The power of Nb-substituted TiO2 in Li-ion batteries: Morphology transformation induced by high concentration substitution
作者： Hao Yang , Chun-Kai Lan , Jenq-Gong Duh
DOI: 10.1016/J.JPOWSOUR.2015.04.074
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摘要: Abstract This study aims to investigate the power potential of Li-ion batteries using a hydrothermal process synthesize nanoscale Nb–TiO 2 with high surface area. By substituting Nb into anatase TiO , rate capability is improved formation nanoplate containing (001) facets and NbO x species. In addition, solubility promotes transformation from hollow-like plate-like morphology, accelerating transportation over large contact With respect capability, displays capacity 220 mAh g −1 at 0.5C retains 127 mAh g 10C. Additionally, cyclability test exhibits less degradation after 10,000 cycles. order mechanisms improvement, electrochemical impedance spectroscopy (EIS) cyclic voltammetry (CV) are applied measure diffusivity charge-transfer resistance. The results demonstrate that both ability enhanced, leading pseudocapacitance. Thus, it can be concluded superior by improvement derives novel should provide approach for industrial fabrication batteries.
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