Na<sup>+</sup>/vacancy disordered manganese-based oxide cathode with ultralow strain enabled by tuning charge distribution
Siyuan Li, Yangyang Zhang, Kaixiang Lei, Qian Yang, Zheng Liu, Kezhu Jiang, Fujun Li, Qiongqiong Lu, Daria Mikhailova, Shijian Zheng
Abstract
Introducing electropositive Sn 4+ into TMO 2 layer increases the charge density around O, reduces the Na–TM and Na–Na electrostatic repulsions as well as the electron delocalization, thus disturbing the charge ordering and facilitating Na + diffusion.
Topics & Concepts
Delocalized electronMaterials scienceCathodeCharge (physics)ManganeseVacancy defectManganese oxideCharge densityElectronDiffusionOxideCondensed matter physicsStrain (injury)Atomic physicsMolecular physicsChemistryPhysical chemistryPhysicsThermodynamicsMetallurgyOrganic chemistryQuantum mechanicsMedicineInternal medicineAdvancements in Battery MaterialsAdvanced Memory and Neural ComputingAdvanced battery technologies research