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Comparison of the reaction mechanisms of electrocatalytic oxygen reduction using transition metal thiospinels and chelates

โœ Scribed by H. Behret; H. Binder; W. Clauberg; G. Sandstede

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
530 KB
Volume
23
Category
Article
ISSN
0013-4686

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โœฆ Synopsis

Abatnet -The cathode process of oxygen reduction on thiospinels and other sulphida was examined by potentiodynamic, galvanostatic and rotating ring-disc electrode measurements. The highest activity was found with the sulphur compounds of cobalt and iron. The results are compared with those obtained with iron and cobalt metal chelates of the macrocyclic N+ type (phthalocyanines, dibenzotetraazaannulenes) because knowledge is required about the reaction itself and the mechanism of the reduction of activity of the non-precious metal catalysts. The reaction scheme for the oxygen reduction is discussed and values of the rate constants of the electrochemical reactions are given

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