Enhanced Electrochemical Properties of Carbon Coated TiO2 anode for Sodium-Ion Battery
Here, we confirmed that the carbon coated anatase-type micro-sphere TiO2 anode material has several advantages for the sodium ion battery system, including excellent cycle retention, high efficiency, good rate capability, and high energy density. The carbon coating, introduced by sucrose addition, had an effect of suppressing the growth of the TiO2 primary particles during calcination. The carbon coated TiO2 (sucrose 20 wt.% coated) electrode exhibited excellent cycle retention during 50 cycles (100%) and superior rate capability up to 30 C-rate at room temperature. This cell delivered a high discharge capacity of 155 mAh g-1 at 0.1 C, 149 mAh g-1 at 1 C, and 82.7 mAh g-1 at 10 C-rate, respectively.
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