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Redox flow batteries for energy storage: their promise, achievements and challenges

Redox flow batteries for energy storage: their promise, achievements and challenges
Redox flow batteries for energy storage: their promise, achievements and challenges
Redox flow batteries continue to be developed for utility-scale energy storage applications. Progress on standardisation, safety and recycling regulations as well as financing has helped to improve their commercialisation. The technical progress of redox flow batteries has not considered adequately the significance of electrolyte flow velocity, mass transfer and plug flow reactor modelling, despite steps in the right direction. 3D simulations of fluid flow, pressure drop, current distribution and mechanical resistance using commercial software are becoming more common, but satisfactory validation by experiments is still unusual. The majority of research tends to report short term studies on small electrodes, often in poorly defined flow channels; long term evaluation of electrode and membrane durability on a pilot scale is needed. Digital imaging of electrode structure using X-ray computed tomography is increasingly being used. Much activity is directed to organic and non-aqueous systems. However, scale-up and high, sustained charge capacity using electrolytes of moderate cost which are environmentally acceptable to source, store, transport and handle require considerable attention. Recommendations for future work are discussed.
electrochemical engineering, energy storage, mathematical modelling, redox flow batteries, state of charge, vanadium
2451-9103
117-126
Arenas, Luis F.
6e7e3d10-2aab-4fc3-a6d4-63a6614d0403
Ponce De Leon, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Arenas, Luis F.
6e7e3d10-2aab-4fc3-a6d4-63a6614d0403
Ponce De Leon, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2

Arenas, Luis F., Ponce De Leon, Carlos and Walsh, Frank C. (2019) Redox flow batteries for energy storage: their promise, achievements and challenges. Current Opinion in Electrochemistry, 16, 117-126. (doi:10.1016/j.coelec.2019.05.007).

Record type: Article

Abstract

Redox flow batteries continue to be developed for utility-scale energy storage applications. Progress on standardisation, safety and recycling regulations as well as financing has helped to improve their commercialisation. The technical progress of redox flow batteries has not considered adequately the significance of electrolyte flow velocity, mass transfer and plug flow reactor modelling, despite steps in the right direction. 3D simulations of fluid flow, pressure drop, current distribution and mechanical resistance using commercial software are becoming more common, but satisfactory validation by experiments is still unusual. The majority of research tends to report short term studies on small electrodes, often in poorly defined flow channels; long term evaluation of electrode and membrane durability on a pilot scale is needed. Digital imaging of electrode structure using X-ray computed tomography is increasingly being used. Much activity is directed to organic and non-aqueous systems. However, scale-up and high, sustained charge capacity using electrolytes of moderate cost which are environmentally acceptable to source, store, transport and handle require considerable attention. Recommendations for future work are discussed.

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Redox flow batteries for energy storage- their promise, achievements and challenges - Accepted Manuscript
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Accepted/In Press date: 9 May 2019
e-pub ahead of print date: 29 May 2019
Published date: August 2019
Keywords: electrochemical engineering, energy storage, mathematical modelling, redox flow batteries, state of charge, vanadium

Identifiers

Local EPrints ID: 431380
URI: http://eprints.soton.ac.uk/id/eprint/431380
ISSN: 2451-9103
PURE UUID: 2eac6fc1-3d57-4eee-b644-718477baca8e
ORCID for Carlos Ponce De Leon: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 31 May 2019 16:30
Last modified: 22 Nov 2021 07:24

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