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Proceedings Article

On the coupling between stress and voltage in lithium-ion pouch cells

[+] Author Affiliations
John Cannarella, Collen Z. Leng, Craig B. Arnold

Princeton Univ. (United States)

Proc. SPIE 9115, Energy Harvesting and Storage: Materials, Devices, and Applications V, 91150K (June 5, 2014); doi:10.1117/12.2055152
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From Conference Volume 9115

  • Energy Harvesting and Storage: Materials, Devices, and Applications V
  • Nibir K. Dhar; Palani Balaya; Achyut K. Dutta
  • Baltimore, Maryland, USA | May 05, 2014

abstract

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 measurements of the coupling factors at different states of charge, and are found to be in agreement with the simple thermodynamic model. This work opens the door for the development of mechanical force sensors based on intercalation materials. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Topics

Lithium ; Sensors
Citation

John Cannarella ; Collen Z. Leng and Craig B. Arnold
" On the coupling between stress and voltage in lithium-ion pouch cells ", Proc. SPIE 9115, Energy Harvesting and Storage: Materials, Devices, and Applications V, 91150K (June 5, 2014); doi:10.1117/12.2055152; http://dx.doi.org/10.1117/12.2055152


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