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Empowering the smart grid: Can redox batteries be matched to renewable energy systems for energy storage?

Halls, Jonathan E.; Hawthornthwaite, Amanda; Hepworth, Russell J.; Roberts, Noel A.; Wright, Kevin J.; Zhou, Yan; Haswell, Stephen J.; Haywood, Stephanie K.; Kelly, Stephen M.; Lawrence, Nathan S.; Wadhawan, Jay D.

Authors

Jonathan E. Halls

Amanda Hawthornthwaite

Russell J. Hepworth

Noel A. Roberts

Kevin J. Wright

Yan Zhou

Stephen J. Haswell

Stephanie K. Haywood

Nathan S. Lawrence



Abstract

The charging of an undivided cerium-zinc redox battery by various current waveforms some of which mimic the output of renewable energy (solar, wind, tidal, biofuel burning) to electricity transducers is considered in this work, where the battery operates through diffusion-only conditions, and is discharged galvanostatically. Under reasonable assumption, the mathematical model developed enables the observation that the performance characteristic of the cells charged with a constant power input differentiates between the various current-charge waveforms, with cell geometry and electrode kinetics playing subtle, but significant, roles; in particular, high efficiency is observed for sunlight-charged batteries which are thin and suffer no corrosion of the sacrificial electrode, and which have already experienced a charge-discharge cycle. The performance characteristics of the systems are interpreted in the light of consequences for smart grid realisation, and indicate that, for a constant power input, the most matched renewable is biofuel burning with a current output that linearly increases with time.

Journal Article Type Article
Publication Date Mar 1, 2013
Journal Energy & Environmental Science
Print ISSN 1754-5692
Electronic ISSN 1754-5706
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 6
Issue 3
Pages 1026-1041
APA6 Citation Halls, J. E., Hawthornthwaite, A., Hepworth, R. J., Roberts, N. A., Wright, K. J., Zhou, Y., …Wadhawan, J. D. (2013). Empowering the smart grid: Can redox batteries be matched to renewable energy systems for energy storage?. Energy & environmental science, 6(3), 1026-1041. https://doi.org/10.1039/c3ee23708g
DOI https://doi.org/10.1039/c3ee23708g
Keywords Renewable Energy, Sustainability and the Environment; Nuclear Energy and Engineering; Pollution; Environmental Chemistry
Publisher URL http://pubs.rsc.org/en/Content/ArticleLanding/2013/EE/c3ee23708g#!divAbstract
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