Affiliation:
1. Yantai Nanshan University
2. Zibo Ferro Performance Material Co. , Ltd.
3. Nanshan Institute of Science and Technology
Abstract
In this work, the Cu-alginate/graphene aerogels were prepared by using alginate, graphene and copper chloride as precursors by a freeze-drying process. Finally, N-doped carbon aerogels supported by Cu nanoparticles (NPs) (Cu/N-CAs) were obtained through annealing in the NH3 atmosphere. The morphology, microstructures, specific surface area, and pore size distribution were studied by SEM, XRD, and BET analysis. The results showed that a significant amount of Cu NPs were uniformly disseminated on the aerogels’ surface, and the catalysts’ specific surface area reached 141 m2/g. Electrochemical tests revealed good catalytic capabilities for the oxygen reduction reaction (ORR) of the as-obtained Cu/N-CAs. Compared to the commercial 20%Pt/C, the Cu/N-CAs exhibited comparable catalytic performance, superior catalytic stability and methanol resistance. The transfer of 3.94 electrons indicated that the Cu/N-CAs were undergoing a four-electron (4e-) ORR process.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference19 articles.
1. H. J. Chen, M. H. Tang, and S. L. Chen, Hydrophobicity Optimization of Cathode Catalyst Layer of Proton Exchange Membrane Fuel Cell, J. Electrochem., pp.1-19, (2022).
2. Developments in fuel cell technologies in the transport sector;Alaswad;International Journal of Hydrogen Energy
3. W. H. Chen, and S. L. Chen, Effect of Ink Solvents on Low-Pt Loading Proton Exchange Membrane Fuel Cell Performance, Acta Phys-Chim Sin., vol. 35, no. 5, pp.517-522, (2019) .
4. A New Fuel Cell Cathode Catalyst;JASINSKI;Nature
5. Heat-treated polyacrylonitrile-based catalysts for oxygen electroreduction;Gupta;Journal of Applied Electrochemistry