Antimony in lead-acid cells. III. Transport measurements |
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| Authors: | A. A. Jenkins W. C. Maskell F. L. Tye |
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| Affiliation: | (1) Gestetner Manufacturing Ltd., PO Box 466, N17 9LT London, UK;(2) Department of Metallurgy and Materials Science, Imperial College, Prince Consort Road, SW7 2BP London, UK;(3) Middlesex Polytechnic, Bounds Green Road, N11 2NQ London, UK |
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| Abstract: | The mechanism of transport of Sb(V) in H2SO4 through 12 commercial separators was investigated. This was carried out by comparing the diffusion coefficient of Sb(V) with the electrical ionic conductivity which should be simply related if diffusion is the rate-controlling transport process. Rates increased as convective flow became dominant. Separators with pore diameters below 2  m and above 20 m showed transport rate control by diffusion and convective flow, respectively. Between 2 and 20 m both processes contributed significantly. |
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