• 文献标题:   Investigation of ORR Performances on Graphene/Phthalocyanine Nanocomposite in Neutral Medium
  • 文献类型:   Article
  • 作  者:   MUKHERJEE M, SAMANTA M, DAS GP, CHATTOPADHYAY KK
  • 作者关键词:   neutral medium, orr, rgo, zinc phthalocyanine
  • 出版物名称:   MICROSCOPY MICROANALYSIS
  • ISSN:   1431-9276 EI 1435-8115
  • 通讯作者地址:   Indian Assoc Cultivat Sci
  • 被引频次:   5
  • DOI:   10.1017/S1431927619000643
  • 出版年:   2019

▎ 摘  要

The drive to replace scarce and expensive Pt-based electrocatalysts for oxygen reduction reaction (ORR) has led to the development of a group of electrocatalysts composed of transition-metal ion centers coordinated with four nitrogen groups (M-N-4). Among these, metal phthalocyanines (MPcs), due to low cost of preparation, highly conjugated structure as well as high thermal and chemical stability, have received a great interest. The catalytic activity of MPcs can be improved by employing conducting supports. Here, in this report, we have solvothermally synthesized graphene-supported zinc phthalocyanine nanostructures, and their ORR kinetics and mechanism have been investigated in neutral solution (pH = 7) by using the rotating disk electrode technique. The as-synthesized nanocomposite followed a 4e(-) reduction pathway. The onset potential (-0.04 V versus Ag/AgCl) found in this work can be comparable with other state-of-the-art material, demonstrating good performance in neutral solution. The fascinating performance leads the nanocomposite material toward future energy applications.