Fundamental Studies of the Behaviour of Antimony in the Lead-Acid Battery

Dawson, JL 1967, Fundamental Studies of the Behaviour of Antimony in the Lead-Acid Battery , PhD thesis, University of Salford.

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Abstract

One of the technological problems associated with the lead-acid battery is the self-discharge of the negative plate as a result of the deposition of antimony onto the sponge lead electrode, a process known as 'Antimony Poisoning'.

The rate of deposition (III) from aqueous sulphuric acid onto pure lead electrodes was measured using a tracer technique. The deposition rate was found to be independent of the hydrogen overpotential of the electrode and was ascribed to the electrochemical displacement reaction 2Sb0+ 3Pb + 4H+ + 3SO4 = 2Sb + 3Pb SO4 + 2H20.

The results obtained were assessed in conjunction with published data, and a comprehensive picture of the various antimony (III) and antimony (V) reaction paths occurring in the lead-acid battery has been presented. The placing of a suitable ion-exchange material between the separator and the negative plate, with the object of removing antimony (III), could be a feasible method of limiting the problem of 'Antimony Poisoning'.

Item Type: Thesis (PhD)
Depositing User: SB Carlton
Date Deposited: 19 Jul 2018 13:38
Last Modified: 30 Jul 2018 14:45
URI: http://usir.salford.ac.uk/id/eprint/47698

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