Pressure effects on lithium anode/nickel-manganese-cobalt oxide cathode pouch cells through fixture design
- Idaho National Laboratory (INL), Idaho Falls, ID (United States); Boise State Univ., ID (United States)
- Univ. of Connecticut, Storrs, CT (United States)
- Stony Brook Univ., NY (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
- Boise State Univ., ID (United States)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Applying external pressure to a pouch cell results in improved performance, implicating systems-level design of batteries. Here, different formats and amounts of external pressure to Li-LixNi0.8Mn0.1Co0.1O2 (Li-NMC811) pouch cells were studied under lean electrolyte conditions. Due to the more uniform lithium plating/stripping, a constant gap fixture that retains the distance of the frame during cycling performed greater than a constant pressure fixture that retains applied pressure to the cell. In addition, the use of flexible foam in a constant gap fixture revealed enhanced cycle life at 10 psi; however, at 30 psi, the use of a rigid plate extended cycle life to over 250 cycles, while the foam severely shortened cycle life. This discrepancy with pressure was proven to be driven by stress distribution on cell components. The failure mechanisms and the effects of pressure fixture design on cell components were unveiled, shedding light on improving high-energy battery performance through at-scale fixture design.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- National Institutes of Health (NIH); National Science Foundation (NSF); USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (VTO). Advanced Battery Materials Research Program; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- Grant/Contract Number:
- AC05-00OR22725; AC07-05ID14517; SC0012704
- OSTI ID:
- 2503542
- Report Number(s):
- BNL--228177-2025-JAAM
- Journal Information:
- Device, Journal Name: Device Journal Issue: 4 Vol. 3; ISSN 2666-9986
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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