A new solid-state process for synthesis of LiMn1.5Ni0.5O4-δ spinel

Nader Marandian Hagh, Glenn G. Amatucci

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

A new two-step solid-state process was developed for synthesis of a pure phase 4.7 V LiMn1.5Ni0.5O4-δ (LMNO) spinel of good electrochemical properties. This process which was based on formation of stable Ni1-xMn2O4-δ (x ≤ 0.33) spinel followed by subsequent lithiation, demonstrated the emerging of LiMn1.5Ni0.5O4-δ frame work at temperatures of as low as 350 °C. During this lithiation process, migration of metal ions (Ni/Mn) from partially occupied tetrahedral 8a sites (in Ni0.67Mn2O4-δ) toward octahedral 16d site occurred. The resultant spinel material displayed low irreversible loss, a 97% columbic efficiency and 6% loss in discharge capacity after 100 cycles at 60 °C.

Original languageEnglish (US)
Pages (from-to)5005-5012
Number of pages8
JournalJournal of Power Sources
Volume195
Issue number15
DOIs
StatePublished - Aug 1 2010

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

Keywords

  • High voltage cathode
  • Lithiation
  • Nickel manganese oxide
  • Solid-state synthesis
  • Spinel

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