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Measurement of key electrolyte properties for improved performance of the soluble lead flow battery
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Krishna , M., Wallis , L. P. J., Wills, R.G.A., Hall , D. and Shah, Akeel A. (2017) Measurement of key electrolyte properties for improved performance of the soluble lead flow battery. International Journal of Hydrogen Energy, 42 (29). pp. 18491-18498. doi:10.1016/j.ijhydene.2017.05.004 ISSN 0360-3199.
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Official URL: https://doi.org/10.1016/j.ijhydene.2017.05.004
Abstract
The soluble lead flow battery utilises the Pb/Pb2+ and Pb2+/Pb4+ redox couples. The electrolyte is methanesulfonic acid, in which Pb2+ species are soluble, up to 2.6 mol dm−3. Previous publications have presented data demonstrating differing performances for the electrode and cell reactions. In this paper, electrolyte properties including density, viscosity, ionic conductivity and species concentration are systematically investigated to identify their impact on the efficiency and cycle life of a soluble lead cell under static conditions. The relationship between ionic conductivity and species concentration (Pb2+ and methanesulfonic acid) in the starting electrolyte is shown to be key to cell performance. An electrolyte initially containing 0.7 mol dm−3 Pb(CH3SO3)2 & 1.0 mol dm−3 CH3SO3H is shown to provide optimal electrochemical performance for the soluble lead cell, achieving charge and voltage efficiencies of greater than 80% and 70% respectively along with Pb2+ utilisation of over 80%.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Electrolytes -- Conductivity, Electric batteries | ||||||||
Journal or Publication Title: | International Journal of Hydrogen Energy | ||||||||
Publisher: | Elsevier BV | ||||||||
ISSN: | 0360-3199 | ||||||||
Official Date: | July 2017 | ||||||||
Dates: |
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Volume: | 42 | ||||||||
Number: | 29 | ||||||||
Page Range: | pp. 18491-18498 | ||||||||
DOI: | 10.1016/j.ijhydene.2017.05.004 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 25 September 2017 | ||||||||
Date of first compliant Open Access: | 20 May 2018 | ||||||||
Funder: | Great Britain. Department of Energy and Climate Change |
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