• 文献标题:   Investigation of catalytic activity towards oxygen reduction reaction of Pt dispersed on boron doped graphene in acid medium
  • 文献类型:   Article
  • 作  者:   ASHOK P, RAMAPRABHU S
  • 作者关键词:   boron doped graphene bg, electrocatalyst, nanoparticles nps, proton exchange membrane fuel cells pemfcs, tafel slope, oxygen reduction reaction orr
  • 出版物名称:   JOURNAL OF COLLOID INTERFACE SCIENCE
  • ISSN:   0021-9797 EI 1095-7103
  • 通讯作者地址:   Indian Inst Technol
  • 被引频次:   15
  • DOI:   10.1016/j.jcis.2016.06.069
  • 出版年:   2016

▎ 摘  要

Boron doped graphene was prepared by a facile method and platinum (Pt) decoration over boron doped graphene was done in various chemical reduction methods such as sodium borohydride (NaBH4), polyol and modified polyol. X-ray diffraction analysis indicates that the synthesized catalyst particles are present in a nanocrystalline structure and transmission and scanning electron microscopy were employed to investigate the morphology and particle distribution. The electrochemical properties were investigated with the help of the rotating disk electrode (RDE) technique and cyclic voltammetry. The results show that the oxygen reduction reaction (ORR) takes place by a four-electron process. The kinetics of the ORR was evaluated using K-L and Tafel plots. The electrocatalyst obtained in modified polyol reduction method has shown the better catalytic activity compared to other two electrocatalysts. (C) 2016 Elsevier Inc. All rights reserved.