Carbon nanospheres derived from sunflower seed husk composited with anatase TiO2 used as anode for lithium-ion battery

In this paper, the sunflower seed husks were chosen as raw material to prepare carbon matrix. The ammonium persulfate ((NH4)(2)S2O8) was used as catalyst to obtain the biomass-derived carbon and anatase TiO2 composite. To explore the influence of different crystal TiO2 on the composite material, the carbon mix with P25 TiO2 was prepare to contrast. The size and distribution of the titanium dioxide in nanosphere activated carbon and anatase TiO2 composite named NAC@TiO2-A are both uniform. And the structure of prepared material is crosslinked spherically, of which specific surface area is 365.31 m(2) g(-1) and average pore diameter is 3.65 nm. When using NAC@TiO2-A as the anode of lithium-ion battery, after 100 cycles at 0.2C, the discharge specific capacity held steady at 895.3 mA h g(-1). And it also delivered a high capacity of 513.6 mA h g(-1) at 2C and 379.3 mA h g(-1) at 5C after 100 cycles.