Revisiting high-valence dopant mechanisms in Ni-rich cathodes: cation ordering dominates over morphological alignment for enhanced stability
Shuo Wang, Siqi Chen, Xiaohong Liu, Guilin Feng, Bin Zhang, Wangyan Xing, Yao Xiao, Hao Liu, Wei Xiang
Abstract
lattice stabilization through cation ordering and highlight the necessity of co-optimizing doping content with synthesis temperature. This work revises the conventional understanding of high-valence doping mechanisms by establishing cation ordering as the primary factor for stability, providing a generalizable principle for designing next-generation ultra-high-nickel cathodes.
Topics & Concepts
DopantDopingSinteringMaterials scienceCathodeMicrostructureElectrochemistryStructural stabilityChemical physicsCalcinationLattice (music)Chemical engineeringWork (physics)NanotechnologyGrain growthGrain sizeDensity functional theoryCapacity lossStability (learning theory)OxideLinear relationshipMineralogyInorganic chemistryIonAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesSupercapacitor Materials and Fabrication