Synthesis of coin-like hollow carbon and performance as Pd catalyst support for methanol electrooxidation |
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| Affiliation: | 1. Department of Chemistry and Institute of Nanochemistry, Jinan University, Guangzhou 510632, China;2. State Key Laboratories of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China;3. School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 639798, Singapore;4. School of Chemical Engineering, Chongqing University, Chongqing 400044, China;1. CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA;2. Department of Materials Science and Engineering, University of Central Florida, Orlando, FL 32816, USA;1. Department of Chemistry, Shaoxing University, Shaoxing, 312000, China;2. Department of Chemistry, Zhejiang University (XiXi Campus), Hangzhou, 310028, China;3. Institute of Materials Science, University of Connecticut, Storrs, CT, 06269, United States;1. Centro de Investigaciones Ópticas CONICET La Plata CIC, Camino Centenario y 506 s/n M.B. Gonnet (1897), Pcia Buenos Aires, Argentina;2. Departamento de Física de Materiales, Facultad de Ciencias C4, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain;1. Institut für Werkstoffe der Elektrotechnik II, RWTH Aachen University, Germany;2. Peter Grünberg Institut 7, Forschungszentrum Jülich GmbH, Jülich, Germany;3. Jara – Fundamentals for Future Information Technology, Jülich, Germany;1. College of Geography and Environmental Science, College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China;2. School of Chemistry and Biological Engineering, Suzhou University of Science and Technology, Suzhou 215009, China |
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| Abstract: | The coin-like hollow carbon (CHC) has been synthesized by only using ethanol as the carbon source with a novel Mg/NiCl2 catalytic system via a facile solvothermal method for the first time. The CHC synthesized at optimized conditions shows an average thickness of less than 154 nm and the coin diameter of 1–3 μm. The CHC is characterized by SEM, TEM, XRD and electrochemical techniques. Pd on CHC (denotes as Pd/CHC) electrocatalysts are prepared for methanol oxidation in alkaline media. The Pd/CHC electrocatalyst gives a mass activity of 2930 A g−1 Pd for methanol oxidation against 870 A g−1 Pd on Pd/C electrocatalyst. One main reason for the higher mass activity of the Pd/CHC is the higher electrochemical active surface area (EASA) of the Pd/CHC. |
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