Effect of Different Species of Cobalt Additive on Performance of Nickel Hydroxide Electrode

Authors

Xian-xia YUAN, Chem. Dept., State Key Lab. For the Phys. Chem. of the Solid Surf., Insti. Phys. Chem.,Xiamen Univ., Xiamen 361005, China;
Yin-dong WANG, Dept.of Chem.Engin.,Harbin Engin.Univ.,Harbin,150001,China;
Feng ZHAN, General Res. Inst.for non_ferrous Metals,Beijing,100;

Abstract

Performances of nickel electrodes when adding or without adding Cobalt in different forms were studied, the results were interpreted by cyclic voltammetry(CV)and electrochemical impedance spectroscope(EIS). It was demonstrated that the additions of Co,CoO,CoO+Co by mechanically mixing with Ni(OH) 2 all can improve the performance of nickel electrode to some extent,and when Co is added in the form of CoO the best performance can be obtained. This can be mainly attributed to the fact that three kinds of Co additives all improved the structure of nickel hydroxide and the ability of H + in electrolyte transporting through the material,hence the reversibility of nickel electrode and the oxygen evolution potential are increased. These improved the charging efficiency of nickel electrode, accordingly, improved the performance of nickel electrode.

DOI Link

https://doi.org/10.61558/2993-074X.3210

Publication Date

2000-02-28

Online Available Date

2000-02-28

Revised Date

2000-02-28

Received Date

2000-02-28

Recommended Citation

Xian-xia YUAN, Yin-dong WANG, Feng ZHAN. Effect of Different Species of Cobalt Additive on Performance of Nickel Hydroxide Electrode[J]. Journal of Electrochemistry, 2000 , 6(1): Article 12.
DOI: 10.61558/2993-074X.3210
Available at: https://jelectrochem.xmu.edu.cn/journal/vol6/iss1/12

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