Analysis of electrochemical and thermal behavior of Li-ion cells

Venkat Srinivasan, C. Y. Wang

Research output: Contribution to journalArticle

278 Citations (Scopus)

Abstract

This paper seeks to gain a better understanding of the thermal behavior of Li-ion cells using a previously developed two-dimensional, first principles-based thermal-electrochemical modeling approach. The model incorporates the reversible, irreversible, and ohmic heats in the matrix and solution phases, and the temperature dependence of the various transport, kinetic, and mass-transfer parameters based on Arrhenius expressions. Experimental data on the entropic contribution for the manganese oxide spinal and carbon electrodes, recently published in the literature, are also incorporated into the model in order to gauge the importance of this term in the overall heat generation. Simulations were used to estimate the thermal and electrical energy and the active material utilization at various rates in order to understand the effect of temperature on the electrochemistry and vice versa. In addition, the methodology of using experimental data, instead of an electrochemical model, to determine the heat-generation rate is examined by considering the differences between the focal and lumped thermal models, and the assumption of using heat generation rate determined at a particular thermal environment under other conditions. Model simulations are used to gain insight into the appropriateness of various approximations in developing comprehensive thermal models for Li-ion cells.

Original languageEnglish (US)
Pages (from-to)A98-A106
JournalJournal of the Electrochemical Society
Volume150
Issue number1
DOIs
StatePublished - Jan 1 2003

Fingerprint

Ions
heat generation
cells
Heat generation
ions
thermal environments
manganese oxides
electrochemistry
electric power
Manganese oxide
thermal energy
Electrochemistry
mass transfer
Hot Temperature
Gages
simulation
methodology
Carbon
Mass transfer
heat

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

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Analysis of electrochemical and thermal behavior of Li-ion cells. / Srinivasan, Venkat; Wang, C. Y.

In: Journal of the Electrochemical Society, Vol. 150, No. 1, 01.01.2003, p. A98-A106.

Research output: Contribution to journalArticle

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