Theoretical investigation of quantum capacitance of Co-doped α-MnO<sub>2</sub> for supercapacitor applications using density functional theory
Ariya K. Vijayan, Sreehari M. S, Simran Kour, Saptarshi Ghosh Dastider, Krishnakanta Mondal, A. L. Sharma
Abstract
Substitution doping of cobalt in α-MnO 2 can enhance its structural stability, electric conductivity, potential window, and surface charge density. The shortened band gap and localized states near the Fermi level improve the quantum capacitance ( C QC ) of α-MnO 2 .
Topics & Concepts
CapacitanceQuantum capacitanceDensity functional theorySupercapacitorDopingFermi levelCondensed matter physicsMaterials scienceDensity of statesQuantumCharge densityBand gapCharge (physics)ConductivityNanotechnologyChemistryOptoelectronicsPhysicsComputational chemistryPhysical chemistryQuantum mechanicsElectrodeElectronSupercapacitor Materials and FabricationAdvancements in Battery MaterialsGraphene research and applications