期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 44, 页码 24419-24429出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b03036
关键词
Ni-Co binary oxide; chemical bath deposition; amorphous defects; porous structure; synergistic effect
资金
- National Natural Science Foundation of China [21201065, 21371061]
- Key Program of Science Technology Innovation Foundation of the Universities of Guangdong Province [cxzd1113]
A simple and outstanding approach is provided to fabricate amorphous structure Ni-Co binary oxide as supercapacitors electrode materials. We can easily obtain porous Ni-Co oxides composite materials via chemical bath deposition and subsequent calcination without any template or complicate operation procedures. The amorphous porous Ni-Co binary oxide exhibits brilliant electrochemical performance: first, the peculiar porous structure can effectively transport electrolytes and shorten the ion diffusion path; second, binary composition and amorphous character introduce more surface defects for redox reactions. It shows a high specific capacitance up to 1607 F g(-1) and can be cycled for 2000 cycles with 91% capacitance retention. In addition, the asymmetric supercapacitor delivers superior energy density of 28 W h kg(-1), and the maximum power density of 3064 W kg(-1) with a high energy density of 10 W h kg(-1).
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