Understanding effects of electrolyte concentration polarization on battery performance at low temperature
Abstract
Li-ion batteries have been widely used as a power source due to their high energy density, high power density, and long cycle life. However, they perform poorly at low temperatures (e.g., -60 - -10 oC), limiting their applications in aerospace, satellites, and electric vehicles in cold climates. The inferior performance of Li-ion batteries at low temperatures mainly arises from the low electrolyte conductivity and the sluggish charge transfer at the electrode-electrolyte interface. While substantial studies have focused on improving these properties, little attention has been paid to the effects of electrolyte concentration polarization (ECP), since it is difficult to probe and not pronounced in cells with small mass loading and high porosity, which is often used in the academic setting. However, ECP could be significant in operating commercial batteries with a high mass loading (e.g., ~3-5 mAh-cm2) and low porosity.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2025
- Source ID
- FA95502510009
Entities
People
- Yuan Yang
Organizations
- Air Force Office of Scientific Research
- Trustees of Columbia University in the City of New York
- United States Air Force