The University of Southampton
University of Southampton Institutional Repository

Performance of recovered and reagent grade electrolyte in a soluble lead redox cell

Performance of recovered and reagent grade electrolyte in a soluble lead redox cell
Performance of recovered and reagent grade electrolyte in a soluble lead redox cell

This paper presents the performance of ‘recovered’ electrolyte for the soluble lead flow battery, made by recycling conventional lead-acid battery electrodes, and compares it to reagent grade electrolyte for the same system. The two electrolyte compositions were cycled in static and flow cells and their charge, energy, and voltage efficiencies compared. The average charge, energy, and voltage efficiencies of static cells using 1.0 mol·dm¯³ Pb²+ recovered electrolyte were 89%, 86%, and 96%, while cells using reagent grade electrolyte averaged 63%, 49%, and 78%, respectively. The average charge efficiency of flow cells with recovered electrolyte was consistently above 80% and within 10% of the average for cells with reagent grade electrolyte. The average energy and voltage efficiencies were 62% and 73%, respectively, diverting from averages for the reagent grade electrolyte cells by less than 15%. The highest average cycle life was for cells with recovered electrolyte at 187 cycles, while that of cells with reagent grade electrolyte peaked at 102. Trace elements in both electrolyte compositions were analysed and their presence in the recovered electrolyte appears to enhance performance of the soluble lead cells. The recovered electrolyte is an electrochemically viable substitute for the reagent grade electrolyte.

Expended battery electrodes, Recovered electrolyte, Soluble lead flow battery
2352-152X
49-56
Orapeleng, Keletso
eec788a5-43c4-4cb0-9e71-5577612e8855
Wills, Richard G.A.
60b7c98f-eced-4b11-aad9-fd2484e26c2c
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Orapeleng, Keletso
eec788a5-43c4-4cb0-9e71-5577612e8855
Wills, Richard G.A.
60b7c98f-eced-4b11-aad9-fd2484e26c2c
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab

Orapeleng, Keletso, Wills, Richard G.A. and Cruden, Andrew (2018) Performance of recovered and reagent grade electrolyte in a soluble lead redox cell. Journal of Energy Storage, 20, 49-56. (doi:10.1016/j.est.2018.08.017).

Record type: Article

Abstract

This paper presents the performance of ‘recovered’ electrolyte for the soluble lead flow battery, made by recycling conventional lead-acid battery electrodes, and compares it to reagent grade electrolyte for the same system. The two electrolyte compositions were cycled in static and flow cells and their charge, energy, and voltage efficiencies compared. The average charge, energy, and voltage efficiencies of static cells using 1.0 mol·dm¯³ Pb²+ recovered electrolyte were 89%, 86%, and 96%, while cells using reagent grade electrolyte averaged 63%, 49%, and 78%, respectively. The average charge efficiency of flow cells with recovered electrolyte was consistently above 80% and within 10% of the average for cells with reagent grade electrolyte. The average energy and voltage efficiencies were 62% and 73%, respectively, diverting from averages for the reagent grade electrolyte cells by less than 15%. The highest average cycle life was for cells with recovered electrolyte at 187 cycles, while that of cells with reagent grade electrolyte peaked at 102. Trace elements in both electrolyte compositions were analysed and their presence in the recovered electrolyte appears to enhance performance of the soluble lead cells. The recovered electrolyte is an electrochemically viable substitute for the reagent grade electrolyte.

Text
EST_2018_354_Original_V0 - Accepted Manuscript
Download (1MB)

More information

Accepted/In Press date: 23 August 2018
e-pub ahead of print date: 8 September 2018
Published date: 1 December 2018
Keywords: Expended battery electrodes, Recovered electrolyte, Soluble lead flow battery

Identifiers

Local EPrints ID: 426914
URI: http://eprints.soton.ac.uk/id/eprint/426914
ISSN: 2352-152X
PURE UUID: 93837233-a669-4aa3-935d-e4bef6223a85
ORCID for Richard G.A. Wills: ORCID iD orcid.org/0000-0002-4805-7589
ORCID for Andrew Cruden: ORCID iD orcid.org/0000-0003-3236-2535

Catalogue record

Date deposited: 14 Dec 2018 17:30
Last modified: 18 Feb 2021 17:19

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×