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Graphene induced growth of Sb 2 WO 6 nanosheets for high-performance pseudocapacitive lithium-ion storage

Journal of Alloys and Compounds 2020年 839卷

作者： Fei Wang Yong Liu Huijie Wei Guangxin Wang Fengzhang Ren Xianming Liu Min Chen Alex A. Volinsky Shizhong Wei Yan-Bing He Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal new Materials and Advanced Processing Technology National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan Key Laboratory of Non-Ferrous Materials Science & Processing Technology School of Materials Science and Engineering Henan University of Science and Technology Luoyang 471023 PR China Key Laboratory of Function-oriented Porous Materials College of Chemistry and Chemical Engineering Luoyang Normal University Luoyang 471934 PR China School of Materials Science and Energy Engineering Foshan University Foshan 528000 PR China Department of Mechanical Engineering University of South Florida Tampa FL 33620 USA Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen 518055 PR China

Transition metal oxides with the Aurivillius structure have been studied as electrode materials in lithium-ion batteries (LIBs) owing to their high capacity and proper redox voltage. With the opened Aurivillius structure, the antimony tungstate (Sb 2 WO 6 , SWO) constituted of {Sb 2 O 2 } 2n+ and {WO 4 } 2n− is rarely used as negative electrode material for lithium-ion batteries. Herein, the SWO nanosheets/reduced graphene oxide (rGO) hybrid clusters were synthesized, and their electrochemical performances, kinetics and lithium storage mechanism were systematically studied as negative electrode materials for LIBs. Results show that the graphene oxide (GO) not only restricts the growth of layered-structure SWO, but also induces SWO growth along (002) lattice plane and changes SWO particles to SWO nanosheets. The strong interaction between SWO nanosheets and rGO greatly improve conductivity and structure stability of SWO nanosheets/rGO hybrid clusters, which also can efficiently alleviate agglomeration and volume change of SWO nanosheets during cycling. Meanwhile, the dominating pseudocapacitive contribution (78.2% at 0.8 mV s −1 ) effectively enhanced the electrochemical performance. As an anode material for LIBs, the SWO nanosheets/rGO hybrids deliver a high specific capacity of 1141 mAh g −1 at a current density of 0.2 A g −1 , and their specific discharge capacity is 595 mAh g −1 after 130 cycles at 0.2 A g −1 . This work demonstrates that the SWO nanosheets/rGO hybrid clusters are a promising negative electrode material for high-energy-density LIBs.

关键词： Sb 2 WO 6 nanosheets Graphene induced growth Hybrid clusters Pseudocapacitive Anode Lithium-ion batteries

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Research on thermomechanical property of woven fabric reinforced shape memory polymer composites 21

Research on thermomechanical property of woven fabric reinfo...

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21st International Conference on Composite materials, ICCM 2017

作者： Gu, Jianping Sun, Huiyu Wang, Shaoxiang Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology School of Materials Science and Engineering Nanjing Institute of Technology Nanjing211167 China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Nanjing210016 China

Woven fabric reinforced shape memory polymer composites (WFRSMPCs) with high stiffnesses and high recovery forces are becoming a hot topic in the smart materials area. In the paper, the thermomechanical properties of WFRSMPCs is studied by employing the multi-scale theory to establish the microscopic model for fiber bundles and developing a mesoscopic model for the WFRSMPCs. The viscoelastic properties and the shape memory behavior of the WFRSMPCs are numerically simulated and the effects of process parameters on these properties are studied. The research findings could provide a basis for design and application of WFRSMPCs in engineering. © 2017 International Committee on Composite materials. All rights reserved.

关键词： Composites Shape memory polymer Thermomechanical property Woven fabric

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Correction to: Modification of carbon felt anode with graphene/Fe2O3 composite for enhancing the performance of microbial fuel cell

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Bioprocess and biosystems engineering 2020年第3期43卷 383页

作者： Lin Fu Haoqi Wang Qiong Huang Tian-Shun Song Jingjing Xie State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. College of Biotechnology and Pharmaceutical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) Nanjing University of Information Science and Technology Nanjing 210044 People's Republic of China. State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. tshsong@***. College of Biotechnology and Pharmaceutical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. tshsong@***. Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) Nanjing University of Information Science and Technology Nanjing 210044 People's Republic of China. tshsong@***. State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. xiej@***. College of Biotechnology and Pharmaceutical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. xiej@***. Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing 211816 People's Republic of China. xiej@***.

It has been brought to our attention that in our article, explanations about cable bacteria are not rigorous. We apologize for these and note the specific reporting issues and errors below, with their corrections.

