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A novel flow battery — a lead-acid battery based on an electrolyte with soluble lead(II): part VI. Studies of the lead dioxide positive electrode

Pletcher, Derek, Zhou, Hantao, Kear, Gareth, Low, C.T. John, Walsh, Frank C. and Wills, Richard G.A. (2008) A novel flow battery — a lead-acid battery based on an electrolyte with soluble lead(II): part VI. Studies of the lead dioxide positive electrode Journal of Power Sources, 180, (1), pp. 630-634.

Record type: Article

Abstract

The structure of thick lead dioxide deposits (approximately 1 mm) formed in conditions likely to be met at the positive electrode during the charge/discharge cycling of a soluble lead-acid flow battery is examined. Compact and well adherent layers are possible with current densities >100 mA cm?2 in electrolytes containing 0.1–1.5 M lead(II) and methanesulfonic acid concentrations in the range 0–2.4 M; the solutions also contained 5 mM hexadecyltrimethylammonium cation, C16H33(CH3)3N+. From the viewpoint of the layer properties, the limitation is stress within the deposit leading to cracking and lifting away from the substrate; the stress appears highest at high acid concentration and high current density. There are, however, other factors limiting the maximum current density for lead dioxide deposition, namely oxygen evolution and the overpotential associated with the deposition of lead dioxide. A strategy for operating the soluble lead-acid flow battery is proposed.

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More information

e-pub ahead of print date: 10 March 2008
Published date: 15 May 2008
Keywords: additives, lead dioxide deposition, electroplating conditions, lead-acid battery
Organisations: Engineering Mats & Surface Engineerg Gp, Chemistry

Identifiers

Local EPrints ID: 65436
URI: http://eprints.soton.ac.uk/id/eprint/65436
ISSN: 0378-7753
PURE UUID: d5e68693-ef2f-4c6c-b875-2cd076913c76

Catalogue record

Date deposited: 13 Feb 2009
Last modified: 17 Aug 2017 02:26

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Contributors

Author: Derek Pletcher
Author: Hantao Zhou
Author: Gareth Kear
Author: C.T. John Low
Author: Frank C. Walsh

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