Direct growth of Fe3O4-MoO2 hybrid nanofilm anode with enhanced electrochemical performance in neutral aqueous electrolyte

Progress in Natural Science: Materials International

Xin Ba¹  Yimeng Wang¹  Wenhua Zuo¹  Chong Wang¹  Ruizhi Li²  Jinping Liu²  Yuanyuan Li³ 

[1] Institute of Nanoscience and Nanotechnology, Department of Physics, Central China Normal University, Wuhan, Hubei 430079, China;School of Chemistry, Chemical Engineering and Life Science, and State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China;School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China;

关键词: Magnetite;    MoO2;    Supercapacitor;    Binder-free anode;    Hybridization;   

DOI  :  10.1016/j.pnsc.2016.05.003

来源: DOAJ

【 摘 要 】

To enhance the electrochemical energy storage performance of supercapacitors (SCs), the current researches are general directed towards the cathode materials. However, the anode materials are relatively less studied. In the present work, Fe3O4-MoO2 (FO-MO) hybrid nano thin film directly grown on Ti substrate is investigated, which is used as high-performance anode material for SCs in Li2SO4 electrolyte with the comparison to pristine Fe3O4 nanorod array. The areal capacitance of FO-MO hybrid electrode was initially found to be 65.0 mF cm−2 at 2 mV s−1 and continuously increased to 260.0% after 50 cycles of activation. The capacitance values were considerably comparable or higher than many reported thin-film iron oxide-based anodes in neutral electrolyte. With the protection of MoO2 shell, the FO-MO electrode developed in this study also exhibited excellent cyclic stability (increased to 230.8% after 1000 cycles). This work presents a promising way to improve the electrochemical performance of iron oxide-based anodes for SCs.

【 授权许可】

Unknown