Abstract
The chemical cobalt plating method is used to treat on the hydrogen storage alloys.Effect of the surface treatment on the electrochemical performance of MH eletrodes was investigated by carrying out experimental methods of CV,AC and charge/discharge cycle tests. The results showed that after microencapsulation with cobalt, the impedance of electrochemical reaction on the surface and polarization during chare/discharge process was markedly decreased; and the electrocatalytic activity on the surface, discharge capacity,charge efficiency was improved. It was also indicated that the anode reaction of MH electrode treated was controlled by diffusion process.
Keywords
Hydrogen strage alloys, Chemical cobalt microencapsulating, Electrochemical impedance spectra, Cyclic voltammetry
Publication Date
2004-05-28
Online Available Date
2004-05-28
Revised Date
2004-05-28
Received Date
2004-05-28
Recommended Citation
Tong-chi XIA, Sheng-li ZHANG, Shu-xin WANG, Kun HUANG, Wen-zeng TIAN.
Study on Electrochemical Performance of Electroless Cobalt Coating for Microencapsution of Hydrogen Storage Alloys[J]. Journal of Electrochemistry,
2004
,
10(2): Article 20.
DOI: 10.61558/2993-074X.3323
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol10/iss2/20
References
[1] YuCheng zhou,LaiWei hua.CurrentstiuationanddevelopmentdirectionofMH/Nibattery[J].Battery,2001,31(2):58.
[2] BalsS.Haran,BrankoNP,RalphEW.Studiesonelectrolesscobaltcoatingsformicroencapsulationofhydrogenstoragealloys[J].J.Electrochem.Soc.1998,145(9):3000.
[3] XiaXi.ThefiftyyearsofchemicalpowersourcesinChina(Ш)[J].BatteryBimonthly,2000.30(5):192.
[4] ChenWen xiang,ChenYun,PanHong geetal.Surfacefreatmentsofhydrogenstoragealloycharge dischargeperformancesofNi/MHbattery[J].ActaPhysico chimicaSinica,1998.14(8):742.
[5] Sunchun men,GuoHe tong,TangZhi yuan.Surfacetrestmentofhydrogenstoragealloys[J].ChineseRareEarths,1999,20(8):57.
[6] ChenWei xiang.Strudyoncyclicvoltammetryandelectrochemicalimpedanceofhydrogenstoragealloyelectrode[J].ChineseJournalofPowerSources,2000,24(4):200.
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons
