Japanese Journal of Applied Physics · 1980 · 127 citations · 0 references
Natural SciencesChemistryMaterials ScienceElectrochemistryInorganic ChemistrySolid-state ChemistryBattery MaterialsElectrochemical Energy StorageElectrode MaterialsIon-conducting MaterialsIonic ConductorsMetal OxidesCharge Compensation MechanismsElectrochromic DevicesLithium-ion BatteriesLithium-ion Battery Electrodes Based On Metal OxidesMixed Ionic-electronic ConductionMixed Ionic-electronic ConductivityMixed Ionic-electronic ConductorsSecondary Batteries
Insertion compounds contain a mobile cation of variable concentration over a wide range of solid solution. Charge compensation is achieved by a variation of mobile-electron concentration in the host matrix. Such mixed ionic/electronic conductors are of practical interest as electrodes in secondary batteries and electrochromic displays. Oxides containing transition-metal ions in unusually high valence states can be prepared by room-temperature extraction of mobile cations from such structures. Some properties of the systems Li 1- y CoO 2 and Na 1- y CoO 2 are presented.