Open AccessLimiting Current Density in Single-Ion-Conducting and Conventional Block Copolymer Electrolytes
Author(s) -
Zach J. Hoffman,
Alec S. Ho,
Saheli Chakraborty,
Nitash P. Balsara
Publication year - 2022
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ac613b
Subject(s) - electrolyte , limiting current , limiting , current density , lithium (medication) , ion , current (fluid) , materials science , current limiting , polymer , chemistry , analytical chemistry (journal) , electrode , thermodynamics , electrochemistry , composite material , physics , chromatography , organic chemistry , mechanical engineering , medicine , quantum mechanics , engineering , endocrinology
The limiting current density of a conventional polymer electrolyte (PS-PEO/LiTFSI) and a single-ion-conducting polymer electrolyte (PSLiTFSI-PEO) was measured using a new approach based on the fitted slopes of the potential obtained from lithium-polymer-lithium symmetric cells at a constant current density. The results of this method were consistent with those of an alternative framework for identifying the limiting current density taken from the literature. We found the limiting current density of the conventional electrolyte is inversely proportional to electrolyte thickness as expected from theory. The limiting current density of the single-ion-conducting electrolyte was found to be independent of thickness. There are no theories that address the dependence of the limiting current density on thickness for single-ion-conducting electrolytes.