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

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

SUBMITTER: Xia Y 

PROVIDER: S-EPMC9061742 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature