Lithium-salt monohydrate melt: A stable electrolyte for aqueous lithium-ion batteries

By Seongjae Ko, Yuki Yamada, K. Miyazaki, T. Shimada, Eriko Watanabe, Yoshitaka Tateyama, Takeshi Kamiya, Tsunetoshi Honda, J. Akikusa, Atsuo Yamada. Electrochemistry communications, 2019

149 citations recorded by the source corpus.

Abstract Concentrated aqueous electrolytes are promising for high-voltage and safe aqueous lithium-ion batteries because of their wide potential window. For Li system, a room-temperature dihydrate melt (27.8 mol kg −1 ) has been demonstrated to function as a stable aqueous electrolyte, but more concentrated electrolytes have yet to be discovered due to the limited solubility of Li salts. Here we report a room-temperature monohydrate melt of Li salts (55.6 mol kg −1 ) as an ultimate system of concentrated aqueous electrolytes. It has been discovered by adopting a Li salt with an asymmetric imide anion that shows ultra-high solubility in water. The monohydrate-melt electrolyte provides a wide potential window of ~5 V based on its dramatically improved passivation ability, which, for the first time, enables the Li-alloying reaction of Al in aqueous electrolytes.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/f11fa23789a571ae39aacbc2a4735c960f1e97a6

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In Electrical and Electronic Engineering

1. Arthur Wald Cresce
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Citations in the corpus

• Aqueous lithium‐ion batteries (2021, background): “2, quite close to the monohydrate condition published by Ko et al.(90) Also, 9.”