Communication—solvate ionic liquid incorporating lithium nitrate as a redox mediator for lithium-oxygen batteries

Norihiro Togasaki; Takuya Naruse; Toshiyuki Momma; Tetsuya Osaka

doi:10.1149/2.0731914jes

Communication—solvate ionic liquid incorporating lithium nitrate as a redox mediator for lithium-oxygen batteries

Norihiro Togasaki, Takuya Naruse, Toshiyuki Momma, Tetsuya Osaka

Research output: Contribution to journal › Article › peer-review

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Abstract

A solvate ionic liquid (SIL) of highly concentrated 4.0 M lithium nitrate (LiNO3) in a dimethylsulfoxide solution is introduced for lithium-oxygen batteries. As a redox mediator (RM), highly concentrated LiNO₃ in the SIL works more effectively than the lower concentrated one to decompose lithium peroxide (Li₂O₂) on the cathode with an extremely low charging voltage of 3.6 V. In addition, X-ray photoelectron spectroscopy analysis confirms that side products during discharging and charging are markedly restricted in the SIL. The low solubility of Li₂O₂ intermediate (LiO2) in the SIL may be an important reason for the restriction of side products.

Original language	English
Pages (from-to)	A3391-A3393
Journal	Journal of the Electrochemical Society
Volume	166
Issue number	14
DOIs	https://doi.org/10.1149/2.0731914jes
Publication status	Published - 2019 Jan 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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abstract = "A solvate ionic liquid (SIL) of highly concentrated 4.0 M lithium nitrate (LiNO3) in a dimethylsulfoxide solution is introduced for lithium-oxygen batteries. As a redox mediator (RM), highly concentrated LiNO3 in the SIL works more effectively than the lower concentrated one to decompose lithium peroxide (Li2O2) on the cathode with an extremely low charging voltage of 3.6 V. In addition, X-ray photoelectron spectroscopy analysis confirms that side products during discharging and charging are markedly restricted in the SIL. The low solubility of Li2O2 intermediate (LiO2) in the SIL may be an important reason for the restriction of side products.",

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AU - Togasaki, Norihiro

AU - Naruse, Takuya

AU - Momma, Toshiyuki

AU - Osaka, Tetsuya

PY - 2019/1/1

Y1 - 2019/1/1

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AB - A solvate ionic liquid (SIL) of highly concentrated 4.0 M lithium nitrate (LiNO3) in a dimethylsulfoxide solution is introduced for lithium-oxygen batteries. As a redox mediator (RM), highly concentrated LiNO3 in the SIL works more effectively than the lower concentrated one to decompose lithium peroxide (Li2O2) on the cathode with an extremely low charging voltage of 3.6 V. In addition, X-ray photoelectron spectroscopy analysis confirms that side products during discharging and charging are markedly restricted in the SIL. The low solubility of Li2O2 intermediate (LiO2) in the SIL may be an important reason for the restriction of side products.

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Communication—solvate ionic liquid incorporating lithium nitrate as a redox mediator for lithium-oxygen batteries

Abstract

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