Temperature Distribution in Li-ion Batteries

Objective: To develop a numerical tool for lithium-ion batteries validated using experimental data


Summary: Owing to their large gravimetric and volumetric energy densities, large-format prismatic Li-ion cells are becoming ubiquitous in civilian vehicle applications and are also under consideration for heavy military vehicle hybridization and robotic platforms. In prismatic cells, electro-thermal coupling of the in-plane distributions of temperature and current density have also been shown to cause self-heating, which can lead to the onset of thermal instability. Two-dimensional simulations have also shown that instabilities occur under specific local perturbations or boundary conditions. Temperature within a cell can increase due to poor heat transfer at cell edges, or because heat transfer is slowed by local changes in properties such as electric conductivity, reaction rate constants, or thermal conductivity that occur as the distributions of temperature or electrolyte content vary. Under certain conditions (say, if electric conductivity rises with temperature as thermal conductivity stays constant) constructive feedback can develop, causing a potentially catastrophic "thermal runaway" situation where temperature rises without bound. For this research, we derived an analytic solution using porous electrode theory (Newman & Tobias model) and global thermal energy balance with thermodynamic analysis in 1-D geometry. After that, we compared the analytic solution with numerical result from COMSOL (PDE solver).

We have designed an experimental setup inside a thermal chamber to control ambient temperature to measure temperature profiles when cycling the battery. Using an IR camera to track surface temperature we should be able to determine the physical properties of the system using our numerical tool generated in 3-D in COMSOL.

An A123 20 Ah cell and IR Camera used for the experiment.

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Recent News

April, 2017

Saber gave a talk at the ACS Conference in San Francisco, California.
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April, 2017

James gave a talk at the ACS Conference in San Francisco, California.
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May, 2017

Saber gave a talk at the ECS Conference in New Orleans, Louisiana.
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May, 2017

James gave a talk at the ECS Conference in New Orleans, Louisiana.
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October, 2016

Priyam gave a talk, "Models to Couple Mechanics and Electrochemical Transport in Solid Electrolytes," at the 230th ECS Meeting in Honolulu, Hawaii.

October, 2016

Howie gave a talk, "Electrochemical-Thermal Characterization and Modeling of Large Format Prismatic Lithium Ion Batteries," at the 230th ECS Meeting in Honolulu, Hawaii.

August, 2016

Priyam gave a talk, "Coupling of Material, Charge, and Momentum Transport in Liquid and Solid Electrolytes," at the 67th International Society of Electrochemistry in The Hague, Netherlands.

June, 2016

James gave a talk, "Towards Symmetric All-Organic Redox Flow Batteries," at the IFBF 2016 Conference in Karlsruhe, Germany.

June, 2016

Prof. Monroe gave a talk, "Coupling of Mechanical and Transport Phenomena in Ionomers," at the 229th ECS Meeting in San Diego, California.

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Recent Publications

  • G. Vardar, J.G. Smith, T. Thompson, K. Inagaki, J. Naruse, H. Hiramatsu, A.E.S. Sleightholme, J. Sakamoto, D.J. Siegel, C.W. Monroe, "Mg/O2 Battery Based on the Magnesium–Aluminum Chloride Complex (MACC) Electrolyte," Chem. Mater 28 (2016), 7629-7637.

  • J. Liu, S.K. Rahimian, C.W. Monroe, "Capacity-limiting mechanisms in Li/O2 batteries," Phys. Chem. Chem. Phys. 18 (2016), 22840-22851.

  • A.F. Chadwick, G. Vardar, S. DeWitt, A.E.S. Sleightholme, C.W. Monroe, D.J. Siegel, K. Thornton, "Computational Model of Magnesium Deposition and Dissolution for Property Determination via Cyclic Voltammetry," J. Electrochem. Soc. 163 (2016), A1813-A1821.

  • A.M. Bizeray, D.A. Howey, C.W. Monroe, "Resolving a Discrepancy in Diffusion Potentials, with a Case Study for Li-Ion Batteries," J. Electrochem. Soc. 163 (2016), E223-E229.

  • J.D. Saraidaridis, B.M. Bartlett, C.W. Monroe, "Spectroelectrochemistry of Vanadium Acetylacetonate and Chromium Acetylacetonate for Symmetric Nonaqueous Flow Batteries," J. Electrochem. Soc. 163 (2016), A1239-A1246.

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