title: Graphene-Supported Mesoporous Carbons Prepared with Thermally Removable Templates as Efficient Catalysts for Oxygen Electroreduction.
abstract: Graphene-supported mesoporous carbons with rich nitrogen self-doped active sites (N-MC/rGO) are prepared by direct pyrolysis of a graphene-oxide-supported polymer composite embedded with massive, evenly distributed amorphous FeOOH that serve as efficient thermally removable templates. The resulting N-MC/rGO catalysts exhibit high surface areas and apparent electrocatalytic activity for oxygen reduction reaction in alkaline media. Among the series, the sample prepared at 800 °C displays the best performance with a more positive onset potential, higher limiting currents, much higher stability, and stronger poison resistance than commercial Pt/C. This is ascribed to the synergetic functions of the highly conductive graphene support and the mesoporous N-doped carbons that effectively impede the restacking of the graphene sheets and enhance the exposure of the rich nitrogen self-doped active sites.
authors.affiliation: New Energy Research Institute, College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
authors.forename: Wenhan
authors.initials: W
authors.lastname: Niu
authors.affiliation: New Energy Research Institute, College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
authors.forename: Ligui
authors.initials: L
authors.lastname: Li
authors.affiliation: New Energy Research Institute, College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
authors.forename: Ji
authors.initials: J
authors.lastname: Liu
authors.affiliation: New Energy Research Institute, College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Wang
authors.affiliation: New Energy Research Institute, College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.affiliation: New Energy Research Institute, College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
authors.forename: Zhenghua
authors.initials: Z
authors.lastname: Tang
authors.affiliation: New Energy Research Institute, College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
authors.forename: Weijia
authors.initials: W
authors.lastname: Zhou
authors.affiliation: New Energy Research Institute, College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.|Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA, 95064, USA.
authors.forename: Shaowei
authors.initials: S
authors.lastname: Chen
keywords: catalysts; graphene; mesoporous carbon; nitrogen doping; oxygen reduction