Abstract
A pioneering effort has been made to develop F−-ion-doped anatase TiO2 with a spherical shape and mesoporous structure synthesized by a unique, low-temperature urea-assisted hydrothermal synthesis. The electrochemical anode performance of pristine TiO2 for lithium-ion batteries was improved significantly by utilizing F−-ion doping. TiO2 doped with 10 mol % fluorine ions achieved a reversible capacity of 157 mA h/g after 100 cycles. In addition, the rate capability of the F−-ion-doped TiO2 was encouraging, with a stabilized capacity of 144 mA h/g at 30C (C rating) of charge (Li extraction).
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