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Official PDF TranslationJournal of Mineral Metallurgy and Materials Science

Surface reconstruction via rapid solution quenching to enhance structural stability of lithium-rich layered cathodes

Authors: Hailiang Chu; Jiaxiao Meng; Longde Duan; Shujun Qiu; Errui Wang; Fen Xu; and Lixian Sun

DOI: 10.1007/s12613-025-3303-7Status: Verified Translated Edition
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Key Findings in This Report

• A universal brine quenching strategy constructs a dual-layer surface structure (Y-doped layered inner layer + disordered rock-salt outer layer) on lithium-rich layered oxides. • Y-doping strengthens Y–O bonds, raises the oxygen evolution energy barrier, and stabilizes lattice oxygen. • The engineered surface reduces oxygen release, suppresses structural degradation, and enhances Li+ diffusion kinetics. • Y-quenched LLO delivers high capacity (283 mAh/g at 0.1C, 223 mAh/g at 1C), 91.2% capacity retention after 300 cycles, and reduced voltage decay (0.76 mV/cycle vs 1.16 mV/cycle).
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