Possibility of voltage prediction from the Coulomb potential created by the atoms of a cathode active material for Li ion cells

Jun Ichi Yamaki, Minato Egashira, Shigeto Okada

Research output: Contribution to journalConference article

Abstract

We studied the contribution of internal energy change to cathode voltage assuming that the cathode material was completely ionic and only the Coulomb potential was effective. From the internal energy change caused by one Li+ and one electron insertion, we derived a cathode voltage equation related to the Coulomb potential, which we calculated using a personal computer. We calculated the cathode voltage of an ideal structure LixMO2 (R3±m) (Li-O: 2A, Ni-O: 2A), which is a model compound of LixNiO2. From this calculation, we found that LixMO2 has a two-phase co-existence for 0<x<0.25, and one phase for 0.25<x<1.

Original languageEnglish
Pages (from-to)109-115
Number of pages7
JournalJournal of Power Sources
Volume90
Issue number1
DOIs
Publication statusPublished - Sep 1 2000
EventThe 1999 International Symposium on Rechargeable - Kyoto, Jpn
Duration: Nov 14 1999Nov 16 1999

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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

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