| 纳米碳纤维-硫正极电化学性能 |
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| 引用本文： | 赵春荣,余仲宝,王维坤,杨裕生.纳米碳纤维-硫正极电化学性能[J].电化学,2009,15(1):88. |
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| 作者姓名： | 赵春荣 余仲宝 王维坤 杨裕生 |
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| 作者单位： | 北京科技大学冶金与生态工程学院;防化研究院第一研究所; |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 应用恒流充放电、循环伏安、交流阻抗等测试方法,研究了不同比例的纳米碳纤维(NCF)对硫正极电化学性能的影响.结果表明,NCF-硫正极的倍率放电性能和循环伏安性能都有了一定的提高,添加量为3%和5%时效果较好.3%NCF-硫正极电流密度0.4 mA.cm-2时,比容量达880 mAh.g-1,20次循环后,比容量仍保持630 mAh.g-1.
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| 关 键 词： | 纳米碳纤维 导电添加剂 锂-硫电池 电化学性能 |
| 收稿时间： | 2009-02-28 |
The Electrochemical Performance of NCF-sulfur Cathode |
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| ZHAO Chun-rong,YU Zhong-bao,WANG Wei-kun,YANG Yu-sheng.The Electrochemical Performance of NCF-sulfur Cathode[J].Electrochemistry,2009,15(1):88. |
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| Authors: | ZHAO Chun-rong YU Zhong-bao WANG Wei-kun YANG Yu-sheng |
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| Institution: | 1.School of Metallurgical and Ecological Engineering;Beijing University of Science and Technology;Beijing 100083;China;2.Research Institute of Chemical Defense;Beijing 100191;China |
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| Abstract: | The electrochemical performance of NCF-sulfur cathode,with different NCF contents,was investigated by constant current discharge,cyclic voltammetry and AC impedance methods.The morphologies of the cathodes were observed using scanning electron microscopy.The results indicate that the cycle life and rate capability of NCF-sulfur cathode increased.Better performance of sulfur cathode was obtained by 3% and 5% NCF conductive addition.When the current density was 0.4 mA/cm2,the 3%NCF-sulfur cathode had an initi... |
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| Keywords: | nanometer carbon fibre conducting additives lithium-sulfur batteries electrochemical performance |
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