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Author Chandrasekaran, R. ♦ Arulraj, I. ♦ Pattabiraman, R. ♦ Dheenadayalan, S. ♦ Muzhumathi, S. ♦ Venkatesan, V. K.
Source CSIR-Central Electrochemical Research Institute
Content type Text
Publisher Central Electrochemical Research Institute
File Format PDF
Copyright Year ©1988
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Electrochemical Power Sources
Abstract Porous gas diffusion electrodes of two layer and three layer type are prepared by cold compacting and sintering technique. The optimum concentration of acetylene black is 2 wt% and activated charcoal is 10 wt%. The incorporation of silver by different techniques like thermal decomposition of silver salts is presented. The amount of silver varies from 53 mg.cm-2 to 106 mg.cm-2. Electrode area is 30 cmz. The electrodes were polarised as oxygen gas diffusion electrodes in 6.0 M KOH solution at 333K.The electrodes were found to be polarised to -145 mV at 60 mA.cm-2 and to -190 mV at 80 mA.cm9 at 333K. These electrodes have been tested continuously and were found to show the same performance for 500 hrs -7000 hrs. The performance of the same was compared with the electrode containing acetylene black, heat treated and untreated in nitrogen atmosphere at 1073K for 20 hours. Incorporation of platinised acetylene black (carbon) as electrocatalyst for oxygen reduction has also been attempted
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1988-01-01
Journal PeerReviewed