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First principles study of Li diffusion in I-Li2NiO2 structure
Cited 55 time in
Web of Science
Cited 59 time in Scopus
- Authors
- Issue Date
- 2009-01
- Publisher
- American Physical Society
- Citation
- Physical Review B, Vol.79 No.1, p. 014305
- Abstract
- First principles computations have been used to study Li mobility in the orthorhombic Li2NiO2 structure with the Immm space group (I-Li2NiO2). Understanding Li mobility in I-Li2NiO2 structure other than the conventional layered structure helps extend our understanding of Li transport in different oxide structures. Our results indicate that I-Li2NiO2 is a reasonably good lithium ionic conductor with two-dimensional diffusion when the structure is maintained upon lithiation or delithaion. It is predicted that in the orthorhombic cell the activation barriers along the b axis and diagonal direction between a and b axes are fairly low, ensuring the facile lithium diffusion along those directions, while migration along the a axis is unlikely given the very high activation barrier (similar to 2 eV).
- ISSN
- 2469-9950
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