| 以氨基化的聚苯乙烯微球为模板制备电致变色性能优良的单层有序多孔PBTB薄膜 |
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| 引用本文： | 张晴晴,李容,张萌萌,苟兴龙.以氨基化的聚苯乙烯微球为模板制备电致变色性能优良的单层有序多孔PBTB薄膜[J].物理化学学报,2015,30(3):476-482. |
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| 作者姓名： | 张晴晴 李容 张萌萌 苟兴龙 |
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| 作者单位： | 1. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China;
2. Zhejiang Institute of Quality Inspection Science, Hangzhou 310018, P. R. China |
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| 基金项目： | 国家自然科学基金(51071131)和教育部新世纪优秀人才计划(NCET-10-0890)项目资助 |
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| 摘 要： | 以氯化钨和氧化石墨烯(GO)为原料，乙醇为溶剂，一步合成了WO3纳米棒/石墨烯纳米复合材料(WO3/RGO). 将WO3/RGO纳米复合材料用于锂离子电池负极，并通过充放电测试、循环伏安(CV)和电化学阻抗谱(EIS)技术综合考察了该材料的储锂性能. 结果显示，在0.1C (1C=638 mA·g-1)倍率下，复合物的首次放电比容量达到761.4 mAh·g-1，100次循环后可逆容量仍保持在635 mAh·g-1，保持率为83.4%. 即使在5C倍率下容量仍高达460 mAh·g-1. 由此说明，WO3/RGO纳米复合物具有优异的循环稳定性及倍率性能，可望用于高性能锂离子电池.
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| 关 键 词： | 电致变色 有序多孔结构 响应时间 离子扩散 电化学聚合 |
| 收稿时间： | 2013-08-06 |
| 修稿时间： | 2014-01-07 |
Synthesis and Electrochemical Lithium Storage Performance of WO3 Nanorods/Graphene Nanocomposites |
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| ZHANG Qing-Qing,LI Rong,ZHANG Meng-Meng,GOU Xing-Long.Synthesis and Electrochemical Lithium Storage Performance of WO3 Nanorods/Graphene Nanocomposites[J].Acta Physico-Chimica Sinica,2015,30(3):476-482. |
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| Authors: | ZHANG Qing-Qing LI Rong ZHANG Meng-Meng GOU Xing-Long |
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| Institution: | 1. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China;
2. Zhejiang Institute of Quality Inspection Science, Hangzhou 310018, P. R. China |
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| Abstract: | WO3 nanorods/graphene nanocomposites (WO3/RGO) were prepared by the solvothermal treatment of tungsten hexachloride and graphene oxide in alcohol. The electrochemical performance of WO3/RGO as anode materials for lithium-ion batteries was investigated by galvanostatic charge-discharge tests, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The discharge capacity of the composite at the first cycle was 761.4 mAh·g-1, and about 635 mAh·g-1 of reversible capacity remained after 100 cycles at a rate of 0.1C (1C=638 mA·g-1). The corresponding retention rate was 83.4%. The reversible capacity remained lager than 460 mAh·g-1 at a rate of 5C. WO3/RGO exhibited excellent cycling stability and rate performance, and has potential in advanced lithium-ion batteries. |
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| Keywords: | Tungsten trioxide Graphene Nanocomposite Lithium-ion battery Anode material |
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