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Formation mechanism of porous alkaline iron electrodes

✍ Scribed by K. Vijayamohanan; A.K. Shukla; S. Sathyanarayana

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
668 KB
Volume
32
Category
Article
ISSN
0378-7753

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✦ Synopsis

The formation mechanism of alkaline iron electrodes has been studied using galvanostatic polarisation techniques. An increase in electrode capacity is observed during initial charge-discharge cycling and is attributed to changes in the electrical conductivity, texture, and porosity of the active material. This is supported by an analysis of charge/discharge behaviour and also by linear and Tafel polarisation studies at various stages of formation. Results show that sulphide incorporation enhances the electrical conductivity and thereby exerts a beneficial effect on the charge-discharge characteristics.

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