期刊
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
卷 14, 期 1, 页码 764-776出版社
ESG
DOI: 10.20964/2019.01.43
关键词
Supercapacitor; ZIF-8; CoO; NiO; graphitic; Nanocomposite
资金
- GUET excellent graduate thesis program [16YJPYSS30]
- NSFC [51861004, 51561006, U1501242]
- GXNSF [2016GXNSFFA380012, AD17195073, 2017GXNSFDA198018]
Doping porous carbon with transition metal oxides is highly desirable for high performance supercapacitors due to their synergistic effect. Herein, a highly dispersed CoO-NiO nanoparticle doped porous carbon (CoO-NiO@ZIF-C) was prepared by pyrolysis of Ni2+ and Co2+ ions impregnated ZIF-8. The metal nanoparticles catalyze the formation of graphitic carbon, while the N-doped carbon substrate confines the nanoparticles during the process. The resulted nanocomposite demonstrates excellent capacitive performance, which delivered a specific capacitance of 552.3 F g(-1) at current density of 1 A g(-1). Moreover, an asymmetric supercapacitor was successfully assembled using CoO-NiO@ZIF-C as positive electrode and reduced graphene oxide as the negative electrode. The two-electrode cell delivered a maximum energy density of 43.5 Wh kg(-1) at a power density of 1892.1 W kg(-1) with good stability.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据