An improved method of water electrolysis – effect of complexing agent

Journal of Electrochemical Science and Engineering

Seetharaman Swaminathan¹  Kaveripatnam Samban Dhathathreyan²  Ramya Krishnan²  Balaji Rengarajan²  Manickam Velan³ 

[1] Centre for Fuel Cell Technology, International Advanced research Centre for Powder Metallurgy and New Materials( ARCI), II Floor, IIT-M Research Park, No.6 Kanagam road, Taramani, Chennai – 600 113, and Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai-600 025;Centre for Fuel Cell Technology, International Advanced research Centre for Powder Metallurgy and New Materials( ARCI), Taramani, Chennai – 600 113;Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai-600 025;

关键词: Citric acid;    Alkaline water electrolysis;    Oxygen evolution reaction;    Complexing agent;   

DOI  :  10.5599/jese.296

来源: DOAJ

【 摘 要 】

The present work investigates the efficiency of an alkaline water electrolysis process in the presence of a complexing agent like citric acid (CA) when added directly into the electrolyte during the electrolytic process. High surface area nickel electrodes prepared by electrodeposition technique were used as the electrode to evaluate the efficiency of the oxygen evolution reaction (OER) by the polarization measurements and cyclic voltammetry. The quantity of the complexing agent CA in the electrolyte was varied from 0-1 wt. %. An increase in the current density of about 25% resulted at a temperature of 30 °C in the presence of 0.2 wt. % of CA at 1.0 V vs. Hg/HgO. CA was found to improve performance by forming a complex with the alloy electrode and by formation of the high surface area catalyst for efficient OER.

【 授权许可】

Unknown