All-polymer particulate slurry batteries

Wen Yan, Caixing Wang, Jiaqi Tian, Guoyin Zhu, Lianbo Ma, Yanrong Wang, Renpeng Chen, Yi Hu, Lei Wang, Tao Chen, Jing Ma and Zhong Jin ()
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Wen Yan: Nanjing University
Caixing Wang: Nanjing University
Jiaqi Tian: Nanjing University
Guoyin Zhu: Nanjing University
Lianbo Ma: Nanjing University
Yanrong Wang: Nanjing University
Renpeng Chen: Nanjing University
Yi Hu: Nanjing University
Lei Wang: Nanjing University
Tao Chen: Nanjing University
Jing Ma: Nanjing University
Zhong Jin: Nanjing University

Nature Communications, 2019, vol. 10, issue 1, 1-11

Abstract: Abstract Redox flow batteries are promising for large-scale energy storage, but some long-standing problems such as safety issues, system cost and cycling stability must be resolved. Here we demonstrate a type of redox flow battery that is based on all-polymer particulate slurry electrolytes. Micro-sized and uniformly dispersed all-polymer particulate suspensions are utilized as redox-active materials in redox flow batteries, breaking through the solubility limit and facilitating the application of insoluble redox-active materials. Expensive ion-exchange membranes are replaced by commercial dialysis membranes, which can simultaneously realize the rapid shuttling of H+ ions and cut off the migration of redox-active particulates across the separator via size exclusion. In result, the all-polymer particulate slurry redox flow batteries exhibit a highly reversible multi-electron redox process, rapid electrochemical kinetics and ultra-stable long-term cycling capability.

Date: 2019
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DOI: 10.1038/s41467-019-10607-0

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