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片状与颗粒状CoMn2O4电极材料的制备及电化学性能
作者:李明伟1 刘嗣哲2 王永刚1 杨绍斌1 
单位:(1. 辽宁工程技术大学材料科学与工程学院 辽宁 阜新123000 2. 辽宁工程技术大学机械工程学院 辽宁 阜新123000) 
关键词:锰酸钴 不同溶剂 电化学性能 超级电容器 
分类号:TU528
出版年,卷(期):页码:2019,47(9):0-0
DOI:
摘要:

 分别以纯水、50% (体积分数,下同)纯水与50%乙醇混合溶液、乙醇为溶剂制备了CoMn2O4纳米电极材料,研究了溶剂对CoMn2O4材料形貌、微观结构及电化学性能的影响。结果表明:采用纯水为溶剂制备的CoMn2O4材料具有片状结构,在电流密度为1 A/g时,比电容为446 F/g,在电流密度为5 A/g条件下,1 000次充放电循环后电容保持率为77%;50%纯水加50%乙醇为溶剂制备的CoMn2O4材料具有颗粒与片状混合结构,在电流密度为1 A/g时,比电容为684 F/g,在电流密度为5 A/g条件下,1 000次充放电循环后电容保持率为81%;采用乙醇为溶剂制备CoMn2O4材料具有颗粒状多孔结构,在电流密度1 A/g条件下,比电容为850 F/g,在电流密度为5 A/g条件下,1 000次充放电循环后电容保持率达86%,乙醇为溶剂制备的颗粒状多孔的CoMn2O4材料表现出更为优异的超电容性能。

基金项目:
国家自然科学基金(51274119)。
作者简介:
参考文献:

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