TY - JOUR
T1 - Communication—solvate ionic liquid incorporating lithium nitrate as a redox mediator for lithium-oxygen batteries
AU - Togasaki, Norihiro
AU - Naruse, Takuya
AU - Momma, Toshiyuki
AU - Osaka, Tetsuya
PY - 2019/1/1
Y1 - 2019/1/1
N2 - 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.
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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U2 - 10.1149/2.0731914jes
DO - 10.1149/2.0731914jes
M3 - Article
AN - SCOPUS:85073877655
SN - 0013-4651
VL - 166
SP - A3391-A3393
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 14
ER -
