• 文献标题:   Enhanced methanol electro-oxidation over in-situ carbon and graphene supported one dimensional NiMoO4 nanorods
  • 文献类型:   Article
  • 作  者:   JOTHI PR, KANNAN S, VELAYUTHAM G
  • 作者关键词:   methanol electrooxidation, nonnoble metal, electrocatalyst, dmfc
  • 出版物名称:   JOURNAL OF POWER SOURCES
  • ISSN:   0378-7753 EI 1873-2755
  • 通讯作者地址:   Anna Univ
  • 被引频次:   41
  • DOI:   10.1016/j.jpowsour.2014.11.137
  • 出版年:   2015

▎ 摘  要

Non-precious NiMoO4 nanorods with carbon and graphene have been designed for methanol oxidation via one pot hydrothermal method. The physicochemical and electrocatalytic features of these catalysts are characterized. Among the three catalysts, carbon modified NiMoO4 shows an enhanced catalytic activity in terms of current density, onset potential, cyclic stability and high tolerance to intermediate towards methanol electro-oxidation. Moreover, the NiMoO4/C catalyst delivers a current density of 49 mA cm(-2) at low onset potential of 0.45 V (vs. Hg/HgO) in 1 M KOH and 2.0 M methanol electrolyte. This greater electrocatalytic activity is attributed to the unique 1D microstructure of NiMoO4 nanorods with well distributed carbonaceous material, which enhances the efficient transport of electron/ion kinetics at the electrode and electrolyte interfaces. From this observation, it is concluded that the carbon modified NiMoO4 nanorods could be a promising alternate non-noble electrocatalysts for direct methanol fuel cell (DMFC) applications. (C) 2014 Elsevier B.V. All rights reserved.