Small · 2016 · 124 citations · 32 references
Natural SciencesMaterials EngineeringMaterials ScienceElectrochemical EngineeringMaterials ChemistryNanomaterialsAnode MaterialsBattery MaterialsElectrochemical CellsElectrochemical Energy StorageElectrode MaterialsEnergy Storage MaterialsAnode Active MaterialsCycling StabilityElectrochemical ConductivityElectronic ConductivityLithium-ion Battery Anode MaterialsNanostructured AnodesNanostructuresTransition Metal Oxide Anodes
Here, ZnFe2 O4 double-shell hollow microspheres are designed to accommodate the large volume expansion during lithiation. A facile and efficient vapor-phase polymerization method has been developed to coat the ZnFe2 O4 hollow spheres with polypyrrole (PPY). The thin PPY coating improves not only the electronic conductivity but also the structural integrity, and thus the cycling stability of the ZnFe2 O4 hollow spheres. Our work sheds light on how to enhance the electrochemical performance of transition metal oxide-based anode materials by designing delicate nanostructures.
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