Title: Supercapacitor based on few-layer MoO₃ nanosheets prepared by solvothermal method

Authors: Shalong Wang; Kang Dou; Yuhang Dong; Yousheng Zou; Haibo Zeng

Addresses: Institute of Optoelectronics and Nanomaterials, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China ' Institute of Optoelectronics and Nanomaterials, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China ' Institute of Optoelectronics and Nanomaterials, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China ' Institute of Optoelectronics and Nanomaterials, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China ' Institute of Optoelectronics and Nanomaterials, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China

Abstract: In this work, few-layer orthorhombic MoO₃ (α-MoO₃) nanosheets with high crystallinity were prepared by solvothermal method. The thickness of the prepared MoO₃ nanosheets is about 15 nm. The effects of temperature and solvent on the growth and morphology of MoO₃ nanosheets were investigated and the results show that temperature ranging from 140 to 180°C has little influence on the morphology and size of MoO₃ nanosheets, while the kind of solvent has a great impact on it. The electrochemical performances of the prepared MoO₃ nanosheets were studied by cyclic voltammetry and chronopotentiometry. The results show that the specific capacitance of the MoO₃ nanosheets depends on the temperature, and the maximum specific capacitance of 136.8 F/g is obtained at 160°C.

Keywords: MoO3 nanosheets; molybdenum trioxide; solvothermal method; microstructure; supercapacitors; electrochemical properties; nanotechnology; thickness; temperature; solvent; capacitance.

DOI: 10.1504/IJNM.2016.079225

International Journal of Nanomanufacturing, 2016 Vol.12 No.3/4, pp.404 - 414

Received: 22 Jun 2015
Accepted: 14 Jan 2016
Published online: 23 Sep 2016 *

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