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

Research output: Contribution to journalJournal articleResearchpeer-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 languageEnglish
JournalThe Journal of Physical Chemistry Part C
Volume119
Issue number32
Pages (from-to)18084–18090
Number of pages7
ISSN1932-7447
DOIs
Publication statusPublished - 2015

Cite this

Das, Supti ; Højberg, Jonathan ; Knudsen, Kristian Bastholm ; Younesi, Reza ; Johansson, Patrik ; Norby, Poul ; Vegge, Tejs. / Instability of Ionic Liquid-Based Electrolytes in Li−O2 Batteries. In: The Journal of Physical Chemistry Part C. 2015 ; Vol. 119, No. 32. pp. 18084–18090.
@article{1a20bcadcd21477e991eac3bbcbb5208,
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.",
author = "Supti Das and Jonathan H{\o}jberg and Knudsen, {Kristian Bastholm} and Reza Younesi and Patrik Johansson and Poul Norby and Tejs Vegge",
year = "2015",
doi = "10.1021/acs.jpcc.5b04950",
language = "English",
volume = "119",
pages = "18084–18090",
journal = "The Journal of Physical Chemistry Part C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "32",

}

Instability of Ionic Liquid-Based Electrolytes in Li−O2 Batteries. / Das, Supti; Højberg, Jonathan; Knudsen, Kristian Bastholm; Younesi, Reza; Johansson, Patrik ; Norby, Poul; Vegge, Tejs.

In: The Journal of Physical Chemistry Part C, Vol. 119, No. 32, 2015, p. 18084–18090.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

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

VL - 119

SP - 18084

EP - 18090

JO - The Journal of Physical Chemistry Part C

JF - The Journal of Physical Chemistry Part C

SN - 1932-7447

IS - 32

ER -