期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 273, 期 -, 页码 148-155出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2018.06.056
关键词
Co-doped TiO2; Porous structure; Electrochemical; Supercapacitor
类别
资金
- National Research Foundation of Korea [NRF-2014R1A2A1A11052965]
- Fundamental Technology Research Program - Korean government [2014M3A7B4052201]
- China Scholarship Council (CSC) [201808260016]
- Henan Province Key Laboratory of New Opto-electronic Functional Materials Open Project [aynu201701]
- National Natural Science Foundation of China [21273010]
Highly porous nanostructures having large specific surface areas are very desirable for electrochemical super capacitors to achieve a large energy storage capacity. We synthesized porous Co-doped TiO2 nanostructures with an average diameter of 450 nm through a simple solvothermal method by using tetrabutyl titanate and cobalt acetate as precursors and polystyrene beads as templates. The optimized 7% Co-doped TiO2 nanostructures-based supercapacitor electrodes exhibited a specific capacitance of 352 F g(-1) at a current density of 0.5 A g(-1) while retaining a capacity of 97.2% after 3000 cycles. This excellent electrochemical performance may be ascribed to the synergistic effects originating from conductivity enhancement of TiO2 through optimized Co-doping and larger specific surface areas rendered by structural porosity, when compared to the undoped TiO2 samples. Our results suggest that porous Co-doped TiO2 nanostructures can be explored for potential electrochemical applications.
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