文献类型：期刊文献

英文题名：Platinum/nitrogen-doped carbon nanoparticles synthesized in nitrogen-doped carbon quantum dots aqueous solution for methanol electro-oxidation

作者：Zhang, Aofeng[1]; Li, Xingwei[1]; He, Ying[1]

机构：[1] Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2016

卷号：213

起止页码：332

外文期刊名：Electrochimica Acta

收录：EI(收录号：20163102664946)

语种：英文

外文关键词：Methanol - Solutions - Catalyst activity - Synthesis (chemical) - Catalyst supports - Catalytic oxidation - Doping (additives) - Methanol fuels - Direct methanol fuel cells (DMFC) - Electrooxidation - Carbon black - Nanocrystals - Nitrogen - Semiconductor quantum dots

摘要：Platinum-based catalysts are a key to develop direct methanol fuel cells, which are usually dispersed on carbon supports to enhance catalytic activity, stability and utilization. Here, platinum/nitrogen-doped carbon (Pt/N-C) nanoparticles are synthesized in nitrogen-doped carbon quantum dots (N-CQDs) aqueous solution, and catalytic performance of Pt/N-C catalysts is researched for methanol electro-oxidation. Compared with Pt catalysts supported on commercial carbon black Vulcan XC-72 (Pt/XC-72), the peak current densities of Pt/N-C catalysts are 0.59mAcm?2 Pt and 385.2Ag?1 Pt in 0.5M CH3OH and 0.5M H2SO4, while those of Pt/XC-72 catalysts are 0.39mAcm?2 Pt and 64.8Ag?1 Pt. After polarizing 7200s at a fixed potential of 0.15V (vs. Hg/Hg2SO4), the catalytic activities of Pt/N-C are 0.14mAcm?2 Pt and 86.5Ag?1 Pt, and those of Pt/XC-72 are 0.02mAcm?2 Pt and 2.6Ag?1 Pt. ? 2016 Elsevier Ltd