Issue 5, 2024

A methodology to synthesize easily oxidized materials containing Li ions in an inert atmosphere

Abstract

A series of lithium-containing oxides with V3+ and Mn3+ ions are proposed as emerging high-capacity positive electrode materials for lithium-ion batteries. These oxides are typically synthesized by a calcination process in an inert atmosphere. For the successful synthesis of these materials, the strict control of oxygen partial pressure is necessary to prevent partial oxidation of materials during calcination. In this article, a simple methodology used in laboratory-scale material production, i.e., an oxygen trap by Cu foil, is described to synthesize phase pure oxides, which are easily oxidized on calcination. To demonstrate the benefit of the methodology, Li8/7Ti2/7V4/7O2 and Li8/7Ti2/7Mn4/7O2 are selected as lithium-containing oxides with V3+ and Mn3+ ions, respectively. Single phase oxides are successfully obtained from the pellets calcined with Cu foil, whereas partially oxidized phases are obtained for the pellets calcined without Cu foil. Moreover, phase-pure oxides synthesized with Cu foil show much better performance as positive electrode materials for battery applications. This methodology is also expected to be applied for material synthesis for diverse applications.

Graphical abstract: A methodology to synthesize easily oxidized materials containing Li ions in an inert atmosphere

Supplementary files

Article information

Article type
Communication
Submitted
09 feb 2024
Accepted
14 apr 2024
First published
15 apr 2024
This article is Open Access
Creative Commons BY license

Energy Adv., 2024,3, 962-967

A methodology to synthesize easily oxidized materials containing Li ions in an inert atmosphere

I. Konuma, Y. Ugata and N. Yabuuchi, Energy Adv., 2024, 3, 962 DOI: 10.1039/D4YA00089G

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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