Journal
CHEMPLUSCHEM
Volume 87, Issue 1, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.202100441
Keywords
bromine electrode; carbon materials; hydrogen bromine; polysulfide bromine; zinc bromine redox flow battery
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Funding
- European Union [875524]
- EPSRC Supergen Energy Storage Project [EP/P003494/1]
- Royal Academy of Engineering UK-Germany Energy Systems Symposium Award [UKDE\100005]
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This article reviews the application of carbon-based materials in bromine electrodes and discusses the research progress in performance and design of zinc-bromine, hydrogen-bromine, and polysulphide-bromine RFB systems.
Bromine based redox flow batteries (RFBs) can provide sustainable energy storage due to the abundance of bromine. Such devices pair Br-2/Br- at the positive electrode with complementary redox couples at the negative electrode. Due to the highly corrosive nature of bromine, electrode materials need to be corrosion resistant and durable. The positive electrode requires good electrochemical activity and reversibility for the Br-2/Br- couple. Carbon materials enjoy the advantages of low cost, excellent electrical conductivity, chemical resistance, wide operational potential ranges, modifiable surface properties, and high surface area. Here carbon based materials for bromine electrodes are reviewed, with a focus on application in zinc-bromine, hydrogen-bromine, and polysulphide-bromine RFB systems, aiming to provide an overview of carbon materials to be used for design and development of bromine electrodes with improved performance. Aspects deserving further R&D are highlighted.
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