Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (12): 2310-2315.doi: 10.3866/PKU.WHXB201510162

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Preparation and Electrocatalytic Properties of Perovskite Type Oxides CaVO3 for Oxygen Reduction Reaction

Feng-Ying. CHEN1,2,Li. XIAO1,*(),Cui-Xia. YANG1,Lin. ZHUANG1,*()   

  1. 1 College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
    2 College of Chemical Engineering and Modern Materials/Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shangluo University, Shangluo 726000, Shaanxi Province, P. R. China
  • Received:2015-07-13 Published:2015-12-04
  • Contact: Li. XIAO,Lin. ZHUANG E-mail:chem.lily@whu.edu.cn;lzhuang@whu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21273171);Technology Plan Projects of Shangluo, China(SK2014-01-09)

Abstract:

The precursor powder of CaVO3 was prepared by sol-gel method using vanadium pentoxide, calcium nitrate, citric acid, and oxalic acid as raw materials. The target product CaVO3 was obtained by calcining the precursor powder in argon atmosphere at 1000 ℃. In order to determine the appropriate calcination temperature, thermal stability of the precursor powder was tested. The target product CaVO3 was characterized by Fourier transform infrared (FTIR) spectrometry, thermogravimetry (TG), X-ray diffraction (XRD), and conductivity. In addition, the properties for oxygen reduction reaction (ORR) were also investigated, and the results showed that the electron transfer number of ORR on the modified electrode was 1.5-1.7, which indicating that ORR was a two-electron process.

Key words: Perovskite, Sol-gel method, Oxygen reduction reaction

MSC2000: 

  • O643