Biphasic high-entropy layered oxide as a stable and high-rate cathode for sodium-ion batteries

Jinxiao Mu,Tianxun Cai,Wujie Dong,Ce Zhou,Zhen Han,Fuqiang Huang

Chemical Engineering Journal（2023）

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摘要

•Synergetic strategy of hybrid phase and high-entropy is designed.•The biphasic high-entropy cathode exhibits high rate capacity of 81.8 mA g−1 at 2 A g−1.•Around 90% capacity retention after 1000 cycles at 2 A g−1.•Reversible O3/P2 ↔ P3/P2 ↔ OP2/OP4 phase transition is revealed by in situ XRD.

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关键词

Sodium ion batteries,Layered oxide cathode,O3/P2 hybrid phase,High-entropy,Structure evolution,High-rate

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