Synthesis of Li1.20Mn0.432+Nb0.39O2 disordered rock-salt under reducing conditions for Li-ion batteries

Wilgner Lima da Silva; Ashok S Menon; Martin R Lees; Reza J Kashtiban; Marc Walker; Louis F J Piper; Emma Kendrick; Richard I Walton

doi:10.1039/d3cc04264b

Synthesis of Li_1.20Mn_0.43²⁺Nb_0.39O₂ disordered rock-salt under reducing conditions for Li-ion batteries

Chem Commun (Camb). 2023 Nov 9;59(90):13502-13505. doi: 10.1039/d3cc04264b.

Authors

Wilgner Lima da Silva^{1

2}, Ashok S Menon², Martin R Lees³, Reza J Kashtiban³, Marc Walker³, Louis F J Piper², Emma Kendrick⁴, Richard I Walton¹

Affiliations

¹ Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK. r.i.walton@warwick.ac.uk.
² WMG, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
³ Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
⁴ School of Metallurgy and Materials, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK. e.kendrick@bham.ac.uk.

PMID: 37882454
DOI: 10.1039/d3cc04264b

Abstract

A Mn²⁺-Li-Nb disordered rock-salt oxide cathode is prepared by a solid-state reaction under 5% H₂/N₂, and its electrochemical property shows a high voltage plateau at 4.8 V, with irreversible structural changes in the 1st cycle due to O redox processes; this is supported by powder X-ray diffraction and ex situ laboratory Mn K-edge XANES data.