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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Turcheniuk, K. et al. Battery materials for low-cost electric transportation. Mater. Today 42, 57–72 (2021). A review article that presents the future demand for key battery materials for automotive applications and warns of price increments and supply uncertainties.
Ryu, H.-H. et al. Reducing cobalt from lithium-ion batteries for the electric vehicle era. Energy Environ. Sci. 14, 844–852 (2021). This perspective article compares the electrochemical performance and cost efficiency of Co-free Li[NixMn1–x]O2, Co-poor Li[NixCoyMn1–x–y]O2 (with x > 0.9), and LiFePO4 cathodes and evaluates their commercial viability for future EVs.
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Park, G.-T. et al. High-performance Ni-rich Li[Ni0.9–xCo0.1Alx]O2 cathodes via multi-stage microstructural tailoring from hydroxide precursor to the lithiated oxide. Energy Environ. Sci. 14, 5084–5095 (2021). This paper reports the importance of tailoring the microstructure of the hydroxide precursor to enhance the electrochemical performance of the cathode.
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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 https://doi.org/10.1038/s41560-022-01106-6 (2022).
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Co-free Ni-rich layered cathode with long-term cycling stability. Nat Energy 7, 914–915 (2022). https://doi.org/10.1038/s41560-022-01116-4