Preparation and lithium storage performance of ultrathin-wall TiO2(B)nanotubes
TiO2(B)nanotubes(TBTs)with ultra-thin walls and TiO2(B)nanorods(TBRs)were prepared by a simple hy-drothermal method.The prepared TBTs and TBRs were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy and nitrogen adsorption-desorption isotherm.The results show that the prepared TBTs material has obvious internal cavity,1-2 nm wall thickness and open tip.Benefiting from the ultrathin-walled nanotube structure,the as-prepared TBTs as anode materials for LIBs exhibited enhanced lithium kinetics and superior cycling performance with high specific capacities of 212 mA·h·g-1 at 2.0 C after 200 cycles and 111 mA·h·g-1 at 5.0 C after 1 000 cycles.This work provides a new direction for the preparation of high performance titanium-based oxides.
ultrathin-wallnegative electrode materialslithium ion batteryhydrothermal methodlithium kinetics
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