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Electrochemistry Coupled Mesoscale Complexations in Electrodes Lead to Thermo-Electrochemical Extremes.

Authors :
Mistry AN
Smith K
Mukherjee PP
Source :
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2018 Aug 29; Vol. 10 (34), pp. 28644-28655. Date of Electronic Publication: 2018 Aug 20.
Publication Year :
2018

Abstract

Thermo-electrochemical extremes continue to remain a challenge for lithium-ion batteries. Contrary to the conventional approach, we propose herein that the electrochemistry-coupled and microstructure-mediated cross talk between the positive and negative electrodes ultimately dictates the off-equilibrium-coupled processes, such as heat generation and the propensity for lithium plating. The active particle morphological differences between the electrode couple foster a thermo-electrochemical hysteresis, where the difference in heat generation rates changes the electrochemical response. The intrinsic asymmetry in electrode microstructural complexations leads to thermo-electrochemical consequences, such as cathode-dependent thermal excursion and co-dependent lithium plating otherwise believed to be anode-dependent.

Details

Language :
English
ISSN :
1944-8252
Volume :
10
Issue :
34
Database :
MEDLINE
Journal :
ACS applied materials & interfaces
Publication Type :
Academic Journal
Accession number :
30074772
Full Text :
https://doi.org/10.1021/acsami.8b08993