Instability of Ionic Liquid-Based Electrolytes in Li−O2 Batteries

Supti Das; Jonathan Højberg; Kristian Bastholm Knudsen; Reza Younesi; Patrik  Johansson; Poul Norby; Tejs Vegge

doi:10.1021/acs.jpcc.5b04950

Instability of Ionic Liquid-Based Electrolytes in Li−O₂ Batteries

Supti Das, Jonathan Højberg, Kristian Bastholm Knudsen, Reza Younesi, Patrik Johansson, Poul Norby, Tejs Vegge

Chalmers University of Technology

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Ionic liquids (ILs) have been proposed as promising solvents for Li−air battery electrolytes. Here, several ILs have been investigated using differential electrochemical mass spectrometry (DEMS) to investigate the electrochemical stability in a Li−O2 system, by means of quantitative determination of the rechargeability (OER/ORR), and thereby the Coulombic efficiency of discharge and charge. None of the IL-based electrolytes are found to behave as needed for a functional Li−O2 battery but perform better than commonly used organic solvents. Also the extent of rechargeability/reversibility has been found to be strongly dependent on the choice of IL cation and anion as well as various impurities.

Original language	English
Journal	The Journal of Physical Chemistry Part C
Volume	119
Issue number	32
Pages (from-to)	18084–18090
Number of pages	7
ISSN	1932-7447
DOIs	https://doi.org/10.1021/acs.jpcc.5b04950
Publication status	Published - 2015

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title = "Instability of Ionic Liquid-Based Electrolytes in Li−O2 Batteries",

abstract = "Ionic liquids (ILs) have been proposed as promising solvents for Li−air battery electrolytes. Here, several ILs have been investigated using differential electrochemical mass spectrometry (DEMS) to investigate the electrochemical stability in a Li−O2 system, by means of quantitative determination of the rechargeability (OER/ORR), and thereby the Coulombic efficiency of discharge and charge. None of the IL-based electrolytes are found to behave as needed for a functional Li−O2 battery but perform better than commonly used organic solvents. Also the extent of rechargeability/reversibility has been found to be strongly dependent on the choice of IL cation and anion as well as various impurities.",

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T1 - Instability of Ionic Liquid-Based Electrolytes in Li−O2 Batteries

AU - Das, Supti

AU - Højberg, Jonathan

AU - Knudsen, Kristian Bastholm

AU - Younesi, Reza

AU - Johansson, Patrik

AU - Norby, Poul

AU - Vegge, Tejs

PY - 2015

Y1 - 2015

N2 - Ionic liquids (ILs) have been proposed as promising solvents for Li−air battery electrolytes. Here, several ILs have been investigated using differential electrochemical mass spectrometry (DEMS) to investigate the electrochemical stability in a Li−O2 system, by means of quantitative determination of the rechargeability (OER/ORR), and thereby the Coulombic efficiency of discharge and charge. None of the IL-based electrolytes are found to behave as needed for a functional Li−O2 battery but perform better than commonly used organic solvents. Also the extent of rechargeability/reversibility has been found to be strongly dependent on the choice of IL cation and anion as well as various impurities.

AB - Ionic liquids (ILs) have been proposed as promising solvents for Li−air battery electrolytes. Here, several ILs have been investigated using differential electrochemical mass spectrometry (DEMS) to investigate the electrochemical stability in a Li−O2 system, by means of quantitative determination of the rechargeability (OER/ORR), and thereby the Coulombic efficiency of discharge and charge. None of the IL-based electrolytes are found to behave as needed for a functional Li−O2 battery but perform better than commonly used organic solvents. Also the extent of rechargeability/reversibility has been found to be strongly dependent on the choice of IL cation and anion as well as various impurities.

U2 - 10.1021/acs.jpcc.5b04950

DO - 10.1021/acs.jpcc.5b04950

M3 - Journal article

SN - 1932-7447

VL - 119

SP - 18084

EP - 18090

JO - The Journal of Physical Chemistry Part C

JF - The Journal of Physical Chemistry Part C

IS - 32