Increased capacitance of porous Co0.5Ni0.5Fe2O4 for supercapacitor application

被引：13
作者：
Lin, Ying [1 ]
Wang, Jingjing [1 ]
Yang, Haibo [1 ]
Wang, Lei [1 ]
Cao, Minjuan [1 ]
机构：
[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Shaanxi, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2018年 / 228卷
基金：
中国国家自然科学基金;
关键词：
Porous materials; Excellent cycling stability; Supercapacitor; Electrochemical energy storage; HIGH-PERFORMANCE SUPERCAPACITORS; NI-DOPED COFE2O4; ELECTROCHEMICAL CAPACITORS; ELECTRODE MATERIALS; INVERSE OPAL; NANOCOMPOSITES; NANOPARTICLES; COMPOSITES; BEHAVIOR;
D O I：
10.1016/j.mseb.2017.11.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A now type of porous Co0.5Ni0.5Fe2O4 has been successfully fabricated via a simple template-assistant method followed by a post-calcining treatment. The as-prepared samples were characterized by scanning electron microscope (SEM), Brunauere-Emmette-Teller (BET) surface analyzer, X-ray diffraction (XRD) and Raman spectra. The as-prepared Co0.5Ni0.5Fe2O4 displays a nano-porous structure with the porous diameter of 45-140 nm. The porous Co0.5Ni0.5Fe2O4 sample exhibits excellent electrochemical performances, including the specific capacitance of 113 F g(-1) at a scan rate of 5 mV s(-1) in 1 M KOH aqueous electrolytes. In addition, the porous Co0.5Ni0.5Fe2O4 sample possesses an excellent cycling stability by 120.05% growth of its specific capacitance after 1000 cycles. The faradic-redox activity of porous Co0.5Ni0.5Fe2O4 sample results in the high specific capacitance and excellent cycling stability. Thus, the porous Co0.5Ni0.5Fe2O4 sample is a promising pseudocapacitive material for supercapacitors.
引用
收藏
页码：103 / 108
页数：6
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