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Batteries 2017, 3(2), 15; doi:10.3390/batteries3020015

Developing Electrolyte for a Soluble Lead Redox Flow Battery by Reprocessing Spent Lead Acid Battery Electrodes

Energy Technology Group, University of Southampton, Southampton SO17 1BJ, UK
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Academic Editor: Joeri Van Mierlo
Received: 8 March 2017 / Revised: 19 April 2017 / Accepted: 27 April 2017 / Published: 3 May 2017
(This article belongs to the Special Issue Rechargeable Battery Technologies--From Materials to Applications)
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Abstract

The archival value of this paper is the investigation of novel methods to recover lead (II) ions from spent lead acid battery electrodes to be used directly as electrolyte for a soluble lead flow battery. The methods involved heating electrodes of spent lead acid batteries in methanesulfonic acid and hydrogen peroxide to dissolve solid lead and lead dioxide out of the electrode material. The processes yielded lead methanesulfonate, which is an electrolyte for the soluble lead acid battery. The lead (II) ions in the electrolyte were identified using Inductively Coupled Plasma Mass Spectroscopy and their electrochemistry confirmed using cyclic voltammetry. The concentration of lead (II) ions was determined and it was found that using the higher concentration of hydrogen peroxide yielded the highest concentration of lead (II) ions. The method was therefore found to be sufficient to make electrolyte for a soluble lead cell. View Full-Text
Keywords: lead recovery; electrolyte; soluble lead flow battery; energy storage lead recovery; electrolyte; soluble lead flow battery; energy storage
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MDPI and ACS Style

Orapeleng, K.; Wills, R.G.A.; Cruden, A. Developing Electrolyte for a Soluble Lead Redox Flow Battery by Reprocessing Spent Lead Acid Battery Electrodes. Batteries 2017, 3, 15.

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