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A novel flow battery—A lead-acid battery based on an electrolyte with soluble lead(II) V. Studies of the lead negative electrode

A novel flow battery—A lead-acid battery based on an electrolyte with soluble lead(II) V. Studies of the lead negative electrode
A novel flow battery—A lead-acid battery based on an electrolyte with soluble lead(II) V. Studies of the lead negative electrode
The structure of lead deposits (approximately 1 mm thick) formed in conditions likely to be met at the negative electrode during the charge/discharge cycling of a soluble lead-acid flow battery is examined. The quality of the lead deposit could be improved by appropriate additives and the preferred additive was shown to be the hexadecyltrimethylammonium cation, C16H33(CH3)3N+, at a concentration of 5 mM. In the presence of this additive, thick layers with acceptable uniformity could be formed over a range of current densities (20–80 mA cm?2) and solution compositions. While electrolyte compositions with lead(II) concentrations in the range 0.1–1.5 M and methanesulfonic acid concentrations in the range 0–2.4 M have been investigated, the best quality deposits are formed at lower concentrations of both species. Surprisingly, the acid concentration was more important than the lead(II) concentration; hence a possible initial electrolyte composition is 1.2 M Pb(II) + 5 mM C16H33(CH3)3N+ without added acid.
additives, electroplating conditions, lead deposition, lead dissolution
0378-7753
621-629
Pletcher, Derek
f22ebe69-b859-4a89-80b0-9e190e6f8f30
Zhou, Hantao
052388cc-b782-4c01-b48a-db74b5ed4d0a
Kear, Gareth
ff3ac962-2240-4535-a240-2394ce16eef0
Low, C.T. John
e5db4cdb-1b03-4297-a38f-1dd6b50a67d3
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Wills, Richard G.A.
60b7c98f-eced-4b11-aad9-fd2484e26c2c
Pletcher, Derek
f22ebe69-b859-4a89-80b0-9e190e6f8f30
Zhou, Hantao
052388cc-b782-4c01-b48a-db74b5ed4d0a
Kear, Gareth
ff3ac962-2240-4535-a240-2394ce16eef0
Low, C.T. John
e5db4cdb-1b03-4297-a38f-1dd6b50a67d3
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Wills, Richard G.A.
60b7c98f-eced-4b11-aad9-fd2484e26c2c

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) V. Studies of the lead negative electrode. Journal of Power Sources, 180 (1), 621-629. (doi:10.1016/j.jpowsour.2008.02.024).

Record type: Article

Abstract

The structure of lead deposits (approximately 1 mm thick) formed in conditions likely to be met at the negative electrode during the charge/discharge cycling of a soluble lead-acid flow battery is examined. The quality of the lead deposit could be improved by appropriate additives and the preferred additive was shown to be the hexadecyltrimethylammonium cation, C16H33(CH3)3N+, at a concentration of 5 mM. In the presence of this additive, thick layers with acceptable uniformity could be formed over a range of current densities (20–80 mA cm?2) and solution compositions. While electrolyte compositions with lead(II) concentrations in the range 0.1–1.5 M and methanesulfonic acid concentrations in the range 0–2.4 M have been investigated, the best quality deposits are formed at lower concentrations of both species. Surprisingly, the acid concentration was more important than the lead(II) concentration; hence a possible initial electrolyte composition is 1.2 M Pb(II) + 5 mM C16H33(CH3)3N+ without added acid.

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More information

Published date: 15 May 2008
Keywords: additives, electroplating conditions, lead deposition, lead dissolution
Organisations: Chemistry, Engineering Sciences

Identifiers

Local EPrints ID: 63785
URI: http://eprints.soton.ac.uk/id/eprint/63785
ISSN: 0378-7753
PURE UUID: e55d21f9-4b45-4c89-ba26-4dba7ddbf2f5
ORCID for Richard G.A. Wills: ORCID iD orcid.org/0000-0002-4805-7589

Catalogue record

Date deposited: 04 Nov 2008
Last modified: 16 Mar 2024 03:34

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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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