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Role of the Lithium Salt in the Performance of Lithium–Oxygen Batteries: A Comparative Study
Author(s) -
Elia Giuseppe Antonio,
Park JinBum,
Sun YangKook,
Scrosati Bruno,
Hassoun Jusef
Publication year - 2014
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201300160
Subject(s) - trifluoromethanesulfonate , lithium (medication) , lithium perchlorate , electrolyte , chemistry , inorganic chemistry , electrochemistry , organic chemistry , electrode , catalysis , medicine , endocrinology
In this paper we report a comparative study of the electrochemical properties of a lithium–oxygen cell using a tetraethylene glycol dimethyl ether (TEGDME)‐based electrolyte solution with four different lithium salts, namely, lithium‐bis‐(trifluormethanesulfonyl)‐imide, LiN(SO 2 CF 3 ) 2 , lithium trifluoromethanesulfonate, LiCF 3 SO 3 , lithium perchlorate, LiClO 4 , and lithium hexafluorophosphate, LiPF 6 . This study evidences the role of the electrolyte salt in affecting the cell polarization as a reflection of its specific properties in terms of lithium transference number and interface resistance. LiCF 3 SO 3 is finally identified as the best choice for assuring low cell polarization.