Electrochemical Capacitive Performance of Mesoporous Carbon Based Co-Ni Oxides

Authors

Zhen-Sheng YANG, 1. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China;
Ling-Bin KONG, 2. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaFollow
Li DENG, 1. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China;
Yong-Chun LUO, 2. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Long KANG, 2. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China

Corresponding Author

Ling-Bin KONG(konglb@lut.cn)

Abstract

By using defects on the surface of CMK-3 served as nucleation center, Co0.25Ni0.75 oxide/C composite was successfully prepared through a simple chemical co-precipitation method. Characterization was carried by using X-ray diffraction, BET and scanning electron microscopy. Results showed that a perfect mesoporous network of interconnected nanoflakes was obtained for Co0.25Ni0.75 oxide/C composite and, this material has a less crystallization, interconnected nanoflakes network structure and a narrow mesoporous distribution at about 3~4 nm. The highly dispersed and loosely packed Co0.25Ni0.75 oxide/C composite possessed good electrochemical accessibility and fast diffusion rate of OH-. Cyclic voltammetry, charge–discharge curves suggested that the as-prepared Co0.25Ni0.75 oxide(92%) /C electrode is highly electrochemical activated and an admirable specific capacitance of as high as 1781 F/g could be obtained at current density of 5mA/cm2.

Graphical Abstract

Keywords

supercapacitor;, cobalt-nickel oxide;, interconnected nanoflakes network

DOI Link

https://doi.org/10.61558/2993-074X.2834

Publication Date

2011-05-28

Online Available Date

2011-05-05

Revised Date

2011-03-15

Received Date

2011-01-07

Recommended Citation

Zhen-Sheng YANG, Ling-Bin KONG, Li DENG, Yong-Chun LUO, Long KANG. Electrochemical Capacitive Performance of Mesoporous Carbon Based Co-Ni Oxides[J]. Journal of Electrochemistry, 2011 , 17(2): Article 19.
DOI: 10.61558/2993-074X.2834
Available at: https://jelectrochem.xmu.edu.cn/journal/vol17/iss2/19