Volume 19, Issue 4 pp. 746-757
Personal Account

Development of Divide-and-Conquer Density-Functional Tight-Binding Method for Theoretical Research on Li-Ion Battery

Chien-Pin Chou

Chien-Pin Chou

Waseda Research Institute for Science and Engineering (WISE), Waseda University, Tokyo, 169-8555 Japan

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Aditya Wibawa Sakti

Aditya Wibawa Sakti

Element Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyotodaigaku-Katsura, Kyoto, 615-8520 Japan

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Yoshifumi Nishimura

Yoshifumi Nishimura

Waseda Research Institute for Science and Engineering (WISE), Waseda University, Tokyo, 169-8555 Japan

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Hiromi Nakai

Corresponding Author

Hiromi Nakai

Waseda Research Institute for Science and Engineering (WISE), Waseda University, Tokyo, 169-8555 Japan

Element Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyotodaigaku-Katsura, Kyoto, 615-8520 Japan

Department of Chemistry and Biochemistry, School of Advanced Science and Enigineering, Waseda University, Tokyo, 169-8555 Japan

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First published: 21 November 2018
Citations: 16

Abstract

The density-functional tight-binding (DFTB) method is one of the useful quantum chemical methods, which provides a good balance between accuracy and computational efficiency. In this account, we reviewed the basis of the DFTB method, the linear-scaling divide-and-conquer (DC) technique, as well as the parameterization process. We also provide some refinement, modifications, and extension of the existing parameters that can be applicable for lithium-ion battery systems. The diffusion constants of common electrolyte molecules and LiTFSA salt in solution have been estimated using DC-DFTB molecular dynamics simulation with our new parameters. The resulting diffusion constants have good agreement to the experimental diffusion constants.

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