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

Konuma, Itsuki; Ugata, Yosuke; Yabuuchi, Naoaki

doi:10.1039/d4ya00089g

Energy Adv.

2024

DOI: 10.1039/d4ya00089g

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

Itsuki Konuma,

Yosuke Ugata,

Naoaki Yabuuchi

Abstract: A series of lithium-containing oxides with V3+ and Mn3+ ions is proposed as emerging high-capacity positive electrode materials for lithium-ion batteries. These oxides are typically synthesized by a calcination process...

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Cited by 2 publications

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A Practical and Sustainable Ni/Co-Free High-Energy Electrode Material: Nanostructured LiMnO₂

Miyaoka,

Sato,

Oguro

et al. 2024

ACS Cent. Sci.

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Ni/Co-free high-energy positive electrode materials are of great importance to ensure the sustainability of Li-ion battery production and its supply chain in addition to minimizing environmental impact. Here, nanostructured LiMnO 2 with both orthorhombic/monoclinic layered domains is synthesized, and its lithium storage properties and mechanism are examined. High-energy mechanical milling is used to convert the metastable and nanosized LiMnO 2 adopting the cationdisordered rocksalt structure to an optimal domain-segregated layered LiMnO 2 . This positive electrode produces an energy density of 820 W h kg −1 , achieved by harnessing a large reversible capacity with relatively small voltage hysteresis on electrochemical cycles. Moreover, voltage decay for cycling, as observed for Li-excess Mn-based electrode materials, is effectively mitigated. Furthermore, by determining the structure− property relationships of different LiMnO 2 polymorphs, LiMnO 2 with similar domain structure and surface area is successfully synthesized with an alternative and simpler method, without the metastable precursor and high-energy mechanical milling. The cyclability of domain-containing LiMnO 2 is also improved with the use of a highly concentrated electrolyte coupled with a lithium phosphate coating due to the suppression of Mn dissolution. These findings maximize the possibility of the development of high-energy, low-cost, and practical rechargeable batteries made from sustainable and abundant Mn sources without Ni/Co.

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A Practical and Sustainable Ni/Co-Free High-Energy Electrode Material: Nanostructured LiMnO₂

Miyaoka,

Sato,

Oguro

et al. 2024

ACS Cent. Sci.

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Mechanistic study on moisture exposure of Ti-based layered oxides for sodium storage applications

Campéon,

Ishikawa,

Tomohiro

et al. 2025

J. Mater. Chem. A

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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 is proposed as emerging high-capacity positive electrode materials for lithium-ion batteries. These oxides are typically synthesized by a calcination process...

Cited by 2 publications

References 29 publications

A Practical and Sustainable Ni/Co-Free High-Energy Electrode Material: Nanostructured LiMnO₂

A Practical and Sustainable Ni/Co-Free High-Energy Electrode Material: Nanostructured LiMnO₂

Mechanistic study on moisture exposure of Ti-based layered oxides for sodium storage applications

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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 is proposed as emerging high-capacity positive electrode materials for lithium-ion batteries. These oxides are typically synthesized by a calcination process...

Cited by 2 publications

References 29 publications

A Practical and Sustainable Ni/Co-Free High-Energy Electrode Material: Nanostructured LiMnO2

A Practical and Sustainable Ni/Co-Free High-Energy Electrode Material: Nanostructured LiMnO2

Mechanistic study on moisture exposure of Ti-based layered oxides for sodium storage applications

Contact Info

Product

Resources

About

A Practical and Sustainable Ni/Co-Free High-Energy Electrode Material: Nanostructured LiMnO₂

A Practical and Sustainable Ni/Co-Free High-Energy Electrode Material: Nanostructured LiMnO₂