An organic/inorganic electrode-based hydronium-ion battery

Zhaowei Guo, Jianhang Huang, Xiaoli Dong, Yongyao Xia, Lei Yan, Zhuo Wang and Yonggang Wang ()
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Zhaowei Guo: Fudan University
Jianhang Huang: Fudan University
Xiaoli Dong: Fudan University
Yongyao Xia: Fudan University
Lei Yan: Fudan University
Zhuo Wang: Fudan University
Yonggang Wang: Fudan University

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Hydronium-ion batteries are regarded as one of the most promising energy technologies as next-generation power sources, benefiting from their cost effectivity and sustainability merits. Herein, we propose a hydronium-ion battery which is based on an organic pyrene-4,5,9,10-tetraone anode and an inorganic MnO2@graphite felt cathode in an acid electrolyte. Its operation involves a quinone/hydroquinone redox reaction on anode and a MnO2/Mn2+ conversion reaction on cathode, in parallel with the transfer of H3O+ between two electrodes. The distinct operation mechanism affords this hydronium-ion battery an energy density up to 132.6 Wh kg−1 and a supercapacitor-comparable power density of 30.8 kW kg−1, along with a long-term cycling life over 5000 cycles. Furthermore, surprisingly, this hydronium-ion battery works well even with a frozen electrolyte under −40 °C, and superior rate performance and cycle stability remain at −70 °C.

Date: 2020
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DOI: 10.1038/s41467-020-14748-5

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