Alloying effects on superionic conductivity in lithium indium halides for all-solid-state batteries
- Georgetown Univ., Washington, DC (United States); San Francisco State Univ., CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- San Francisco State Univ., CA (United States)
Alloying of anions is a promising engineering strategy for tuning ionic conductivity in halide-based inorganic solid electrolytes. We explain the alloying effects in Li3InBr6-xClx, in terms of strain, chemistry, and microstructure, using first-principles molecular dynamics simulations and novel electronic structure analysis. We find that strain and bond chemistry can be tuned through alloying and affect the activation energy and maximum diffusivity coefficient. The similar conductivities of the x=3 and x=6 compositions can be understood by assuming the alloy separates into Brrich and Cl-rich regions. Phase-separation increases diffusivity at the interface and in the expanded Cl-region, suggesting microstructure effects are critical.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344; 15-ERD-022
- OSTI ID:
- 1463832
- Alternate ID(s):
- OSTI ID: 1422837
- Report Number(s):
- LLNL-JRNL-740955; 895123
- Journal Information:
- APL Materials, Vol. 6, Issue 4; ISSN 2166-532X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Enhancing sodium ionic conductivity in tetragonal-Na 3 PS 4 by halogen doping: a first principles investigation
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journal | January 2018 |
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