On the Coupling Between Stress and Voltage in Lithium Ion Pouch Cells

  title={On the Coupling Between Stress and Voltage in Lithium Ion Pouch Cells},
  author={John Cannarella and Collen Z. Leng and Craig B. Arnold},
This paper studies the coupling between stress and open circuit voltage in a commercial lithium-ion pouch cell. This coupling is characterized through measurements of a coupling factor, which is defined as the rate of change in voltage with respect to applied mechanical stress. Based on a simple thermodynamic model, this coupling factor is expected to be related to the expansion characteristics of the pouch cell during charging. The expansion characteristics of the pouch cell are compared with… CONTINUE READING

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