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您的检索式：作者名="CHEN FanYan"
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| 1 | Effect of current polarity on electrical sliding wear behavior of Cu-WS_2-graphite-WS_2 nanotube composites in air and vacuum conditions显示文摘In this paper Cu-WS2-graphite-WS2nanotube composites were fabricated by powder metallurgy hot pressing method.The effect of current polarity on the wear rates and contact voltage drops of the composites were investigated using a brush-on-slip ring tribometer rubbing against Cu-5 wt.%Ag alloy ring in air and vacuum,respectively.The worn surfaces of the composites were analyzed by scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).Surface profile curves of the worn tracks were measured using the surface profiler.The results demonstrated that the current polarity has a significant effect on the wear rates and contact voltage drops of the composites in both air and vacuum conditions.Positive brush possesses a higher wear rate compared with the negative brush in the air atmosphere since the electrical field direction activates oxidation at the positive brush surface while inhibits oxidation at the negative brush surface.Except for the regular wear losses,the combined effect of molten metal bridge erosion and arc erosion cause the positive brush to lose extra material and the negative brush to gain extra material,so the positive brush shows a higher wear rate in the vacuum condition.The contact voltage drop of the positive brush is lower than that of the negative brush in the air atmosphere,but contrarily,the positive brush shows a higher contact voltage drop in the vacuum condition. | QIAN Gang FENG Yi CHEN FanYan LIU WenHong ZHANG XueBin LIU YanFang | 2013 | Science China(Technological Sciences)2013，56，11： | 5 |
| 2 | Bi and S Co-doping g-C_(3)N_(4)to Enhance Internal Electric Field for Robust Photocatalytic Degradation and H_(2) Production显示文摘By adjusting the type and proportion of doping elements in the g-C_(3)N_(4)-based photocatalyst,the internal electric field(IEF)strength of the semiconductor can be regulated.This can effectively enhance the driving force of charge separation in the photocatalytic process.It is found that the introduction of appropriate concentration of Bi and S into the skeleton structure of g-C_(3)N_(4)can achieve efficient degradation of tetracycline(TC)and other pollutants in the liquid environment and excellent photocatalytic H_(2)evolution performance(1139μmol·L^(-1)·h^(-1)).Since the prepared samples have similar crystal structures,the relative strength of IEF can be calculated.It can be used as the basis for adjusting the IEF strength of g-C_(3)N_(4)-based semiconductor by element doping.In addition,the Bi and S co-doped g-C_(3)N_(4)samples after solvothermal reflux show good chemical stability and can reduce the nanostructure defects caused by co-doping of heteroatoms,thus it provides a novel solution for the construction of g-C_(3)N_(4)-based dual-function photocatalyst with high activity and stability. | Yan Hu Xibao Li Weiwei Wang Fang Deng Lu Han Xiaoming Gao Zhijun Feng Zhi Chen Juntong Huang Fanyan Zeng Fan Dong | 2022 | Chinese Journal of Structural Chemistry2022，41，6： | 1 |
| 3 | Decoration of carbon encapsulated nitrogen-rich MoxN with few-layered MoSe2 nanosheets for high-performance sodium-ion storage显示文摘Transition metal nitrides have become the focus of research in sodium ion batteries(SIBs)due to their unique metal properties and high theoretical capacity.However,the low actual capacity is still the main bottleneck for their application.Herein,using Mo-aniline frameworks as precursors,the carbon encapsulated nitrogen-rich Mo_(x)N is decorated by few-layered MoSe_(2) nanosheets(MoSe_(2)@Mo_(x)N/C-I)after the facile calcinating,selenizing,and nitriding.The carbon encapsulation can effectively strengthen the structural stability of Mo_(x)N.The nitrogen-rich Mo_(x)N and decoration of few-layered MoSe_(2) can create rich heterointerfaces and extra active sites for rapid sodium-ion storage,thus promoting reaction kinetics and improving actual capacity.The MoSe_(2)@Mo_(x)N/C-I as an anode achieves a large reversible capacity of 522.8 mAh g^(-1)at 0.1 A g^(-1),and 254.3 mAh g^(-1)capacity is obtained after 6000 cycles at 5.0 A g^(-1),showing signally improved sodium-ion storage properties.The storage mechanisms and kinetic behaviors are described systematically via the advanced testing techniques and density functional theory(DFT)calculations.It is found that the nitrogen-rich Mo_(x)N as the substrate is the basis of long cycling stability,and the few-layered MoSe_(2) are the key to improving actual capacity.This work indicates that the decoration of few-layered selenides has a broad application prospect in high-performance metal-ion batteries. | Tao Lu Baoquan Liu Fanyan Zeng Guo Cheng Shile Chu Meilan Xie Zhi Chen Zhaohui Hou | 2022 | Journal of Energy Chemistry2022，31，11： | 0 |
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