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Stabilizing the Oxygen Lattice and Reversible Oxygen Redox Chemistry through Structural Dimensionality in Lithium‐Rich Cathode Oxides
Author(s) -
Zhao Enyue,
Li Qinghao,
Meng Fanqi,
Liu Jue,
Wang Junyang,
He Lunhua,
Jiang Zheng,
Zhang Qinghua,
Yu Xiqian,
Gu Lin,
Yang Wanli,
Li Hong,
Wang Fangwei,
Huang Xuejie
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201900444
Subject(s) - redox , oxygen , cathode , chemistry , lattice (music) , lattice energy , chemical physics , transition metal , lithium (medication) , crystal structure , inorganic chemistry , crystallography , catalysis , physics , organic chemistry , acoustics , medicine , endocrinology
Lattice‐oxygen redox (l‐OR) has become an essential companion to the traditional transition‐metal (TM) redox charge compensation to achieve high capacity in Li‐rich cathode oxides. However, the understanding of l‐OR chemistry remains elusive, and a critical question is the structural effect on the stability of l‐OR reactions. Herein, the coupling between l‐OR and structure dimensionality is studied. We reveal that the evolution of the oxygen‐lattice structure upon l‐OR in Li‐rich TM oxides which have a three‐dimensional (3D)‐disordered cation framework is relatively stable, which is in direct contrast to the clearly distorted oxygen‐lattice framework in Li‐rich oxides which have a two‐dimensional (2D)/3D‐ordered cation structure. Our results highlight the role of structure dimensionality in stabilizing the oxygen lattice in reversible l‐OR, which broadens the horizon for designing high‐energy‐density Li‐rich cathode oxides with stable l‐OR chemistry.