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Preparation of LiFeO2 with Alpha‐ NaFeO2‐Type Structure Using a Mixed‐Alkaline Hydrothermal Method
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1997
Year
Mixed‐alkaline Hydrothermal MethodEngineeringMetastable FormChemistryAqueous BatteryAlpha‐ Nafeo2‐type StructureChemical EngineeringStarting MixtureCalcium AluminateMaterials ScienceBattery Electrode MaterialsAdvanced Electrode MaterialLithium-ion BatteryEnergy StorageSolid-state Batteryα‐‐Type StructureElectrochemistryLi-ion Battery MaterialsEnergy CeramicCeramic SynthesisBatteriesFunctional MaterialsHydrothermal Processing
A metastable form of with α‐‐type structure (layered ) was synthesized directly from α‐FeOOH or by hydrothermal reaction at 230°C using aqueous mixed‐alkaline solutions such as or . Highly crystallized samples could be obtained by a one‐step process. The yield of the layered strongly depends on the composition of the starting mixture. Preliminary tests on electrochemical lithium deintercalation/intercalation show poor performance between 4.5 and 1.5 V.