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Influence of Ionic Liquid [Emim]BF4 on Nucleation and Growth of PbO2 during Electrodeposition |
Juanqin XUE( ), Jian ZHANG, Lei WANG, Lihua YU, Changbin TANG, Qiang BI |
School of Metallurgical Engineering, Xi'an University Of Architecture and Technology, Xi'an 710055, China |
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Cite this article:
Juanqin XUE, Jian ZHANG, Lei WANG, Lihua YU, Changbin TANG, Qiang BI. Influence of Ionic Liquid [Emim]BF4 on Nucleation and Growth of PbO2 during Electrodeposition. Chinese Journal of Materials Research, 2017, 31(10): 765-772.
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Abstract The effect of 1- ethyl -3- methyl imidazole tetrafluoroborate ([Emim]BF4) on the nucleation and growth of PbO2 coating on glassy carbon electrode was studied during the electrodeposition process by means of in-situ cyclic voltammetry, chronopotentiometry and chronoamperometry with an electrochemical workstation. Besides, the surface morphology and crystal structure of PbO2 coating was characterized by SEM and XRD. The results show that PbO2 electrodeposition process follows the three-dimensional continuous nucleation model, the addition of ionic liquid in the electrolyte does not significantly change the electrocrystallization mechanism of PbO2, but can inhibit the nucleation and crystal growth rate of PbO2, so as to decrease the PbO2 grain size, densify the coating and enhance the electrochemical performance of the resulted PbO2 electrode.
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Received: 08 October 2016
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Fund: Supported by National Natural Science Foundation of China (Nos.51478379 & 51408468), Major Basic Research Projects of Shaanxi Provincial Natural Science Foundation (No.2017ZDJC-25) and Special Research Project of Shaanxi Provincial Department of Education (No.16JK1422) |
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