吴宁宁,宋文娥,安富强,刘建红,田文怀

• 1:北京科技大学材料科学与工程学院
• 2:中信国安盟固利动力科技有限公司

摘要(Abstract)：

用固相法合成了Al掺杂的高电压LiNi0.5Mn1.5-xAlxO4材料,研究了材料晶胞参数、材料可逆比容量、放电电压及循环性能随掺Al量的变化规律。结果表明,随着掺Al量的增加,材料的可逆比容量在逐渐减小;当Al掺杂量为0.06(LiNi0.5Mn1.44Al0.06O4)时,样品具有最佳的循环性能,100周的容量保持率在97%左右。与此同时,使用以Al掺杂量为0.06的样品为正极,石墨为负极组装的全电池显示了良好的循环性能。

关键词(KeyWords)： 固相法;放电电压;Al掺杂量;可逆比容量

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划(863计划)(2011AA11A230)

作者(Author): 吴宁宁,宋文娥,安富强,刘建红,田文怀

DOI: 10.13289/j.issn.1009-6264.2012.04.002

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