两种形貌的高储电性能ZnCo2O4电极材料
Two morphologies of ZnCo2 O4 electrode materials with high electrical storage properties
李少琪 1陈婷婷1
作者信息
- 1. 哈尔滨师范大学光电带隙教育部重点实验室,黑龙江 哈尔滨 150025;哈尔滨师范大学物理与电子工程学院,黑龙江 哈尔滨 150025
- 折叠
摘要
由于 ZnCo2O4 具有合成方法简单、成本低廉等优点,成为超级电容器领域的一种重要电极材料.通过水热、退火两步处理,制备了两种不同形貌的 ZnCo2O4 材料,并在三电极体系中测试其超级电容器性能.结果表明,花状形貌的ZnCo2O4纳米片微球比纳米片状ZnCo2O4的性能更好.电流密度1 A·g-1时,ZnCo2O4纳米片微球电极的比电容高达3 005.0 F·g-1;电流密度20 A·g-1时,比电容仍能保持2 150.0 F·g-1,电容保持率为71.5%.循环充/放电10 000次后,电容保持率仍达到 93.8%.该ZnCo2O4纳米片微球电极材料在超级电容器电极领域具有良好的应用前景.
Abstract
ZnCo2O4 has become an important electrode material in the field of supercapacitors due to its simple synthesis method and low cost.Prepared two different morphologies of ZnCo2O4 materials through two steps of hydrothermal and annealing treatment,and tested their supercapacitor performance in a three-electrode system.The results showed that the performance of ZnCo2O4 electrode with flower shaped nanosheet microsphere morphology is better than that of ZnCo2O4 electrode with nanosheet morphology.At a current density of 1 A·g-1,the specific capacitance of the ZnCo2O4 nanosheet microsphere electrode is as high as 3 005.0 F·g-1.At a current density of 20 A·g-1,the specific capacitance can still be maintained at 2 150.0 F·g-1,with a capacitance retention rate of 71.5%.After 10 000 cycles of charging/discharging,the capacitance retention rate still reaches 93.8%.The ZnCo2O4 nanosheet microsphere electrode material has good application prospects in the field of supercapacitor electrodes.
关键词
二元过渡金属氧化物/钴酸锌/超级电容器/纳米片微球Key words
binary transition metal oxide/ZnCo2O4/supercapacitor/nanosheet microspheres引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据