Influence of F‐ doping on the microstructure,surface morphology and electrochemical properties of the lead dioxide electrode |
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| Authors: | HaiShen Kong Wei Li HaiBo Lin Zhan Shi HaiYan Lu YuanYuan Dan WeiMin Huang |
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| Institution: | 1. College of Chemistry, Jilin University, , Changchun, 130012 P.R. China;2. Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education of Jilin University, , Changchun, 130012 P.R. China;3. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, , Changchun, 130012 P.R. China |
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| Abstract: | The lead dioxide electrode (PbO2) with Ti substrate and SnO2‐Sb2O5 intermediate layer was doped by F‐ ion through the potentiostatic anode co‐deposition method. The content of F in the coating can be controlled by adjusting deposition potential. The effect of F‐ doping on the composition, surface morphology and electrochemical properties of the PbO2 electrode was characterized by X‐ray diffraction, scanning electron microscope, X‐ray photoelectron spectroscopy and electrochemical measurement methods. The results have confirmed that the content of β‐PbO2 increases with increasing that of F, and the doping can make the β‐PbO2 grains become fine and the electrode surface become smooth; the specific surface areas and conductivity increase, and the initial potential of oxygen evolution shifts toward positive direction compared with the free‐doped PbO2 electrode; the oxygen evolution potential increases with the increasing of the F‐content in the PbO2 film electrode. The bulk electrolysis result demonstrated that the performances of the F‐PbO2 electrode for anodic oxidation aniline have been improved to some extent. Copyright © 2012 John Wiley & Sons, Ltd. |
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| Keywords: | Ti substrate SnO2‐Sb2O5 intermediate layer lead dioxide F‐ doped XPS anode co‐deposition pxygen evolution potential electrocatalysis aniline chemical oxygen demand |
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