Short-range ordering in a battery electrode, the ‘cation-disordered’ rocksalt Li1.25Nb0.25Mn0.5O2

Michael A. Jones; Philip J. Reeves; Ieuan D. Seymour; Matthew J. Cliffe; Siân E. Dutton; Clare P. Grey

doi:10.1039/C9CC04250D

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Short-range ordering in a battery electrode, the ‘cation-disordered’ rocksalt Li_1.25Nb_0.25Mn_0.5O₂†

Michael A. Jones,

^a Philip J. Reeves,

^a Ieuan D. Seymour,‡^a Matthew J. Cliffe,

^b Siân E. Dutton

*^c and Clare P. Grey*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK
E-mail: cpg27@cam.ac.uk

^b School of Chemistry, University of Nottingham, University Park, Nottingham, UK

^c Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge, UK
E-mail: sed33@cam.ac.uk

Abstract

Cation order, with a local structure related to γ-LiFeO₂, is observed in the nominally cation-disordered Li-excess rocksalt Li_1.25Nb_0.25Mn_0.5O₂via X-ray diffraction, neutron pair distribution function analysis, magnetic susceptibility and NMR spectroscopy. The correlation length of ordering depends on synthesis conditions and has implications for the electrochemistry of these phases.

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Article information

DOI: https://doi.org/10.1039/C9CC04250D
Article type: Communication
Submitted: 03 Jun 2019
Accepted: 02 Jul 2019
First published: 04 Jul 2019

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Chem. Commun., 2019,55, 9027-9030

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Short-range ordering in a battery electrode, the ‘cation-disordered’ rocksalt Li_1.25Nb_0.25Mn_0.5O₂

M. A. Jones, P. J. Reeves, I. D. Seymour, M. J. Cliffe, S. E. Dutton and C. P. Grey, Chem. Commun., 2019, 55, 9027 DOI: 10.1039/C9CC04250D

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