The dissolution of iron from the negative material in pocket plate nickel-cadmium batteries |
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| Authors: | M Z A Munshi A C C Tseung J Parker |
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| Affiliation: | (1) Department of Chemistry, The City University, Northampton Square, EC1 OHB London, UK;(2) Marathon-Alcad Limited, Union Street, PO Box 4, B98 7BW Redditch Worcestershire, UK;(3) Present address: Department of Metallurgy and Materials Science, McMaster University, L8S 4L7 Hamilton, Ontario, Canada |
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| Abstract: | A common mode of failure of nickel-cadmium flooded pocket plate cells is iron poisoning of the positive plate due to transfer of iron into the active material from active materials and materials of construction. Nickel plated steel pockets are sometimes used to minimize iron dissolution, particularly on the positive electrode. Sometimes -Fe2O3 is used as an additive to the cadmium electrode. This paper assesses the extent of dissolution of iron from-Fe2O3 by using electron microscopy, X-ray crystallography, cyclic voltammetry, coulometric and atomic absorption measurements. |
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