• 文献标题:   Pt loaded two-dimensional TaC-nanosheet/graphene hybrid as an efficient and durable electrocatalyst for direct methanol fuel cells
  • 文献类型:   Article
  • 作  者:   HE CY, TAO JZ
  • 作者关键词:   twodimensional, transition metal carbide, electrocatalyst, methanol oxidation reaction, direct methanol fuel cell
  • 出版物名称:   JOURNAL OF POWER SOURCES
  • ISSN:   0378-7753 EI 1873-2755
  • 通讯作者地址:   Chinese Acad Sci
  • 被引频次:   21
  • DOI:   10.1016/j.jpowsour.2016.05.105
  • 出版年:   2016

▎ 摘  要

Poor electrocatalytic activity, insufficient operation durability and low carbon monoxide (CO) tolerance of the Pt-based catalysts are key challenges facing the direct methanol fuel cells (DMFCs) as promising electrochemical energy conversion device. We here present a new effort to catalyst designed by depositing Pt nanoparticles on two-dimensional (2D) TaC-nanosheet/graphene hybird (Pt/TaC-G) to obtain notable improvement in electrocatalytic performance over the commercial Pt/C. Experiment results from both X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS) support that a strong synergetic chemical coupling interaction between the Pt nanoparticles and the 2D TaC-G significantly enhanced electrocatalytic activity for methanol oxidation reaction (MOR). This process can improve the CO tolerance as well as durability of MOR catalysts simultaneously, making it a promising general approach to design and optimize the next generation electrocatalysts in DMFCs. (C) 2016 Elsevier B.V. All rights reserved.