• 文献标题:   Mesoporous graphene-like nanobowls as Pt electrocatalyst support for highly active and stable methanol oxidation
  • 文献类型:   Article
  • 作  者:   YAN ZX, HE GQ, JIANG ZF, WEI W, GAO LN, XIE JM
  • 作者关键词:   mesoporous graphenelike nanobowl, pt electrocatalyst, methanol oxidation reaction, promotion effect, poison resistance
  • 出版物名称:   JOURNAL OF POWER SOURCES
  • ISSN:   0378-7753 EI 1873-2755
  • 通讯作者地址:   Jiangsu Univ
  • 被引频次:   17
  • DOI:   10.1016/j.jpowsour.2015.03.083
  • 出版年:   2015

▎ 摘  要

Mesoporous graphene-like nanobowls (GLBs) with high surface area of 1091 m(2) g(-1), high pore volume of 2.7 cm(3) g(-1) and average pore diameter of 9.8 nm are synthesized through template method. The GLBs with inherent excellent electrical conductivity and chemical inertia show the properties of well, mass transfer, poison resistance and stable loading of smaller Pt particles. Therefore, the Pt/GLB catalyst shows much higher activity and stability than that of commercial Pt/C (TICK) for methanol oxidation reaction (MOR). Therein, the peak current density on Pt/GLB (2075 mA mg(Pt)(-1)) for MOR is 2.87 times that of commercial Pt/C (723 mA mg(Pt)(-1)); and the onset potential for the MOR on the former is negatively shifted about 160 mV compared with that on the latter. The catalytic performances of the Pt/GLB are also better than those of the Pt loading on mesoporous amorphous carbon nanobowls (Pt/BLC), indicating promotion effect of graphite on Pt catalytic performance. (C) 2015 Elsevier B.V. All rights reserved.