CoO@CuO电极材料制备及超级电容性能研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (1): 317-322.

所属专题：新型功能材料

CoO@CuO电极材料制备及超级电容性能研究

吴童, 古庆玉, 王培鉴, 刘忠品, 孙海滨

山东理工大学材料科学与工程学院,淄博 255000

收稿日期:2020-08-19 修回日期:2020-09-25 出版日期:2021-01-15 发布日期:2021-02-07
通讯作者: 孙海滨,博士,副教授。E-mail:hbsun@sdut.edu.cn
作者简介:吴童(1996—),男,硕士研究生。主要从事能源材料方面的研究。E-mail:812042275@qq.com
基金资助:
国家自然科学基金(51702189);山东省高校科研计划(J18KA002)

Preparation and Supercapacitor Performance of CoO@CuOElectrode Materials

WU Tong, GU Qingyu, WANG Peijian, LIU Zhongpin, SUN Haibin

School of Materials Science and Engineering,Shandong University of Technology,Zibo 255000,China

Received:2020-08-19 Revised:2020-09-25 Online:2021-01-15 Published:2021-02-07

摘要/Abstract

摘要： 超级电容器因具有功率密度高、充放电速率快、循环使用寿命长等优点而备受关注。CoO是一种优良的超级电容电极材料,理论比容量可以达到4 292 F·g^-1,但其电导率较低,而且充放电过程中会产生体积膨胀,导致其实际比容量低于理论比容量。为此,本文首先采用热氧化法在泡沫铜导电集流体上生长CuO纳米线阵列,然后采用化学浴沉积法在CuO纳米线表面沉积CoO层级结构,制备核壳结构CoO@CuO电极材料。该电极材料在电流密度为2 mA·cm^-2时的比容量可达到1.043 0 F·cm^-2(117.145 3 F·g^-1),并表现出了良好的电容保持率。

关键词: 电容性能, 氧化铜, 氧化钴, 纳米线阵列, 超级电容器, 电极材料, 核壳结构

Abstract: Supercapacitors have attracted attentions due to many advantages,such as ultra-high power density,fast and stable charge/discharge rate,long cycle life and so on.CoO is regarded as a promising electrode of supercapacitor,the theoretical specific capacity reaches 4 292 F·g^-1,but its low conductivity and volume expansion during charge/discharge process lead to very low actual specific capacity than the theoretical specific capacity.In order to solve these problems,CuO nanowire arrays were firstly grown on copper foams via the thermal oxidation method.And then,hierarchical CoO was successfully deposited on CuO nanowires by chemical bath deposition,thus,core-shell CoO@CuO electrode materials were obtained.This electrode materials have an excellent specific capacity of 1.043 0 F·cm^-2 (117.145 3 F·g^-1) at the current density of 2 mA·cm^-2,as well as a good capacitance retention rate,which increase the number of surface active sites,reduce the effect of CoO volume expansion.

Key words: capacitance property, copper oxide, cobalt oxide, nanowire array, supercapacitor, electrode material, core-shell structure

中图分类号:

TM53

吴童, 古庆玉, 王培鉴, 刘忠品, 孙海滨. CoO@CuO电极材料制备及超级电容性能研究[J]. 硅酸盐通报, 2021, 40(1): 317-322.

WU Tong, GU Qingyu, WANG Peijian, LIU Zhongpin, SUN Haibin. Preparation and Supercapacitor Performance of CoO@CuOElectrode Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(1): 317-322.

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CoO@CuO电极材料制备及超级电容性能研究

Preparation and Supercapacitor Performance of CoO@CuOElectrode Materials

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