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Spontaneous valley splitting and valley pseudospin field effect transistor of monolayer vagp2se6

arXiv

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arXiv 2018年

作者： Song, Zhigang Sun, Xiaotian Qi, Jingshan Wang, Yangyang Zheng, Jiaxin Pan, Feng Yung, Man-Hong Yang, Jinbo Lu, Jing State Key Laboratory for Mesoscopic Physics School of Physics Peking University Beijing100871 China Institute for Quantum Science and Engineering Department of Physics South University of Science and Technology of China Shenzhen518055 China College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous Materials Luoyang Normal University Luoyang471934 China School of Physics and Electronic Engineering Jiangsu Normal University Xuzhou221116 China Nanophotonics and Optoelectronics Research Center Qian Xuesen Laboratory of Space Technology China Academy of Space Technology Beijing100094 China Peking University Shenzhen Graduate School School of Advanced Materials Shenzhen University Town ShenzhenCN 518055 China Collaborative Innovation Center of Quantum Matter Beijing100871 China Beijing Key Laboratory for Magnetoeletric Materials and Devices Beijing100871 China

Valleytronics is a rising topic to explore the emergent degree of freedom for charge carriers in energy band edges and has attracted a great interest due to many intriguing quantum phenomena and potential application in information processing industry. Creation of permanent valley polarization, i.e. unbalanced occupation at different valleys, is a chief challenge and also urgent question to be solved in valleytronics. Here we predict that the spin-orbit coupling and magnetic ordering allow spontaneous valley Zeeman-type splitting in pristine monolayer of VAgP2Se6 by using first-principles calculations. The Zeeman-type valley splitting can lead to permanent valley polarization after suitable doping. The Zeeman-type valley splitting is similar to the role of spin polarization in spintronics and is a vital requirement for practical devices in valleytronics. The nonequivalent valleys of VAgP2Se6 monolayer can emit or absorb circularly polarized photons with opposite chirality, and thus this material shows a great potential to work as a photonic spin filter and circularly-polarized-light resource. A valley pseudospin field effect transistor (VPFET) is designed based on the monolayer VAgP2Se6 akin to the spin field effect transistors. Beyond common transistors, VPFETs carry information of not only the electrons but also the valley pseudospins. Copyright © 2018, The Authors. All rights reserved.

关键词： Landforms

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Experimental of cathode plasma electrodeposition of nickel

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Chemical Engineering Transactions 2017年 62卷 199-204页

作者： Chen, Jinsong Guo, Jian Qiu, Mingbo Jianming, Yang Jiangsu Key Laboratory of Function Control Technology for Advanced Materials Huaihai Institute of Technology Lianyungang222005 China Lianyungang Shenyu Petrochemical Machinery Equipment Co. Ltd. Lianyungang222005 China Nanjing University of Aeronautics and Astronautics Nanjing222005 China

ISBN: (纸本)9788895608600

Experiment was designed to conduct cathode plasma electrodeposition. In the experimental cathode plasma electrodeposition of nickel, ethanol and citric acid at various concentrations along with different electrolytes were adopted to study the effect of electrolyte composition on the deposition rate and surface appearance of a nickel electrodeposition layer. The results revealed that, as the ethanol concentration of an electrolyte increased, the deposition layer of nickel gradually exhibited smoother surfaces as well as uniform, fine structures thereon. In addition, the concentration enrichment of the;in the electrolytes visibly improved the deposition rate of nickel and decreased the particle size of the deposition layer. Besides, when nickel chloride or nickel sulphate were used as the main salts, the deposition rate of nickel was higher, while it was lower when nickel aminosulphonate was used as the main salt. Additionally, the differences in the three types of main salts exerted a slight influence on the surface appearance of nickel electrodeposition layers. Copyright © 2017, AIDIC Servizi S.r.l.

关键词： Electrolytes

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RESEARCH ON THERMOMECHANICAL PROPERTY OF WOVEN FABRIC REINFORCED SHAPE MEMORY POLYMER COMPOSITES

RESEARCH ON THERMOMECHANICAL PROPERTY OF WOVEN FABRIC REINFO...

引用

第二十一届国际复合材料大会

作者： Jianping Gu Huiyu Sun Shaoxiang Wang Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology School of Materials Science and EngineeringNanjing Institute of Technology State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics

Woven fabric reinforced shape memory polymer composites(WFRSMPCs) with high stiffnesses and high recovery forces are becoming a hot topic in the smart materials area. In the paper, the thermomechanical properties of WFRSMPCs is studied by employing the multi-scale theory to establish the microscopic model for fiber bundles and developing a mesoscopic model for the WFRSMPCs. The viscoelastic properties and the shape memory behavior of the WFRSMPCs are numerically simulated and the effects of process parameters on these properties are studied. The research findings could provide a basis for design and application of WFRSMPCs in engineering.

