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Adoption of thermal behavior as an indicator for enhancement of the EIS analysis for NCR 18650B Commercial Lithium-ion batteries system

Published online by Cambridge University Press:  26 June 2018

Bo Dong*
Affiliation:
Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, United States.
Yige Li
Affiliation:
Mechanical Engineering, University of California, Riverside, Riverside, CA, United States.
Kazi Ahmed
Affiliation:
Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, United States.
Cengiz Sinan Ozkan
Affiliation:
Mechanical Engineering, University of California, Riverside, Riverside, CA, United States.
Mihrimah Ozkan
Affiliation:
Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, United States.
*
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Abstract

It is of great significance to understand and monitor the condition of the commercial batteries in EVs/HEVs and stationary applications under their real working situations. Electrochemical impedance spectroscopy (EIS) has been proved to be a powerful technique for investigating the kinetics and redox reactions at the interfaces, as well as the diffusion behavior in the bulks of every electrochemical systems. Focusing on tracing the temperature of the commercial batteries during the EIS tests at different stages in a well-designed four-week driving simulation, the value of temperature profile during the EIS test as an enhanced indicator to help analyzing the formation of the passivation layers, electrolyte impedance development as well as lithium plating on the anode through EIS analysis have been found.

Type
Articles
Copyright
Copyright © Materials Research Society 2018 

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References

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