Effect Of Intercalation Diffusivity When Simulating Mixed Electrode Materials In Li-Ion Batteries

Evelina Wiknerevelina.wikner@chalmers.se

Department of Electric Power EngineeringChalmers University of Technology

Evelina Wiknerevelina.wikner@chalmers.se

Department of Electric Power EngineeringChalmers University of Technology

10/10/2016 Chalmers 2

IMAGE SAMPLE

• Background• Physics based modeling• Mixed electrode material• Results• Conclusions

Outline

Photo: Volvo

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Background

Volvo Cars CorporationBattery SystemsTheresa Granérus

Henrik Markusson

ABB AB Corporate ResearchTomas Tengnér

Antonis Marinopoulos

Uppsala UniversityÅngström Advanced Battery CenterProf. Kristina Edstöm

Prof. Daniel Brandell

Erik Björklund

Chalmers University of TechnologyElectric Power EngineeringProf. Torbjörn Thiringer

Evelina Wikner

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• Aging mechanisms• Simulation of chosen mechanisms• Predict aging• Improve battery utilization

Funded by:

PhD project

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EXEMPELBILD• More then 80 parameters!• Difficult to measure several of the

parameters• Concentration and temperature

dependence

Physics based battery model

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• Higher complexity• More parameters • Higher impact of diffusion coefficient

Mixed electrode materials

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Results

4. P. C. Goonetilleke, J. P. Zheng and D. Roy,

“Effects of Surface-Film Formation on the

Electrochemical Characteristics of LiMn2O4 Cathodes of Lithium Ion Batteries”, Journal of the

Electrochemical Society, vol. 156, pp. A709-A719 (2009)

5. Wu, Shao-Ling, Wei Zhang, Xiangyun Song,

Alpesh K. Shukla, Gao Liu, Vincent S. Battaglia, and Venkat Srinivasan, High Rate Capability of

Li(Ni1/3Mn1/3Co1/3)O2 Electrode for Li-Ion Batteries, Journal of the Electrochemical Society,

vol. 159 , pp. A438-A444 (2012)

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Results

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Results

4. P. C. Goonetilleke, J. P. Zheng and D. Roy,

“Effects of Surface-Film Formation on the

Electrochemical Characteristics of LiMn2O4 Cathodes of Lithium Ion Batteries”, Journal of the

Electrochemical Society, vol. 156, pp. A709-A719 (2009)

5. Wu, Shao-Ling, Wei Zhang, Xiangyun Song,

Alpesh K. Shukla, Gao Liu, Vincent S. Battaglia, and Venkat Srinivasan, High Rate Capability of

Li(Ni1/3Mn1/3Co1/3)O2 Electrode for Li-Ion Batteries, Journal of the Electrochemical Society,

vol. 159 , pp. A438-A444 (2012)

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Results

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• Special care needs to be taken when simulating mixed electrode materials.

• The diffusion coefficient’s concentration dependence should not be neglected.

• The model can be used to find optimal mix of two electrode materials.

Conclusions

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Thank you for your attention!