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Li‐Ion Battery Cathodes
In article 2212098, Jaekwang Lee, Sung‐Yoon Chung, and co‐workers demonstrate that a significant amount of oxygen loss can be induced exclusively by lattice strain even in pristine layered oxides, LiCoO2 and Li2MnO3, without any electrochemical Li extraction. Calculations based on density functional theory also clarify that shear strain, among many different modes of mechanical...
Since the recognition of a significant oxygen‐redox contribution to enhancing the capacity of Li transition‐metal oxide cathodes, the oxygen release and subsequent structural variations together with capacity fading are critical issues to achieve better electrochemical performance. As most previous reports dealt with the structural degradation of cathodes after electrochemical cycling, it is fairly...
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