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A cost-effective alkaline polysulfide-air redox flow battery enabled by a dual-membrane cell architecture
,
Anna Regoutz,
Anqi Wang ,
Wenjie Mao,
Barun Chakrabarti ,
Ashkan Kavei,
Qilei Song ,
Anthony R. Kucernak ,
Nigel P. Brandon
Nature Communications, Volume: 13, Issue: 1
Swansea University Author:
Rui Tan
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DOI (Published version): 10.1038/s41467-022-30044-w
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 polysul...
| Published in: | Nature Communications |
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| ISSN: | 2041-1723 |
| Published: |
Springer Science and Business Media LLC
2022
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa67805 |
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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. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
The authors gratefully acknowledge financial support from the EPSRC for projects EP/L014289/1 and EP/K002252/1. The authors would also like to thank RFC Power Ltd for the technical discussion. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement no. 851272, ERC-StG-PE8-NanoMMES). R.T. acknowledges a full Ph.D. scholarship funded by the China Scholarship Council. A.R. acknowledges support from the Analytical Chemistry Trust Fund for her CAMS-UK Fellowship and from Imperial College London for her Imperial College Research Fellowship. |
| Issue: |
1 |