| 锂硫电池硫膨胀石墨正极材料的电化学性能 |
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| 引用本文： | 苑克国,王维坤,余仲宝,王安邦.锂硫电池硫膨胀石墨正极材料的电化学性能[J].电化学,2009,15(2):202. |
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| 作者姓名： | 苑克国 王维坤 余仲宝 王安邦 |
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| 作者单位： | 防化研究院; |
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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： | 应用高温气相扩散沉积法由单质硫制备硫膨胀石墨.该硫膨胀石墨正极可降低反应界面电荷传递阻抗,提高扩散阻抗抑制单质硫或多硫化物在充放电过程的穿梭.其首次放电容量达到972 mAh.g-1,容量保持率为78%,循环效率在80%以上.
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| 关 键 词： | 锂硫电池 正极材料 含硫膨胀石墨 单质硫 电化学性能 |
| 收稿时间： | 2009-05-28 |
Electrochemical Performance of the Exfoliated Graphite Containing Sulfur Cathode Material for Lithium Sulfur Battery |
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| YUAN Ke-guo,WANG Wei-kun,YU Zhong-bao,WANG An-bang.Electrochemical Performance of the Exfoliated Graphite Containing Sulfur Cathode Material for Lithium Sulfur Battery[J].Electrochemistry,2009,15(2):202. |
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| Authors: | YUAN Ke-guo WANG Wei-kun YU Zhong-bao WANG An-bang |
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| Institution: | Institute of Chemical Defense;Beijing 100191;China |
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| Abstract: | The exfoliated graphite containing sulfur cathode material was prepared by the high temperature sulfur gas diffusion adsorption method.This cathode material could obtain an initial discharge specific capacity 972 mAh·g-1,capacity retention ratio 78% and cycling efficiency above 80%,respectively.The exfoliated graphite containing sulfur cathode could decrease the reaction interphase charge transfer impedance,and restrain the sulfur or polysulfide shuttle phenomenon during the charge-discharge process through improving the diffusion impedance. |
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| Keywords: | lithium sulfur battery cathode material exfoliated graphite containing sulfur sulfur electrochemical performance |
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