Approaching a stable oxygen redox reaction in lithium-rich cathode materials : structural perspectives from mechanism to optimization

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)19387-19411
Number of pages25
Journal / PublicationJournal of Materials Chemistry A
Volume10
Issue number37
Online published13 Jul 2022
Publication statusPublished - 7 Oct 2022

Abstract

Oxygen redox (OR) chemistry has been an attractive topic in the field of high-energy lithium-ion batteries, as it enables extra storage of charge and boosts the capacity of highly potential layered Li-rich oxide (LLO) cathode materials. However, the OR reaction is usually irreversible during the electrochemical process, inducing severe performance degradation that sets an impenetrable barrier to the LLO applications. Over the last two decades, great efforts have been made to fundamentally understand the irreversibility of OR, finally reaching a consensus that it is deeply rooted in the structural features of LLOs. Although the structural mechanism is complex and still remains to be further clarified, the current findings of the structure-OR coupling have already inspired blooming optimistic expectations from structural perspectives. Herein, we systematically review the recent progress of the OR investigations in LLOs, with a special emphasis on deciphering the structure-OR coupling. Moreover, efficient structural control strategies for promoting the reversibility of OR are also introduced, followed by an outlook on future rational design and development of LLO materials. This comprehensive summary and perspective are expected to be helpful to promote further OR and LLO research.

Research Area(s)

  • LAYERED OXIDE CATHODE, X-RAY-DIFFRACTION, ANIONIC REDOX, HIGH-CAPACITY, IN-SITU, LATTICE OXYGEN, VOLTAGE-FADE, ELECTROCHEMICAL PERFORMANCE, PRACTICAL CHALLENGES, PSEUDOTERNARY SYSTEM

Citation Format(s)

Approaching a stable oxygen redox reaction in lithium-rich cathode materials : structural perspectives from mechanism to optimization. / Yin, Zijia; Zhu, He; Huang, Yalan et al.

In: Journal of Materials Chemistry A, Vol. 10, No. 37, 07.10.2022, p. 19387-19411.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review