关键词： Shape memory polymer Woven fabric Composites Thermomechanical property

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Light-Weight Design of CRH Wind Deflector Panels based on Woven Textile Sandwich Composites

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Acta Mechanica Solida Sinica 2016年第2期29卷 208-220页

作者： Hualin Fan Jianfeng Ouyang Fangfang Sun Peishi Yu Ning Kuang Yang Hu College of Mechanics and Materials Hohai University Nanjing 210098 China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Nanjing 210016 China Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment& Technology School of Mechanical Engineering Jiangnan University Wuxi 214122 China Nanjing Fiberglass Research & Design Institute Nanjing 210012 China

The woven textile sandwich composite（WTSC） is a promising lightweight *** bending,two competing core shearing failure modes reduce the strength;deflection induced by the core shearing deformation reduces the flexural *** replace a solid composite laminate,the span of WTSC panel must be greater than a critical value,which was deduced on the condition that the load capacity and flexural rigidity of the WTSC panel are equal to those of the composite *** WTSC panels were tested in bending,so that the failure modes were observed,and the critical spans were *** the alternative design method,the WTSC based wind deflector with reduced weight has been fabricated and mounted on the CRH（China Railway High-speed）.

关键词： sandwich CRH wind deflector light-weight design mechanical testing

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Synergistic catalytic removals of NO, CO and C 3 H 8 over CeSn 0.8 W 0.6 O x /TiAl 0.2 Si 0.1 O x

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Fuel 2016年 180卷 727-736页

作者： Yuesong Shen Yuhao Zong Yifan Ma Shemin Zhu Qijie Jin Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) State Key Laboratory of Materials-Oriented Chemical Engineering College of Materials Science and Engineering Nanjing Tech University Nanjing 210009 China Datang Nanjing Environmental Protection Technology Co. Ltd Nanjing 211106 China

A novel optimized monolith catalyst of CeSn 0.8 W 0.6 O x /TiAl 0.2 Si 0.1 O x with 12 wt% CeSn 0.8 W 0.6 O x calcined at 500 °C exhibited over 90% NO removal efficiency and 100% N 2 selectivity in a broad active temperature window of 252–456 °C under GHSV less than 10,000 h −1 . Moreover, both the CO and C 3 H 8 can be effectively oxidized into CO 2 over the catalyst. Comparatively a commercial V 2 O 5 (WO 3 )/TiO 2 catalyst had no action on catalytic oxidation of CO, over which the C 3 H 8 could only be oxidized to CO. Anyway, excellent redox properties and surface acidity are two active factors for the CeSn 0.8 W 0.6 O x /TiAl 0.2 Si 0.1 O x in catalytic removal of NO, CO and C 3 H 8 .

关键词： CeSn 0.8 W 0.6 O x /TiAl 0.2 Si 0.1 O x Catalytic removal NO CO C 3 H 8 Influencing factors

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Magnetic frustration driven by itinerancy in spinel CoV2O4

arXiv

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arXiv 2017年

作者： Lee, J.H. Ma, J. Hahn, S.E. Cao, H.B. Hong, Tao Okamoto, S. Zhou, H.D. Matsuda, M. Fishman, R.S. School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology Ulsan44919 Korea Republic of Materials Science and Technology Division Oak Ridge National Laboratory Oak RidgeTN37831 United States Key Laboratory of Artificial Structures and Quantum Control Department of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China Collaborative Innovation Center of Advanced Microstructures Nanjing Jiangsu210093 China Department of Physics and Astronomy University of Tennessee KnoxvilleTN37996 United States Neutron Data Analysis and Visualization Division Oak Ridge National Laboratory Oak RidgeTN37831 United States Quantum Condensed Matter Division Oak Ridge National Laboratory Oak RidgeTN37831 United States

Localized spins and itinerant electrons rarely coexist in geometrically-frustrated spinel lattices. We show that the spinel CoV2O4 stands at the crossover from insulating to itinerant behavior and exhibits a complex interplay between localized spins and itinerant electrons. In contrast to the expected paramagnetism, localized spins supported by enhanced exchange couplings are frustrated by the effects of delocalized electrons. This frustration produces a non-collinear spin state and may be responsible for macroscopic spin-glass behavior. Competing phases can be uncovered by external perturbations such as pressure or magnetic field, which enhance the frustration. Copyright © 2017, The Authors. All rights reserved.

关键词： Cobalt compounds

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Electrocatalysts: MOF-Based Metal-Doping-Induced Synthesis of Hierarchical Porous CuN/C Oxygen Reduction Electrocatalysts for Zn–Air Batteries (Small 30/2017)

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Small 2017年第30期13卷

作者： Qingxue Lai Junjie Zhu Yingxuan Zhao Yanyu Liang Jianping He Junhong Chen Jiangsu Key Laboratory of Materials and Technology for Energy Conversion College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 P. R. China Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites Nanjing 211816 P. R. China Department of Mechanical Engineering University of Wisconsin-Milwaukee Milwaukee WI 53211 USA

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