On the cycle behavior of various graphitic negative electrodes in a propylene carbonate-based electrolyte for lithium ion batteries

Minato Egashira, Shigeto Okada, Jun ichi Yamaki

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We investigated the negative electrode behaviors of several mesocarbon microbeads (MCMB) heat-treated over 2000 °C in 1M LiPF 6/propylene carbonate (PC) electrolyte under various charge-discharge current densities. A higher current density provided improved (a highly graphitized MCMB)/Li cell cycle stability as lower graphitized MCMB electrode was used. In addition, two pre-cycles at a higher current density also provided better cycle stability in subsequent cycles at a lower current density. For example, MCMB 6μm in diameter and heat-treated at 2800 °C cycled stably at a current density of 0.2mA cm-2 after 2 pre-cycles at 0.5mA cm-2. A higher current density may provide an adequate surface film at the first charging.

Original languageEnglish
Pages (from-to)237-240
Number of pages4
JournalJournal of Power Sources
Volume124
Issue number1
DOIs
Publication statusPublished - Oct 1 2003

All Science Journal Classification (ASJC) codes

  • 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 'On the cycle behavior of various graphitic negative electrodes in a propylene carbonate-based electrolyte for lithium ion batteries'. Together they form a unique fingerprint.

  • Cite this