张庆印,季梦鸽,刘小露,时志强

• 1:天津工业大学天津市先进纤维与储能技术重点实验室
• 2:天津工业大学化学工程与技术学院
• 3:天津工业大学材料科学与工程学院

摘要(Abstract)：

为了提高双金属氧化物电极材料的电化学性能和循环稳定性，通过简单省时的溶剂热煅烧法制得多孔铁钴双金属氧化物（Fe_xCo_yO_4）纳米球，并探究加入不同比例的铁钴对电化学性能的影响；通过XRD、SEM和XPS对所得的电极材料进行表征，利用电化学工作站和蓝电电池测试系统等进行电化学性能测试。结果表明：多孔的双金属氧化物纳米球可以有效地提高超级电容器的电化学性能，同时还具有超长的循环寿命；当加入的铁钴比例为1∶1时，所制备的FeCoO_4多孔纳米球电极表现出最大比电容596 F/g；将电极材料组装为对称超级电容器，测试其循环稳定性，在3 A/g的电流密度下循环20 000圈后，其容量保持率可增加至120%。

关键词(KeyWords)： 对称超级电容器;双金属氧化物;多孔纳米球;电极材料

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目（21476172）

作者(Author): 张庆印,季梦鸽,刘小露,时志强

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