Author(s)

Baogui Tian, Xuanyou Long, Kangkang Wang, Hailei Zhao, Fei Gao, and Yang Kai

Corresponding Author

Kangkang Wang, Hailei Zhao

ABSTRACT

Anatase TiO2 with high theoretical capacity is emerging as an appealing anode for sodium-ion storage. Nevertheless, the inherent poor conductivity limits its practical use. In our work, anatase TiO2/PPy composite material in 10wt.% PPy content was synthesized via a high energy ball-milling method. The electrochemical tests demonstrated its notable Na storage capability. The charge capacity of the first cycle reached 207.5 mAh g−1 at 0.1 C, and maintained at 191 mAh g-1 after 40 cycles. Even after a long-term cycling of 150 weeks at rate 1 C, the electrode exhibited a high specific capacity of 103.5 mAh g−1.

KEYWORDS

TiO2, PPy, Composite material, Sodium-ion battery, Anode