Modulating the kinetics of CoSe<sub>2</sub> yolk–shell spheres <i>via</i> nitrogen doping with high pseudocapacitance toward ultra-high-rate capability and high-energy density sodium-ion half/full batteries
Jitao Geng, Shiyu Zhang, Edison Huixiang Ang, Jia Guo, Zhihua Jin, Xiao Li, Yafei Cheng, Huilong Dong, Hongbo Geng
Abstract
Uniform nitrogen-doped CoSe 2 yolk–shell spheres with improved electrochemical kinetics have been synthesized, which deliver excellent sodium storage performance in terms of ultra-high-rate capability and long cycling durability.
Topics & Concepts
PseudocapacitanceMaterials scienceKineticsDopingIonSodiumShell (structure)Chemical engineeringNitrogenElectrochemistryChemistryComposite materialPhysical chemistrySupercapacitorOrganic chemistryElectrodeMetallurgyOptoelectronicsQuantum mechanicsEngineeringPhysicsAdvancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced battery technologies research