X-ray spectroscopy study of lithiated graphite obtained by thermal deposition of lithium

L. L. Lapteva, Yu V. Fedoseeva, P. N. Gevko, D. A. Smirnov, A. V. Gusel’nikov, L. G. Bulusheva, A. V. Okotrub

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

X-ray photoelectron spectroscopy (XPS), X-ray emission spectroscopy (XES), and near edge X-ray absorption fine structure (NEXAFS) spectroscopy are used for in situ studies of the electronic structure of lithiated natural graphite produced by thermal deposition of lithium upon graphite in a vacuum. By XPS and NEXAFS spectroscopy it is found that lithium vapor thermal deposition results in the formation of a lithiated graphite surface layer and a change in its electronic structure. Based on the quantum chemical simulation of the experimental СKα XES spectrum of lithiated graphite, it is found that lithium atoms are located mostly on the edges of graphite crystallites. Atomic force microscopy reveals that the size of natural graphite flakes varies from 50 nm to 200 nm.

Original languageEnglish
Pages (from-to)1173-1179
Number of pages7
JournalJournal of Structural Chemistry
Volume58
Issue number6
DOIs
Publication statusPublished - 1 Nov 2017

Keywords

  • lithiation
  • natural graphite
  • near edge X-ray absorption fine structure
  • quantum chemical simulation
  • thermal deposition
  • X-ray emission spectroscopy
  • X-ray photoelectron spectroscopy
  • ION BATTERIES
  • CARBON
  • GRAPHENE
  • INTERCALATION
  • DENSITY
  • 1ST-PRINCIPLES
  • EMISSION-SPECTROSCOPY
  • DIFFUSION
  • ELECTRONIC-STRUCTURE
  • PHOTOELECTRON-SPECTROSCOPY

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