棒状δ-MnO2电极材料制备及其在水系电池中的应用
Preparation of rod δ-MnO2 electrode material and its application in water cell
韩洋 1樊姗 1严宇琪 1樊鹏阳 1郑晓英 1戴勤进 1徐健1
作者信息
- 1. 齐齐哈尔大学材料科学与工程学院,黑龙江齐齐哈尔 161006
- 折叠
摘要
采用简单的一步水热合成法制备棒状δ-MnO2电极材料.利用X射线衍射、X射线光电子能谱和扫描电子显微镜对所制得样品进行结构表征,并将其组装成水系锌离子电池进行测试.通过循环伏安法、恒电流充放电测试研究电化学性能.结果表明,棒状δ-MnO2电极材料在电流密度为0.1 A/g时放电容量达到194.6 mAh/g.经过倍率性能测试后,容量保持率达到95.4％,显示出较好的稳定性.
Abstract
The rod-like δ-MnO2 electrode material was prepared by a simple one-step hydrothermal synthesis method.The samples were characterized by XRD,XPS and SEM,and then assembled into water zinc-ion batteries for testing.The electrochemical properties were studied by CV and GCD.The test results showed that the rod-likeδ-MnO2 electrode material had a discharge capacity of 194.6 mAh/g when the current density was 0.1 A/g.The capacity retention rate of δ-MnO2 was 95.4％,and the results showed that δ-MniO2 had good stability.
关键词
水热法/δ-MnO2/氧缺陷/水系锌离子电池Key words
hydrothermal method/δ-MnO2/oxygen vacancy/aqueous zinc-ion battery引用本文复制引用
基金项目
齐齐哈尔大学研究生创新科研项目(YJSCX2022028)
出版年
2024
NETL
NSTL
万方数据