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Co-free Ni-rich layered cathode with long-term cycling stability


Introducing Mo into a Ni-rich layered cathode enables a Co-free Li-ion battery to cycle stably at 4.4 V, retaining 86% of its initial capacity after 1,000 cycles. The grain size refinement engendered by Mo increases the resistance to fracture by deflecting cracks while providing fast diffusion paths for Li ions.

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Fig. 1: Comparison of the electrochemical cycling performance and mechanical stability of the Co-free cathodes.


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This is a summary of: Park, G-T. et al. Introducing high-valence elements into cobalt-free layered cathodes for practical lithium-ion batteries. Nat. Energy (2022).

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Co-free Ni-rich layered cathode with long-term cycling stability. Nat Energy 7, 914–915 (2022).

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