Limitations of Li-Ion Pouch Cells for Accelerated Testing and Long-Lifetime Cells
Li-ion pouch cells that have experienced long-term accelerated testing at extreme temperatures have exhibited electrolyte permeation through the seals of the pouch bag, leading to eventual cell failure due to electrolyte unwetting and impedance growth. Degradation of the pouch bag material is also noticed. The permeation rate follows an Arrhenius-type behavior that can be substantial at high temperatures (35 wt% y −1 at 70 °C). The rate is indicated to be dependent on the volatility of the electrolyte solvent. Electrolyte loss can be mitigated by applying high-temperature epoxy sealant on the seals of the cell or by switching the form factor of the cell to metallic cylindrical.
Authors
- Claire Floras (ORCID: https://orcid.org/0009-0001-7472-9828)
- Jessie Harlow (ORCID: https://orcid.org/0000-0002-3928-2573)
- J. R. Dahn (ORCID: https://orcid.org/0000-0002-6997-2436)
- S.H. Chisholm
- Anu Adamson (ORCID: https://orcid.org/0000-0003-3679-7755)
- Michel B. Johnson (ORCID: https://orcid.org/0000-0001-6445-2813)
- Tina Taskovic (ORCID: https://orcid.org/0000-0001-9664-9290)
- Kenneth Tuul (ORCID: https://orcid.org/0000-0002-9111-7938)
- Divya Rathore (ORCID: https://orcid.org/0000-0003-2909-7726)
- Rasmus Palm (ORCID: https://orcid.org/0000-0002-1129-9234)
- W. A. P. Black (ORCID: https://orcid.org/0009-0006-3670-5346)
- Saad Azam (ORCID: https://orcid.org/0009-0000-1561-5022)
- Sasha Martin-Maher
Publication Details
- Journal
- Journal of The Electrochemical Society
- Published
- 2025-02-01
- DOI
- https://doi.org/10.1149/1945-7111/adb217
- Citations
- 4
- Primary Topic
- Advanced Battery Technologies Research
- Type
- article
- Field-Weighted Citation Impact
- 2.73