Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (03): 520-526.doi: 10.3866/PKU.WHXB20080330

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Investigation of Chlor-Alkali Electrolysis Intensified by Super Gravity

WANG Ming-Yong; XING Hai-Qing; WANG Zhi; GUO Zhan-Cheng   

  1. State Key Laboratory ofMutiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, P. R. China; Key Laboratory of Ecological & Recycle Metallurgy, Ministry of Education, University of Science and Technology Beijing, Beijing 100083, P. R. China; 3Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2007-10-31 Revised:2007-12-10 Published:2008-03-10
  • Contact: GUO Zhan-Cheng

Abstract: The super gravity field was applied to chlor-alkali electrolysis. The effects of super gravity on hydrogen evolution reaction (HER) and chlorine evolution reaction (CER) were investigated by linear sweep voltammetry, chronoamperometry and electrochemical impedance spectroscopy (EIS). The relationship between the cell voltages and gravity coefficient was studied. The results indicated that, the gas evolution reactions were intensified by super gravity and gas product was easier to spillover fromsolution. The solution resistance would reduce with the increase of gravity coefficient. The cell voltages also decreased with the increase of gravity coefficient, and the higher the current density, the larger the degree of cell voltage reduction.

Key words: Super gravity, Chlor-alkali electrolysis, Hydrogen evolution reaction, Ohmic resistance