A CoSe–C@C core–shell structure with stable potassium storage performance realized by an effective solid electrolyte interphase layer
Xin Gu, Li Zhang, Wenchao Zhang, Sailin Liu, Sheng Wen, Xinning Mao, Pengcheng Dai, Liangjun Li, Dandan Liu, Xuebo Zhao, Zaiping Guo
Abstract
A CoSe–C@C core–shell structure is designed as a novel potential anode for PIBs. The introduction of KFSI salt is found to contribute to the formation of an inorganic-compound-rich SEI layer, benefiting the K ion diffusion and charge transfer dynamics.
Topics & Concepts
ElectrolyteInterphaseAnodeMaterials scienceChemical engineeringPotassiumLayer (electronics)DiffusionShell (structure)ChemistryNanotechnologyElectrodeThermodynamicsComposite materialPhysical chemistryMetallurgyGeneticsPhysicsBiologyEngineeringAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesAdvanced battery technologies research