Improved rate capability in a high-capacity layered cathode material via thermal reduction

Ali Abouimrane, Owen C. Compton, Haixia Deng, Ilias Belharouak, Dimtriy A. Dikin, Sonbinh T. Nguyen, Khalil Amine

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

Thermal treatment of the high-capacity integrated-structure cathode material Li2MnO3-LiMO2 (M Mn, Ni, and Co) under a reductive H2 atmosphere was investigated as a means to improve its rate capability when incorporated into a Lithium-ion battery (LIB). The heat-treated electrode, with a composition of Li1.12Mn 0.55Ni0.145Co0.1O2, shows a better coulombic charge-discharge efficiency and a good cycleability than the pristine material. This improvement can be attributed to a reduction in the valence of some Mn ions from 4 to 3, as monitored by X-ray photoelectron spectroscopy.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume14
Issue number9
DOIs
Publication statusPublished - 18 Jul 2011
Externally publishedYes

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Cathodes
cathodes
electric batteries
ions
X ray photoelectron spectroscopy
lithium
Heat treatment
photoelectron spectroscopy
Ions
valence
atmospheres
heat
Electrodes
electrodes
Chemical analysis
x rays
Hot Temperature
Lithium-ion batteries

ASJC Scopus subject areas

  • Electrochemistry
  • Electrical and Electronic Engineering
  • Materials Science(all)
  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

Improved rate capability in a high-capacity layered cathode material via thermal reduction. / Abouimrane, Ali; Compton, Owen C.; Deng, Haixia; Belharouak, Ilias; Dikin, Dimtriy A.; Nguyen, Sonbinh T.; Amine, Khalil.

In: Electrochemical and Solid-State Letters, Vol. 14, No. 9, 18.07.2011.

Research output: Contribution to journalArticle

Abouimrane, Ali ; Compton, Owen C. ; Deng, Haixia ; Belharouak, Ilias ; Dikin, Dimtriy A. ; Nguyen, Sonbinh T. ; Amine, Khalil. / Improved rate capability in a high-capacity layered cathode material via thermal reduction. In: Electrochemical and Solid-State Letters. 2011 ; Vol. 14, No. 9.
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