Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (2): 374-378.doi: 10.1007/s40242-013-2261-1

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Effects of Sodium Sulfate as Electrolyte Additive on Electrochemical Performance of Lead Electrode

YU Jin-yu, QIAN Zhao-hong, ZHAO Meng, WANG Yu-jie, NIU Lin   

  1. Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
  • Received:2012-07-04 Revised:2012-11-03 Online:2013-04-01 Published:2013-03-20
  • Supported by:

    Supported by the National Basic Research Program of China(No.2009CB930103) and the Natural Science Foundation of Shandong Province, China(No.2009ZRB01965).

Abstract:

Sodium sulfate as an electrolyte additive was studied via electrochemical methods including linear sweep voltammetry(LSV), cyclic voltammetry(CV) and electrochemical impedance spectroscopy(EIS) to deeply understand its effect on the hydrogen evolution current and overpotential as well as the formation and structure of anodic passivation films on lead surface during the redox processes. The results achieved will be valuable to improve the cycle life and maintenance-free properties of lead-acid batteries.

Key words: Electrolyte additive, Sodium sulfate, Lead electrode, Hydrogen evolution reaction, Anodic film