Highly efficient AuPd–WC/C electrocatalyst for ethanol oxidation |
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| Institution: | 1. State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China;2. School of Chemical Engineering, Chongqing University, Chongqing 400044, PR China;3. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China;4. School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore;1. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China;2. School of Physics, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China;3. Advanced Materials Research Institute, University of New Orleans, USA;1. Department of Materials Science & Engineering, College of Engineering, Peking University, Beijing, 100871, China;2. Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, 999077, Hong Kong SAR, China;3. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China;4. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, China;5. BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China;6. Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, China;1. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450000, PR China;2. Department of Mechanical and Materials Engineering, The University of Western Ontario, ON, N6A 5B9, Canada;1. Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, MH, India;2. National Centre for Nanosciences and Nanotechnology, University of Mumbai, Mumbai 400098, (MH) India;3. Department of Chemistry, Shivaji University, Kolhapur, 416004, MH, India |
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| Abstract: | A composite material of AuPd–WC/C has been rapidly prepared by the intermittent microwave heating (IMH) method. The material is nanostructured and well dispersed on carbon according to the SEM and TEM measurements. The activity of the AuPd–WC/C electrocatalyst for the oxidation of ethanol in alkaline solution is significantly higher than that of Pt/C at the same total electrocatalyst loadings. The onset potential shifts towards negative side for 200 mV and the peak current density increases ～3 times for the ethanol oxidation reaction on AuPd–WC/C electrocatalysts as compared to that on Pt/C. In addition, the AuPd–WC/C electrocatalyst is more stable under constant current density polarization than that of Pt/C. It indicates that no strongly adsorbed species formed during the oxidation of ethanol on AuPd–WC/C because the cleavage of the C–C bond of the ethanol is difficult on this Pt-free electrocatalyst. The high activity makes AuPd–WC/C electrocatalyst a potential candidate for the application in direct ethanol fuel cells and ethanol sensors. |
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