Lattice Engineering to Refine Particles and Strengthen Bonds of the LiNi_0.9Co_0.05Mn_0.05O₂ Cathode toward Efficient Lithium Ion Storage

Microstructural degradation of Ni-rich cathode materials is a major bottleneck limiting their widespread applications, originating from their microcracks due to lattice strain. Herein, a facile lattice engineering strategy (praseodymium substitution at octahedral 3b Ni sites) is constructed to greatly reduce the lattice strain of the LiNi0.9Co0.05Mn0.05O2 cathode. The relationship between the lattice strain and electrochemical performance is...