Single-crystalline ultra-Ni-rich LiNi 0.92 Co 0.04 Mn 0.04 O 2 cathode materials via molten-salt lithiation: mechanistic insights into cracking, interfacial degradation, and thermal stability

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The drive toward Ni-rich layered cathodes (Ni >90%) has significantly increased the energy density of lithium-ion batteries, yet their practical application remains constrained by rapid degradation.