Vanadium oxide layers with homogeneous nanoporous nanotubular morphology (see picture) were successfully fabricated by direct anodization of vanadium in fluoride electrolytes such as [TiF6]2− or [BF4]−. The pore size and layer thickness can easily be controlled by tailoring the electrochemical conditions. Such nanotubular or porous structures are promising for the fabrication of lithium-ion insertion electrodes.
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