Pressure-tailored lithium deposition and dissolution in lithium metal batteries
- University of California San Diego, La Jolla, CA (United States); Michigan State University, East Lansing, MI (United States); The University of Chicago, Pritzker School of Molecular Engineering
- University of California San Diego, La Jolla, CA (United States)
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- General Motors Research and Development Center, Warren, MI (United States)
- Michigan State University, East Lansing, MI (United States)
Unregulated lithium (Li) growth is the major cause of low Coulombic efficiency, short cycle life and safety hazards for rechargeable Li metal batteries. Strategies that aim to achieve large granular Li deposits have been extensively explored, and yet it remains a challenge to achieve the ideal Li deposits, which consist of large Li particles that are seamlessly packed on the electrode and can be reversibly deposited and stripped. In this work, we report a dense Li deposition (99.49% electrode density) with an ideal columnar structure that is achieved by controlling the uniaxial stack pressure during battery operation. Using multiscale characterization and simulation, we elucidate the critical role of stack pressure on Li nucleation, growth and dissolution processes and propose a Li-reservoir-testing protocol to maintain the ideal Li morphology during extended cycling. The precise manipulation of Li deposition and dissolution is a critical step to enable fast charging and a low-temperature operation for Li metal batteries.
- Research Organization:
- General Motors, LLC, Detroit, MI (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
- Grant/Contract Number:
- AC07-05ID14517; EE0008230
- OSTI ID:
- 1988591
- Alternate ID(s):
- OSTI ID: 1924796
- Journal Information:
- Nature Energy, Journal Name: Nature Energy Journal Issue: 10 Vol. 6; ISSN 2058-7546
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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