Identification of LiNi0.5Mn1.5O4 spinel in layered manganese enriched electrode materials

Ilias Belharouak, Gary M. Koenig, Jiwei Ma, D. P. Wang, Khalil Amine

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

We report the synthesis and characterization of the composite materials Li1 + x(Ni0.25Mn0.75)O2.25 + x/2 and Li1 + x(Ni0.25Co0.125Mn0.625)O 2.19 + x/2 (x = 0.25, 0.375, 0.5, and 0.625) via a solid-state reaction. XRD patterns and electrochemical cycling of the materials in lithium cells revealed features consistent with the presence of the high voltage spinel LiNi0.5Mn1.5O4 phase within the materials, which diminished with increasing relative lithium compositions. The cobalt-containing materials had less evidence of a spinel phase than the cobalt-free materials of equivalent relative lithium to transition metal compositions. The results presented herein provide evidence that the additional XRD features were correlated with the presence of the LiNi0.5Mn 1.5O4 phase within these materials.

Original languageEnglish
Pages (from-to)232-236
Number of pages5
JournalElectrochemistry Communications
Volume13
Issue number3
DOIs
Publication statusPublished - 1 Mar 2011
Externally publishedYes

Fingerprint

Manganese
Electrodes
Lithium
Cobalt
Chemical analysis
Solid state reactions
Transition metals
spinell
Composite materials
Electric potential

Keywords

  • Composite materials
  • LiMnO
  • Lithium-ion electrodes
  • Spinel

ASJC Scopus subject areas

  • Electrochemistry

Cite this

Identification of LiNi0.5Mn1.5O4 spinel in layered manganese enriched electrode materials. / Belharouak, Ilias; Koenig, Gary M.; Ma, Jiwei; Wang, D. P.; Amine, Khalil.

In: Electrochemistry Communications, Vol. 13, No. 3, 01.03.2011, p. 232-236.

Research output: Contribution to journalArticle

Belharouak, Ilias ; Koenig, Gary M. ; Ma, Jiwei ; Wang, D. P. ; Amine, Khalil. / Identification of LiNi0.5Mn1.5O4 spinel in layered manganese enriched electrode materials. In: Electrochemistry Communications. 2011 ; Vol. 13, No. 3. pp. 232-236.
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AU - Amine, Khalil

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