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High performance polyanthraquinone/Co–Ni(OH)2 aqueous batteries based on hydroxyl and potassium insertion/extraction reactions

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Abstract

Aqueous potassium ion batteries (APIBs) are safe, robust, and environmentally friendly energy storage equipments. In this work, a high performance K+/OH hybrid ion aqueous battery, using Co–Ni(OH)2 as the cathode and poly(1,4-anthraquinone) (P14AQ) as the anode, is proposed and characterized. By tuning the polymerization degree of P14AQ, the P14AQ/Co–Ni(OH)2 battery delivers a high energy/power density of 93 W h kg−1 at 1040 W kg−1 with an improved cycle life. Moreover, this P14AQ/Co–Ni(OH)2 battery shows a wide temperature operation window ranging from −30 °C to 25 °C. This proposed system is expected to be a promising battery for large-scale energy storage.

Graphical abstract: High performance polyanthraquinone/Co–Ni(OH)2 aqueous batteries based on hydroxyl and potassium insertion/extraction reactions

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Publication details

The article was received on 05 Aug 2019, accepted on 14 Oct 2019 and first published on 16 Oct 2019


Article type: Communication
DOI: 10.1039/C9SE00598F
Sustainable Energy Fuels, 2020, Advance Article

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    High performance polyanthraquinone/Co–Ni(OH)2 aqueous batteries based on hydroxyl and potassium insertion/extraction reactions

    C. Liu, T. Ma, K. Xia, X. Hou, Q. Nian, Y. Cai and J. Liang, Sustainable Energy Fuels, 2020, Advance Article , DOI: 10.1039/C9SE00598F

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