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Optimization of the pyrolysis temperature of active carbon-CoTMPP catalysts for air electrodes in alkaline media

✍ Scribed by I. Iliev; S. Gamburzev; A. Kaisheva

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
474 KB
Volume
17
Category
Article
ISSN
0378-7753

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✦ Synopsis

of Sciences, Catalysts prepared from active carbon impregnated with CoTMPP, and then heat treated in argon at temperatures between 200 and 1200 "C were investigated in air gas-diffusion electrodes.

It was found that heating the catalyst at temperatures between 460 and 810 "C improved the initial polarization characteristics of air electrodes. The activity of the electrodes and the transport hindrances in them were measured during long-term operation with air at 100 mA cmW2. The results show that the activity of air electrodes with catalysts heat-treated at 750 -850 "C remains high and stable. The transport hindrances of the electrodes show a minimum in the same temperature range but increase with time of operation.

πŸ“œ SIMILAR VOLUMES

On the effect of various active carbon c
On the effect of various active carbon catalysts on the behaviour of carbon gas-diffusion air electrodes: 1. Alkaline solutions
✍ I. Iliev; J. Mrha; A. Kaisheva; S. Gamburzev πŸ“‚ Article πŸ“… 1976 πŸ› Elsevier Science 🌐 English βš– 428 KB

The electrochemical behaviour of carbon gas-diffusion air electrodes in alkaline solutions was investigated. Electrodes with defined structural and hydrophobic properties were chosen as a suitable system for comparing the electrochemical activity of different active carbon catalysts. The currentvolt