The origin of heavy element doping to relieve the lattice thermal vibration of layered materials for high energy density Li ion cathodes
Ruirui Zhao, Jiliang Zhang, Gi‐Hyeok Lee, Kai Zhang, Vincent Wing‐hei Lau, Jey‐Jau Lee, Igor Moudrakovski, Yue-Lin Yang, Feng Zou, Mihui Park, I‐Ming Hung, Yong‐Mook Kang
Abstract
We report an effective strategy to inhibit the phase transition of LiCoO<sub>2</sub> from hexagonal layered to cubic spinel during delithiation. The small thermal vibration amplitude of the Sn dopant helps pin the lattice vibration, stabilizing CoO<sub>6</sub> octahedra during charge/discharge.
Topics & Concepts
DopantMaterials scienceSpinelDopingVibrationOctahedronLattice (music)IonThermalHexagonal crystal systemCathodeCondensed matter physicsLattice vibrationHexagonal latticeAmplitudePhase transitionCrystal structureCrystallographyChemistryMetallurgyOptoelectronicsPhysicsPhononPhysical chemistryThermodynamicsOpticsAntiferromagnetismOrganic chemistryAcousticsQuantum mechanicsAdvancements in Battery MaterialsSemiconductor materials and devicesSupercapacitor Materials and Fabrication