Microwave-assisted synthesis of sulfur-doped graphene supported PdW nanoparticles as a high performance electrocatalyst for the oxygen reduction reaction |
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| Affiliation: | 1. School of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China;2. School of Materials and School of Chemistry, University of Manchester, Oxford Road, M13 9PL, UK;1. College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China;2. State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China;3. Western Regional Research Center, ARS, USDA, Albany, CA 94710, United States |
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| Abstract: | Sulfur-doped graphene (SG) is synthesized by a simple microwave irradiation method and PdW nanoparticles are grown in situ on SG. The electrocatalyst shows excellent activity for the oxygen reduction reaction (ORR) in alkaline solution and the reaction kinetics investigation shows that PdW-SG follows a four-electron transfer process in ORR, which is much better than Pd-SG or Pd-G. The improved catalytic performance may result from the changes in the electronic structure when Pd alloys with W as well as the strong interactions between the PdW nanoparticles and SG. |
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