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Type: Journal article
Title: An intrinsically non-flammable electrolyte for high-performance potassium batteries
Author: Liu, S.
Mao, J.
Zhang, Q.
Wang, Z.
Pang, W.K.
Zhang, L.
Du, A.
Sencadas, V.
Zhang, W.
Guo, Z.
Citation: Angewandte Chemie International Edition, 2020; 59(9):3638-3644
Publisher: WIiley
Issue Date: 2020
ISSN: 1433-7851
Statement of
Sailin Liu, Jianfeng Mao, Qing Zhang, Zhijie Wang, Wei Kong Pang, Lei Zhang ... et al.
Abstract: Potassium-ion batteries are promising for low-cost and large-scale energy storage applications, but the major obstacle to their application is the lack of safe and effective electrolytes. A phosphate-based fire retardant such as triethyl phosphate is now shown to work as a single solvent with potassium bis(fluorosulfonyl)imide at 0.9 m, in contrast to previous Li and Na systems where phosphates cannot work at low concentrations. This electrolyte is optimized at 2 m, where it exhibits the advantages of low cost, low viscosity, and high conductivity, as well as the formation of a uniform and robust salt-derived solid-electrolyte interphase layer, leading to non-dendritic K-metal plating/stripping with Coulombic efficiency of 99.6 % and a highly reversible graphite anode.
Keywords: batteries
non-flammable materials
Rights: © 2019 Wiley-VCH Verlag GmbH &Co. KGaA, Weinheim
DOI: 10.1002/anie.201913174
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Appears in Collections:Aurora harvest 4
Chemistry and Physics publications

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