Structural and electrochemical features of 3D nanoporous platinum electrodes |
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| Authors: | Sejin Park Ji-Hyung Han Taek Dong Chung |
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| Affiliation: | a Nomadien Corporation, B-206, SK Twintech Tower, Gasan-dong, Geumcheon-gu, Seoul 153-773, Republic of Korea
b Department of Chemistry, Seoul National University, Seoul 151-747, Republic of Korea |
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| Abstract: | The morphologies, roughness factors, and thicknesses of 3D nanoporous Pt (3D-npPt) films were investigated in terms of electroplating conditions. The electrochemical behaviors of 3D-npPt films with regard to electrochemical glucose oxidation, O2 reduction, and H2O2 reduction were investigated as a function of roughness factors (Rf). Close comparison of glucose oxidation on 3D-npPt and 1D nanoporous Pt (1D-npPt) showed that the overall electrode activity of 3D-npPt is significantly higher than that of 1D-npPt. Electrochemical impedance analysis based on transmission line theory confirmed a substantially low pore resistance of 3D-npPt, which may account for the superior electrode response of this material. |
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| Keywords: | 3D nanopore Electroplating Nanoporous platinum Electrode activity Pore resistance |
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