纳米针
超级电容器
材料科学
功率密度
电极
电流密度
磷化物
电化学
化学工程
活性炭
比表面积
假电容器
电容
电解质
析氧
纳米技术
纳米棒
介电谱
兴奋剂
化学
金属
催化作用
纳米结构
冶金
吸附
有机化学
功率(物理)
物理化学
工程类
物理
量子力学
作者
Jianan Liu,Xiaoyang Deng,Shuang Zhu,Naiqin Zhao,Junwei Sha,Liying Ma,Fang He
标识
DOI:10.1016/j.electacta.2020.137528
摘要
The preparation of electrode materials with high performance is of great significance to the practical application of supercapacitors. Here, O-doped NiCoP (ONiCoP) electrode material with porous nanoneedle structure was synthesized in-situ on carbon cloth by hydrothermal process and subsequent phosphorization treatment with high mass loading of 5.07 mg cm−2. The electrode combined the large specific surface area of porous nanoneedle, the high electronic conductivity of phosphide and the electronic structure regulation of oxygen element, which finally showed excellent electrochemical performance. The optimized ONiCoP electrode delivered a high specific area capacity of 3457 mC cm−2 at a current density of 1 mA cm−2 and a high specific mass capacity of 621 C g−1 at a current density of 1 A g−1. The hybrid supercapacitor composed of ONiCoP positive electrode and commercial activated carbon negative electrode exhibited a high energy density of 30.52 Wh kg−1 at a power density of 749.36 W kg−1.
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