Preparation of Pb/Polyaniline Coating Electrode and its Electrocatalytic Effect on Anodic Oxygen Evolution

Abstract:

The anodic electrodeposition of polyaniline (PANI) on Pb substrate was performed by both potentiostatic and galvanostatic method. Influences of the applied potential and current density on the formation of PANI were investigated. The electrocatalytic effect of Pb electrode modified by PANI on the oxygen evolution reaction (OER) in sulfuric acid was examined via anodic polarization measurements. The results indicated that a significantly enhanced catalytic activity was obtained on Pb electrodes modified by PANI. The overpotential for OER drops 0.14V~0.42V and the exchange current density rises by one to three orders of magnitude compared to the blank Pb electrode. As a new kind of OER anodes in acidic electrolytes, the Pb electrode coated by PANI shows a potential application prospect in the electrowinning of non-ferrous metals.

• Periodical: Advanced Materials Research (Volumes 148-149)
• Pages: 236-240
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.148-149.236
• Online since: October 2010
• Authors: Jin Ming Long, Zhong Cheng Guo, Xiao Yun Zhu
• Keywords: Electrocatalysis, Electropolymerization, Oxygen Evolution Anode, Pb Electrode, Polyaniline (PANI)

References

[1] R.R. Moskalyk, A. Alfantazi, A.S. Tombalakian, et al: Minerals Engineering Vol. 12 (1999), p.65.

[2] M. J. Croissant, T. Napporn, J. M. Léger, et al: Electrochim. Acta Vol. 43(1998), p.2447.

[3] L. Niu, Q. Li, F. Wei, et al: Synthetic Metals Vol. 139(2003), p.271.

[4] Z.A. Hu, X.L. Shang, Y.Y. Yang, et al: Electrochim. Acta Vol. 51(2006), p.3351.

[5] V.G. Khomenko, V.Z. Barsukov and A.S. Katashinskii: Electrochim. Acta Vol. 50(2005), p.1675.

[6] K.G. Conroy and C.B. Breslin: Electrochimica Acta Vol. 48(2003), p.721.

[7] Y. Huang, S. Xiao and H. Tian: Journal of Functional Polymers Vol. 11(1998), p.44(in Chinese).

[8] J.M. Long, Z.C. Guo and X.Y. Zhu: Advanced Materials Research Vols. 97-101(2010), p.1301.