新型炭材料2020，Vol.35Issue(2)：112-120,9.DOI:10.1016/S1872-5805(20)60478-4
氧化镍/四氧化三钴@镍钴与活性炭的非对称超级电容器的制备
An asymmetric supercapacitor based on a NiO/Co3O4@NiCo cathode and an activated carbon anode
摘要
Abstract
Pseudocapacitive metal oxide active materials are promising for use in high performance supercapacitors.However,their poor electrical conductivity greatly hinders their practical application.We formed NiO and Co3O4 active materials on the surface of a highly conductive NiCo nanowire membrane current collector by a simple air oxidation method to fabricate a self-supported flexible NiO/Co3O4@NiCo electrode.This significantly improves electron transport at the interface between the current collector and the active NiO/Co3O4.Furthermore,the reticular nanowire network facilitates ion transportation and releases strain caused during charge and discharge.Due to this unique structural characteristic,the NiO/Co3O4@NiCo electrode delivers a high specific capacitance of 1.36 F cm-2 at a current density of 5 mA cm-2,and excellent cycling stability with a capacitance retention of 96.95％ after 10 000 cycles.An asymmetric supercapacitor was assembled using the NiO/Co3O4@NiCo as the cathode and an activated carbon electrode as the anode,which delivered an energy density of 0.32 mWh cm-2 at a power density of 8 mW cm-2.Even at a high power density of 40 mW cm-2,an energy density of 0.17 mWh cm2 was achieved,suggesting its promising use as an efficient electrode for high performance supercapacitors.关键词
氧化镍/四氧化三钴/活性炭/一体化电极/非对称超级电容器Key words
Nickel oxide/Cobalt oxide/Activated carbon/Integrated electrode/Asymmetric supercapacitor分类
通用工业技术引用本文复制引用
李婧,邹培超,姚文涛,刘鹏,康飞宇,杨诚..氧化镍/四氧化三钴@镍钴与活性炭的非对称超级电容器的制备[J].新型炭材料,2020,35(2):112-120,9.基金项目
珠江人才本土创新团队(2017BT01N111) （2017BT01N111）
广东省创新团队(51578310) （51578310）
广东省科技厅(2015A030306010) （2015A030306010）
深圳市科创委(JCYJ20170412171720306).Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01N111) （JCYJ20170412171720306）
Shenzhen Geim Graphene Center,the National Nature Science Foundation of China (51578310) （51578310）
Guangdong Province Science and Technology Department (2015A030306010) （2015A030306010）
Shenzhen Government (JCYJ20170412171720306). （JCYJ20170412171720306）
