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|Title:||An intrinsically non-flammable electrolyte for high-performance potassium batteries|
|Citation:||Angewandte Chemie International Edition, 2020; 59(9):3638-3644|
|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.|
|Rights:||© 2019 Wiley-VCH Verlag GmbH &Co. KGaA, Weinheim|
|Appears in Collections:||Aurora harvest 4|
Chemistry and Physics publications
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