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Ordered "superlattice" TiO2/Nb2O5 nanotube arrays with improved ion insertion stability
Min Yang1, Guang Yang, Erdmann Spiecker
1School of Chemical Engineering and Technology, Harbin Institute of Technology, West DaZhi Street 92, Harbin, 150001, P. R. China. yangmin@hit.edu.cn
Abstract:
Self-ordered TiO(2)/Nb(2)O(5) "superlattice" nanotube arrays are successfully fabricated by electrochemical anodization from a commercially available Ti-Nb metal multilayer. The oxide nanotube walls then consist of alternating ~4 nm TiO(2) and ~7 nm Nb(2)O(5) rings. Such "superlattice" nanotube layers exhibit a much higher structural cycling stability for reversible Li-intercalation processes than pure TiO(2) nanotubes.
