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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!
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