• 文献标题:   Graphene-supported platinum catalyst prepared with ionomer as surfactant for anion exchange membrane fuel cells
  • 文献类型:   Article
  • 作  者:   ZENG L, ZHAO TS, AN L, ZHAO G, YAN XH, JUNG CY
  • 作者关键词:   fuel cell, anion exchange ionomer, platinum nanoparticle, electrocatalyst, high distribution
  • 出版物名称:   JOURNAL OF POWER SOURCES
  • ISSN:   0378-7753 EI 1873-2755
  • 通讯作者地址:   Hong Kong Univ Sci Technol
  • 被引频次:   17
  • DOI:   10.1016/j.jpowsour.2014.11.021
  • 出版年:   2015

▎ 摘  要

In this work, we have synthesized an ionomer-coated graphene-supported platinum catalyst for anion exchange membrane fuel cells. Unlike the common surfactant stabilized colloidal method, we employ a home-made anion exchange ionomer (AEI), namely quaternary ammonia poly (2, 6-dimethyl-1, 4-phenylene oxide) (QAPPO), as the surfactant. The AEI coated on reduced graphene oxide (rGO) surfaces serves as a stabilizer to anchor the platinum precursor on rGO surfaces due to electrostatic interactions. As a result, platinum nanoparticles (Pt NPs) can be easily deposited onto rGO surfaces with a uniform distribution. The remarkable feature of the present synthesis method is that the surfactant, the coated AEI, does not need to be removed from the catalyst, but serves as hydroxide-conductive paths in the catalyst layer, leading to enhanced triple phase boundaries. It is demonstrated that the use of the catalyst obtained with the present method enables a H-2/O-2 AEMFC to yield a peak power density of 264.8 mW cm(-2) at 60 degrees C, which is 30% higher than that produced from the same fuel cell but with the use of the catalyst synthesized by the conventional synthesis method. (C) 2014 Elsevier B.V. All rights reserved.