Instability of Ionic Liquid-Based Electrolytes in Li-O2 Batteries
Artikel i vetenskaplig tidskrift, 2015

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-O-2 system, by means of quantitative determination of the rechargeability (GER/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-O-2 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.

Författare

S. Das

Danmarks Tekniske Universitet (DTU)

J. Hojberg

Danmarks Tekniske Universitet (DTU)

Haldor Topsoe

K. B. Knudsen

Danmarks Tekniske Universitet (DTU)

S. R. Younesi

Uppsala universitet

Danmarks Tekniske Universitet (DTU)

Patrik Johansson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

P. Norby

Danmarks Tekniske Universitet (DTU)

T. Vegge

Danmarks Tekniske Universitet (DTU)

Journal of Physical Chemistry C

1932-7447 (ISSN) 1932-7455 (eISSN)

Vol. 119 18084-18090

Drivkrafter

Hållbar utveckling

Ämneskategorier

Materialteknik

Nanoteknik

Styrkeområden

Energi

Materialvetenskap

DOI

10.1021/acs.jpcc.5b04950