Ion- and electron-transport properties of a single particle of disordered carbon during the lithium insertion reaction

Matsuhiko Nishizawa, Hiromichi Koshika, Ryuichi Hashitani, Takashi Itoh, Takayuki Abe, Isamu Uchida

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20 Citations (Scopus)

Abstract

The electrical de conductance (S) and the solid-state diffusion coefficient of the lithium ion (DLi+) were evaluated for a single spherical particle of mesocarbon microbead (MCMB) heat-treated at 1000°C. The measurements were conducted in situ during the electrochemical lithium insertion into the MCMB by using microelectrode-based techniques. The data obtained are discussed as functions of the electrode potential and of the amount of inserted lithium. Both parameters (S and DLi+) were found to depend on the lithium content, and their variation manner changed around 0.6 V vs Li/Li+ at which the inserted lithium amount was ca. 25% of the total insertion. The results would arise from the difference between the first and the second half of the lithium insertion reaction mechanisms.

Original languageEnglish
Pages (from-to)4934-4936
Number of pages3
JournalJournal of Physical Chemistry B
Volume103
Issue number24
Publication statusPublished - 1999 Jun 17

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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