• 文献标题:   Substrate-Assisted Deposition of Metal Oxides on Three-Dimensional Porous Reduced Graphene Oxide Networks as Bifunctional Hybrid Electrocatalysts for the Oxygen Evolution and Oxygen Reduction Reactions
  • 文献类型:   Article
  • 作  者:   ZHAO MJ, LI XX, SONG L, HE D, ZHANG ZP
  • 作者关键词:   bifunctional catalyst, cobalt, graphene oxide, nanostructure, nickel
  • 出版物名称:   CHEMCATCHEM
  • ISSN:   1867-3880 EI 1867-3899
  • 通讯作者地址:   Beijing Inst Technol
  • 被引频次:   8
  • DOI:   10.1002/cctc.201600562
  • 出版年:   2016

▎ 摘  要

The oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) are of great importance for energy conversion processes, such as water electrolysis, metal-air batteries, and fuel cells. Herein, we report a substrate-assisted in situ reduction method to prepare three-dimensional reduced graphene oxide (3DRGO) networks decorated with a range of mixed cobalt oxide and nickel oxide nanosheets as a new type of bifunctional catalyst for oxygen evolution and oxygen reduction. Among the different composite catalysts, Co3O4@3DRGO showed highest catalytic activities in OER and ORR with an excellent stability. This catalyst is used to catalyze the oxygen reactions in a Zn-air battery as a proof-of-concept. The current results render new insights into developing low-cost, next-generation bifunctional catalysts for photoelectrochemical cells for energy storage and conversion.