Developing
electrode materials is one of the important topics to
modulate the performance of lithium ion batteries. In this study,
51Zr40Ti4.5Al4.5V alloy is applied to synthesize Ti–Zr–Al–V–O
nanotubes via an anodization method. The results demonstrate that
the mixed TiO2/ZrO2/Al2O3/V2O5 nanotubes (ZTTs) are successfully formed
at an applied voltage of 20–40 V. This vertical tubular nanostructure
morphology with both inner and outer surface active sites exhibits
a high rate capability (discharge capacity of ∼160 μAh
cm–2 at 200 μA cm–2) and
excellent cycle ability (150 μAh cm–2 after
200 cycles). The resulting specific capacity is higher than those
of close-packed TiO2 (51 μAh cm–2) and bare spaced TiO2 (34 μAh cm–2) nanotubes. The results inspire a facile strategy to build a three-dimensional
(3D) binder-free anode material with a high performance of lithium
ion microbatteries.
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