作者: Neil S. Spinner , Corey T. Love , Susan L. Rose-Pehrsson , Steven G. Tuttle
DOI: 10.1016/J.ELECTACTA.2015.06.003
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摘要: Abstract Instantaneous internal temperature monitoring of a commercial 18650 LiCoO2 lithium-ion battery was performed using single-point EIS measurement. A correlation between the imaginary impedance, –Zimag, and at 300 Hz developed that independent battery’s state charge. An Arrhenius-type dependence applied, activation energy for SEI ionic conductivity found to be 0.13 eV. Two separate temperature-time experiments were conducted with different sequences temperature, impedance tests validate correlation. Limitations observed upper range (68°C