Hierarchical Cu4V_(_(2.15))O_(9.38) micro-manostructures: a lithium intercalating electrode material

摘要

Hierarchical Cu4V_(2.15)O9_(9.38) micro-/nanostructures have been prepared by a facile "forced hydrolysis" method, from an aqueous peroxovanadate and cupric nitrate solution in the presence of urea. The hierarchical architectures with diameters of 10-20 μm are assembled from flexible nanosheets and rigid nanoplates with widths of 2-4 μm and lengths of 5-10μm in a radiative way. The preliminary electrochemical properties of Cu4V_(2.15)O_(9.38) have been investigated for the first time and correlated with its structure. This material delivers a large discharge capacity of 471 mA h g~(-1) above 1.5 V, thus making it an interesting electrode material for primary lithium ion batteries used in implantable cardioverter defibrillators.