Computational evaluation of new lithium-3 garnets for lithium-ion battery applications as anodes, cathodes, and solid-state electrolytes
- Northwestern Univ., Evanston, IL (United States)
In this work, we explore a set of new garnet oxide structures that can be used as an anode, cathode or solid-electrolyte in lithium-ion batteries (LIBs) using high-throughput density functional theory. Specifically, we tested around 180 combinations of elemental substitutions for the dodecahedral X sites and octahedral Y sites in the Li3X3Y2O12 type garnet structure and identified 19 stable (i.e., on the convex hull) and 11 nearly stable (i.e., within 50 meV/atom of the convex hull) Li3 garnets with respect to decomposition to other stable phases in the Open Quantum Materials Database in the respective four-dimensional Li-X-Y -O chemical spaces. Our high-throughput screening strategy allows us to elucidate rules for garnet stability in terms of the ionic radii of the constituent elements. We evaluated the electrochemical window of these new, stable/nearly stable Li3-garnet compounds and classify each for potential applications as an anode, cathode, or solid-state electrolyte to be used in LIBs. Finally, Li+ ion diffusivity is calculated for the representative Li3Nd3W2O12 model system. The results we present here are expected to serve as a guideline for designing new garnet oxides for Li-ion battery applications.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Electrical Energy Storage (CEES); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Organization:
- National Institute of Standards and Technology (NIST); US Department of Commerce; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-05CH11231; AC02-06CH11357; SC0015106
- OSTI ID:
- 1544121
- Journal Information:
- Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 2 Vol. 3; ISSN 2475-9953
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Computational screening of anode materials for potassium‐ion batteries
|
journal | August 2019 |
High-throughput computational screening for solid-state Li-ion conductors
|
journal | January 2020 |
| High-throughput computational screening for solid-state Li-ion conductors | text | January 2019 |
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