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Identification and characterisation of high energy density P2-type Na2/3[Ni1/3−y/2Mn2/3−y/2Fey]O2 compounds for Na-ion batteries

Research output: Contribution to journalJournal article

E-pub ahead of print
  • James W. Somerville
  • Rob A House
  • Nuria Tapia-Ruiz
  • Adam Sobkowiak
  • Silvia Ramos
  • Alan V. Chadwick
  • Matthew R. Roberts
  • Urmimala Maitra
  • Peter G. Bruce
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<mark>Journal publication date</mark>26/02/2018
<mark>Journal</mark>Journal of Materials Chemistry
Publication statusE-pub ahead of print
Early online date26/02/18
Original languageEnglish

Abstract

The composition space between MnO2, NaFeO2, and Na[Ni1/2Mn1/2]O2 has been explored with the goal of identifying Earth-abundant single-phase P2 cathode materials. This has led to the identification of two compounds, P2-Na2/3[Ni1/3−y/2Mn2/3−y/2Fey]O2 (y = 1/6, 1/3) which exhibit state of the art specific energies. These materials were further evaluated through galvanostatic cycling and X-ray absorption spectroscopy.

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© Royal Society of Chemistry 2018