金属有机框架衍生的Co3O4 电极材料及其电化学性能

doi:10.19799/j.cnki.2095-4239.2021.0585

储能科学与技术 ›› 2022, Vol. 11 ›› Issue (3): 1035-1043.doi: 10.19799/j.cnki.2095-4239.2021.0585

• 储能新材料设计与先进表征专刊 • 上一篇下一篇

金属有机框架衍生的Co₃O₄ 电极材料及其电化学性能

佟永丽^1,²(), 武祥¹()

^1.沈阳工业大学材料与工程学院，辽宁沈阳 110870
^2.沈阳理工大学理学院，辽宁沈阳 110159

收稿日期:2021-11-06 修回日期:2021-11-16 出版日期:2022-03-05 发布日期:2022-03-11
通讯作者: 武祥 E-mail:438286785@qq.com;wuxiang05@163.com
作者简介:佟永丽（1978—），女，博士，讲师，研究方向为超级电容器，E-mail：438286785@qq.com；
基金资助:
国家自然科学基金项目(52172218)

Electrochemical performance of Co₃O₄ electrode materials derived from Co metal-organic framework

Yongli TONG^1,²(), Xiang WU¹()

^1.School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, China
^2.School of Science, Shenyang Ligong University, Shenyang 110159, Liaoning, China

Received:2021-11-06 Revised:2021-11-16 Online:2022-03-05 Published:2022-03-11
Contact: Xiang WU E-mail:438286785@qq.com;wuxiang05@163.com

摘要/Abstract

摘要：

超级电容器作为一种绿色储能器件，因其具有较大的功率密度、价格低廉、绿色环保等特征而备受关注。电极材料、电解液和隔膜都会影响超级电容器的电化学性能，其中电极材料是关键因素。因此，如何制备高性能的电极材料是人们研究的重要课题之一。本工作通过方便的水热合成方法制备了金属有机框架结构衍生的Co₃O₄纳米叶结构。所制备的产物呈现多孔蓬松结构。通过优化溶液浓度和反应时间，研究了Co₃O₄样品的生长机理。三电极电化学性能测试表明：反应时间为4 h时，样品的电化学性能最好。在电流密度为0.5 A/g时，其容量可达到156 F/g。经过6000圈循环后，其80%的初始容量能够被保留。组装器件在能量密度为157.5 W·h/kg时，其功率密度可达到22.5 W/kg。经过8000圈循环测试后，器件比容量保持率为83%。本研究通过模板诱导制备的电极材料为超级电容器的应用研究提供了理论依据。

关键词: 金属有机框架, 超级电容器, 电化学性能, 功率密度

Abstract:

As a green energy storage device, supercapacitors have attracted much attention due to their high power density, low cost, and excellent environmental protection compared to secondary energy storage batteries. Electrode materials, electrolytes, and diaphragms affect the electrochemical performance of supercapacitors. Herein, we synthesize Co₃O₄ nanoleaves derived from metal-organic framework structure by a simple hydrothermal route. The prepared product shows a porous structure. By optimizing the solution concentration and reaction time, the electrode material delivers a specific capacitance of 156 F·g^-1 at a current density of 0.5 A·g^-1. After 6000 cycles, the device retained 80% of the initial capacity. An assembled device delivers a power density of 22.5 W·kg^-1 at an energy density of 157.5 W·h·kg^-1. Even after 8000 cycles, it still possesses an excellent specific capacity.

Key words: MOF, supercapacitor, electrochemical performance, power density

中图分类号:

O 646.542

佟永丽, 武祥. 金属有机框架衍生的Co₃O₄ 电极材料及其电化学性能[J]. 储能科学与技术, 2022, 11(3): 1035-1043.

Yongli TONG, Xiang WU. Electrochemical performance of Co₃O₄ electrode materials derived from Co metal-organic framework[J]. Energy Storage Science and Technology, 2022, 11(3): 1035-1043.

图/表 5

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金属有机框架衍生的Co₃O₄ 电极材料及其电化学性能

Electrochemical performance of Co₃O₄ electrode materials derived from Co metal-organic framework

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