Soft X-ray Li-K and Si-L 2,3 emission from crystalline and amorphous lithium silicides in lithium-ion batteries anode

Andrey Lyalin, Vladimir G. Kuznetsov, Akira Nakayama, Igor V. Abarenkov, Ilya I. Tupitsyn, Igor E. Gabis, Kohei Uosaki, Tetsuya Taketsugu

Research output

1 Citation (Scopus)

Abstract

Soft X-ray Li-K and Si-L 2,3 emission spectra of crystalline and amorphous lithium silicides Li 13 Si 4 and Li 15 Si 4 forming upon electrochemical lithiation of silicon anode in lithium-ion batteries (LIBs) have been investigated theoretically. It is shown that shape and energy position of X-ray emission bands can be used for determination of the chemical structure and composition of the electrochemically lithiated silicon, while the intensities of Li-K and Si-L 2,3 bands provide information on Li concentration. It is demonstrated that theoretical methods of soft X-ray emission spectroscopy (XES) can be used as a powerful tool for the detailed analysis of the electronic and structural properties of Li-Si alloys in LIBs.

Original languageEnglish
Pages (from-to)A5362-A5368
JournalJournal of the Electrochemical Society
Volume166
Issue number3
DOIs
Publication statusPublished - 19 Jan 2019

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Renewable Energy, Sustainability and the Environment

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