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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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金属氢化物tih2的储锂特性
DOI: 10.3969/j.issn.1671-7627.2014.03.002, PP. 7-11
Keywords: 球磨,碳包覆,tih2/c电极,循环稳定性
Abstract:
采用机械球磨对tih2金属氢化物进行处理,通过x线衍射(xrd)和扫描电子显微镜(sem)研究不同球磨时间的tih2粉末的微观结构和形貌,并结合充放电测试进一步探究碳包覆tih2的储锂特性。结果表明:球磨使tih2粉末颗粒的尺寸明显减小,经碳包覆后tih2电极的电化学反应活性明显提高。当球磨时间达到9h时,tih2/c电极的电化学性能最好,其首次放电容量高达1226.9ma·h/g,从第2次循环开始表现良好的循环稳定性,其50次循环后的容量保持率高达72.9%。50次循环后放电容量为222.5ma·h/g,比未球磨的放电容量多60.7ma·h/g。
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