期刊文献+

硫含量和集流体类型对锂硫电池性能的影响 被引量:9

Effect of sulfur content and type of collector on performance of Li/S battery
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摘要 采用高导电性石墨KS6作为单质硫的载体,热处理制得高硫含量(>60%)的S/KS6复合材料,对比了平面集流体、三维集流体制备的硫电极对电池循环性能的影响。用XRD、循环伏安、交流阻抗和恒流充放电测试,对复合材料进行了分析。采用硫碳质量比2∶1的S/KS6复合材料和三维集流体的锂硫电池,具有较高的容量和较好的循环稳定性,以0.05 C在1.5~2.5 V充放电,第30次循环的放电容量仍有首次循环的83.6%。 High sulfur content( 〉60% )S/KS6 composite for lithium-sulfur(Li/S) battery was synthesized by heat treatment with high electric conduction KS6 graphite as carrier of element sulfur. The effects of sulfur electrode using plane current collector,three- dimension current collector on cycle performance of battery were compared. The composite was analyzed by XRD, cyclic voltamme- try, electrochemical impedance spectroscopy and galvanostatic charge-discharge tests. Li/S battery using S/KS6 composite with sul- fur-carbon mass ratio of 2:1 and three-dimension current collector had higher capacity and better cycle stability ,when charged-discharged in 1.5 -2.5 V with 0. 05 C,its discharge capacity in the 30th cycle was 83.6% of the initial cycle.
机构地区 国营
出处 《电池》 CAS CSCD 北大核心 2013年第3期151-154,共4页 Battery Bimonthly
关键词 单质硫 石墨KS6 集流体 锂硫电池 循环稳定性 element sulfur KS6 graphite current collector lithium-sulfur(Li/S) battery cycle stability
作者简介 王雪丽(1985-),女,河南人,国营3401厂助理工程师,研究方向:化学电源,本文联系人; 魏俊华(1961-),男,贵州人,国营3401厂研究员,研究方向:化学电源; 王庆杰(1970-),男,山东人,国营3401厂研究员,研究方向:化学电源: 林甘红(1978-),女,重庆人,国营3401厂高级工程师,研究方向:化学电源。
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参考文献10

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二级参考文献29

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同被引文献43

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