Journal
FRONTIERS IN ENERGY RESEARCH
Volume 8, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fenrg.2020.00060
Keywords
Rhodium; graphene aerogel; three-dimensional networks; electrocatalyst; fuel cells
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Funding
- National Natural Science Foundation of China [51802077]
- Fundamental Research Funds for the Central Universities [2019B16214]
- China Postdoctoral Science Foundation [2015M580387, 2016T90414]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1601026A]
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The exploration and development of highly-efficient Pt-alternative catalysts with acceptable costs are very essential for the large-scale commercial applications of direct methanol fuel cell (DMFC) technology. Herein, we demonstrate a facile and cost-effective self-assembly approach to the bottom-up fabrication of Rh-decorated three-dimensional graphene aerogel (Rh/3D-GA) networks as efficient DMFC anode catalysts. With the distinct textural features including large surface area, 3D porous structure, uniform Rh dispersion, and good electron conductivity, the resultant Rh/3D-GA hybrid architecture shows superior electrocatalytic properties toward methanol oxidation reaction, such as large electrochemically active surface area, low onset potential, high mass activity as well as excellent long-term stability, all of which are more competitive than those of Rh catalysts deposited on conventional carbon black, carbon nanotubes, and two-dimensional graphene supports.
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