Copper ferrites@reduced graphene oxide anode materials for advanced lithium storage applications.

摘要: Copper ferrites are emerging transition metal oxides that have potential applications in energy storage devices. However, it still lacks in-depth designing of copper based anode architectures with enhanced electroactivity for lithium-ion batteries. Here, we report a facile synthesis technology anchored on reduced graphene oxide (CuFeO2@rGO and Cu/CuFe2O4@rGO) as the high-performance electrodes. In resulting configuration, offers continuous conductive channels electron/ion transfer high specific surface area to accommodate volume expansion ferrites. Consequently, sheet-on-sheet CuFeO2@rGO electrode exhibits reversible capacity (587 mAh g−1 after 100 cycles at 200 mA g−1). particular, Cu/CuFe2O4@rGO hybrid, which combines advantages nano-copper graphene, manifests significant enhancement lithium properties. It reveals superior rate capability (723 mAh g−1 800 mA g−1; 560 mAh g−1 3200 mA g−1) robust cycling (1102 mAh g−1 250 800 mA g−1). This unique structure design provides strategy development multivalent device applications.