Electrocatalytic Activity of Pd/Ir/Sn/Ta/TiO2 Composite Electrodes
AbstractThis study compared the electrolytic refining process using different commercial Pd-based electrodes. The Pd-based electrode had an Ir:Sn molar ratio of 1:1 and contained 10% tantalum on a titanium substrate. The palladium weight ratio varied from 0 g to 1.8 g, 4.7 g, 8.6 g, and 15.4 g. Electrolytic refining was investigated for the Pd-based electrode in 3 M of H2SO4. The interfacial microstructure and components of the substrate were investigated using energy-dispersive X-ray analysis, and the electrochemical properties of the materials were measured using cyclic voltammetry, linear scan voltammetry, electrochemical impedance spectroscopy, and accelerated life tests. Of all the tested Pd-based electrodes, those with a palladium loading weight of 8.6 g showed the highest and most stable electrode activity at 3 M of H2SO4, with a capacitance retention of 96% of its initial value. The accelerated life test results for the 8.6 g Pd-Ir-Sn-Ta/TiO2 electrode showed a gradual slope with an efficiency of almost 100% at 1000 h in an aqueous solution of 3 M of H2SO4. After the test, the dissolved elements that caused resistance in the electrolyte increased with increasing palladium loading content. Thus, the 8.6 g Pd-Ir-Sn-Ta/TiO2 electrode demonstrated the optimum composition in 3 M of H2SO4 for electrolyte refining. View Full-Text
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Park, J.E.; Yang, S.K.; Kim, J.H.; Park, M.-J.; Lee, E.S. Electrocatalytic Activity of Pd/Ir/Sn/Ta/TiO2 Composite Electrodes. Energies 2018, 11, 3356.
Park JE, Yang SK, Kim JH, Park M-J, Lee ES. Electrocatalytic Activity of Pd/Ir/Sn/Ta/TiO2 Composite Electrodes. Energies. 2018; 11(12):3356.Chicago/Turabian Style
Park, Jung E.; Yang, Seung K.; Kim, Ji H.; Park, Mi-Jung; Lee, Eun S. 2018. "Electrocatalytic Activity of Pd/Ir/Sn/Ta/TiO2 Composite Electrodes." Energies 11, no. 12: 3356.
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