A precursor-derived morphology-controlled synthesis method for mesoporous Co3O4 nanostructures towards supercapacitor application

摘要: The controlled synthesis of multifarious nanostructures is valuable for understanding the properties associated with surface structure and exploring potential applications. Herein, various morphological Co3O4 precursors were synthesized hydrothermally fabricating mesoporous nanostructures. Importantly, morphology, size, crystalline phase independently tuned by controlling components in solution (e.g. anions, cations, hydrolysis agents). microstructure has obviously changed from porous hexagons to nanoneedles changing anions solution. After calcination, as-prepared converted into nanostructures, their morphology size well preserved. effect experimental conditions on growth was explored, corresponding mechanism proposed. Moreover, electrochemical different morphologies tested. results showed that 3D hierarchical flower-like assembled hexagonal nanosheets exhibited higher specific capacitance (327.3 F g−1 at 0.5 A g−1) excellent retention (96.07% 5 after 10 000 cycles. It believed this anion-assisted synthetic approach can be extended preparation other transition metal oxides.