A synergistic, platinum-cobalt (Pt-Co) catalyst with high catalytic activity and durability at ultralow Pt loading was created for fuel cell applications; modeling confirmed Pt-Co interactions with the precious metal-free support play a significant role in the performance improvements.
Significance and Impact
The synergistic catalysts reached mass activities of 1.08-1.77 A mgPt-1 which exceed the 2025 U.S. DOE target of 0.44 A mgPt-1 for fuel cells.
- Design, synthesis and testing were performed in Argonne’s CSE Division; XAFS/XANES were performed at the APS.
- Characterization at the CNM included aberration-corrected high-resolution transmission electron microscopy (HRTEM) with EDS and EELS; first-principles DFT modeling was performed on the CNM Carbon computing cluster.
Work was performed in part at the Center for Nanoscale Materials and Advanced Photon Source.
About Argonne’s Center for Nanoscale Materials
The Center for Nanoscale Materials is one of the five DOE Nanoscale Science Research Centers, premier national user facilities for interdisciplinary research at the nanoscale supported by the DOE Office of Science. Together the NSRCs comprise a suite of complementary facilities that provide researchers with state-of-the-art capabilities to fabricate, process, characterize and model nanoscale materials, and constitute the largest infrastructure investment of the National Nanotechnology Initiative. The NSRCs are located at DOE’s Argonne, Brookhaven, Lawrence Berkeley, Oak Ridge, Sandia and Los Alamos National Laboratories. For more information about the DOE NSRCs, please visit https://science.osti.gov/User-Facilities/User-Facilities-at-a-Glance.
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