Electrochemical lithiation-induced formation of disordered rocksalt †

Leesmith, Matthew J. A. and Halcovitch, Nathan R. and Hua, Xiao (2023) Electrochemical lithiation-induced formation of disordered rocksalt †. Journal of Materials Chemistry A, 11 (32). pp. 17027-17034. ISSN 2050-7488

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Abstract

Cation disordered rocksalt (DRX) materials are promising electrode alternatives for next-generation battery technology due to their superior performances concerning capacity and rate capability. These materials are usually prepared via heat treatment or mechanochemical synthesis. Recently, several cation DRX oxides with desirable cycling behaviours have been prepared through electrochemical lithiation of a series of binary metal oxides that have a non-fcc oxygen sublattice. Capitalising on these findings, we strategically investigated two Mn oxides with unique oxygen structures. Through an analysis combining X-ray diffraction and pair distribution function techniques, an electrochemically active cation DRX phase was identified in both oxides upon electrochemical lithiation. Jointly with the earlier reports, our new findings constitute empirical evidence pointing to a general principle that underpins the electrochemical DRX transformation, opening up new opportunities for the development of higher energy density batteries.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Materials Chemistry A
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2100/2105
Subjects:
?? renewable energy, sustainability and the environmentgeneral materials sciencegeneral chemistrymaterials science(all)chemistry(all) ??
ID Code:
200493
Deposited By:
Deposited On:
04 Aug 2023 16:05
Refereed?:
Yes
Published?:
Published
Last Modified:
19 Jul 2024 09:45