Facile synthesis of rod-like Bi2O3 nanoparticles as an electrode material for pseudocapacitors. Issue 1 (January 2016)

• Record Type: Journal Article
• Authors: Huang, Xiaoxiong; Zhang, Wei; Tan, Yueyue; Wu, Jianxiang; Gao, Yilong; Tang, Bohejin
• Is Part Of: Ceramics international. Volume 42:Issue 1:Part B(2016)
• Page Start: 2099
• Page End: 2105
• Publication Date: 2016-01
• Subjects: E. Capacitors -- E. Electrodes -- Rod-like Bi2O3 -- Sol–gel preparation; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.09.157
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The present paper reports the synthetic route of Bi2 O3 with rod-like architectures and its applications in supercapacitors. The rod-like Bi2 O3 was prepared via a sol–gel method using Bi(NO3 )3 ·5H2 O as a precursor. The structures and morphology of the synthesized samples were characterized by X-ray diffractions (XRD), transmission electron microscope (TEM), scanning electron microscopy (SEM) and nitrogen gas sorption, while their electrochemical properties were carried out using cyclic voltammetry (CV), galvanostatic charge–discharge test and electrochemical impedance spectroscopy (EIS). XRD patterns revealed that the pure β-Bi2 O3 phase was obtained and the electrochemical measurement showed that the material exhibited a specific capacitance of 528 F g −1 at the scan rate of 5 mV s −1 with superior rate capability. Furthermore, the electrode material shows good cycle stability in the potential range of −1.1 to 0.2 V (vs. saturated calomel electrode (SCE)) after 1000 cycles. The results indicate that the as-prepared Bi2 O3 is a promising electrode material for pseudocapacitors application.