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

Kandler Smith, Aashutosh Mistry, Partha Mukherjee

Research output: Contribution to journalArticlepeer-review

49 Scopus Citations

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.

Original languageAmerican English
Pages (from-to)28644-28655
Number of pages12
JournalACS Applied Materials and Interfaces
Volume10
Issue number34
DOIs
StatePublished - 2018

Bibliographical note

Publisher Copyright:
© 2018 American Chemical Society.

NREL Publication Number

  • NREL/JA-5400-72305

Keywords

  • electrode microstructure
  • heat generation
  • lithium plating
  • particle morphology
  • secondary phase
  • thermo-electrochemical hysteresis

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