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A cost-effective alkaline polysulfide-air redox flow battery enabled by a dual-membrane cell architecture

Xia, Yuhua; Ouyang, Mengzheng; Yufit, Vladimir; Tan, Rui; Regoutz, Anna; Wang, Anqi; Mao, Wenjie; ... Brandon, Nigel P; + view all (2022) A cost-effective alkaline polysulfide-air redox flow battery enabled by a dual-membrane cell architecture. Nature Communications , 13 , Article 2388. 10.1038/s41467-022-30044-w. Green open access

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Abstract

With the rapid development of renewable energy harvesting technologies, there is a significant demand for long-duration energy storage technologies that can be deployed at grid scale. In this regard, polysulfide-air redox flow batteries demonstrated great potential. However, the crossover of polysulfide is one significant challenge. Here, we report a stable and cost-effective alkaline-based hybrid polysulfide-air redox flow battery where a dual-membrane-structured flow cell design mitigates the sulfur crossover issue. Moreover, combining manganese/carbon catalysed air electrodes with sulfidised Ni foam polysulfide electrodes, the redox flow battery achieves a maximum power density of 5.8 mW cm−2 at 50% state of charge and 55 °C. An average round-trip energy efficiency of 40% is also achieved over 80 cycles at 1 mA cm−2. Based on the performance reported, techno-economic analyses suggested that energy and power costs of about 2.5 US$/kWh and 1600 US$/kW, respectively, has be achieved for this type of alkaline polysulfide-air redox flow battery, with significant scope for further reduction.

Type: Article
Title: A cost-effective alkaline polysulfide-air redox flow battery enabled by a dual-membrane cell architecture
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/s41467-022-30044-w
Publisher version: https://doi.org/10.1038/s41467-022-30044-w
Language: English
Additional information: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Keywords: Batteries, Chemical engineering, Energy, Materials for energy and catalysis
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10148194
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