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
摘要：
This review summarizes recent studies on carbon nanotube (CNT) fibers for weavable device of optoelectric conversion and energy storage. The intrinsic properties of individual CNTs make the CNT fibers ideal candidates for optoelectric conversion and energy storage. Many potential applications such as solar cell, supercapacitor, and lithium ion battery have been envisaged. The recent advancement in CNT fibers for optoelectric conversion and energy storage and the current challenge including low energy conversion efficiency and low stability and future direction of the energy fiber have been finally summarized in this paper. Copyright © 2014 Yongfeng Luo et al.
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英文
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Functional nanomaterials for optoelectric conversion and energy storage 2014
作者：
Yongfeng Luo;Li Li;Sanqing Huang;Tao Chen;Hongmei Luo
期刊：
Journal of Nanomaterials ,2014年2014:1-2 ISSN：1687-4110
通讯作者：
Luo, Yongfeng
作者机构：
[Hongmei Luo] Department of Chemical Engineering, New Mexico State University, Las Cruces, NM 88003, USA;[Yongfeng Luo] College of Science, Central South University of Forestry and Technology, Changsha, Hunan 410004, China;[Li Li] Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China;[Tao Chen] Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, USA;[Sanqing Huang] School of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
通讯机构：
College of Science, Central South University of Forestry and Technology, Changsha, Hunan, China
摘要：
Lithium batteries with high safety, long cycle life, and high rate performance are very important for their applications. The applicable research progress of carbon nanotubes in lithium-ion battery is described in “Progress in application of CNTs in lithium-ion batteries,” and its future development is put forward from its two aspects of being not only the anodic conductive reinforcing material and the cathodic energy storage material but also the electrically conductive framework material. Interconnected LiFePO4/carbon nanoparticles for Li-ion battery cathode have been fabricated by sol-gel method followed by a carbon coating process involving redox reactions in “High cycling performance cathode material: interconnected LiFePO4/carbon nanoparticles fabricated by sol-gel method.”
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英文
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