In situ synchrotron wide-angle X-ray scattering study on rapid lithiation of graphite anode via direct contact method for Li-ion capacitors

Hyunchul Park, Minho Kim, Fan Xu, Cheolsoo Jung, Soon Man Hong, Chong Min Koo

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Lithium pre-doping of graphite anode is a key process to achieve high energy density lithium-ion capacitor. In this study, in situ synchrotron wide-angle X-ray scattering examinations directly revealed that the direct contact (DC) method, simply achieved through direct physical contact between graphite electrode and sacrificial lithium metal in electrolyte, provides much faster phase transformation from stage 1 to stage 1 than conventional electronic charger (EC) and external short circuit (ESC) methods at the same doping time level. The observations indicate that DC method achieves faster pre-lithiation rate of graphite electrode than EC and ESC processes.

Original languageEnglish
Pages (from-to)68-73
Number of pages6
JournalJournal of Power Sources
Volume283
DOIs
Publication statusPublished - 2015 Jun 1
Externally publishedYes

Keywords

  • Graphite lithiation
  • In situ synchrotron wide-angle
  • Lithium ion capacitor
  • X-ray scattering

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'In situ synchrotron wide-angle X-ray scattering study on rapid lithiation of graphite anode via direct contact method for Li-ion capacitors'. Together they form a unique fingerprint.

  • Cite this