Design and Synthesis of Bimetallic Electrocatalyst with Multilayered Pt-Skin Surfaces

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja2047655· OSTI ID:1024721

Wang, Chao ^[1]; Chi, Miaofang ^[2]; Li, Dongguo ^[1]; Strmcnik, Dusan ^[1]; Van der Vliet, Dennis ^[1]; Wang, Guofeng ^[3]; Komanicky, Vladimir ^[1]; Chang, Kee-Chul ^[1]; Paulikas, Arvydas ^[1]; Tripkovic, Dusan ^[1]; Pearson, John ^[1]; More, Karren Leslie ^[2]; Markovic, Nenad ^[1]; Stamenkovic, Vojislav ^[1]

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1. Argonne National Laboratory (ANL)
2. ORNL
3. Indiana University and Purdue University

Advancement in heterogeneous catalysis relies on the capability of altering material structures at the nanoscale, and that is particularly important for the development of highly active electrocatalysts with uncompromised durability. Here, we report the design and synthesis of a Pt-bimetallic catalyst with multilayered Pt-skin surface, which shows superior electrocatalytic performance for the oxygen reduction reaction (ORR). This novel structure was first established on thin film extended surfaces with tailored composition profiles and then implemented in nanocatalysts by organic solution synthesis. Electrochemical studies for the ORR demonstrated that after prolonged exposure to reaction conditions, the Pt-bimetallic catalyst with multilayered Pt-skin surface exhibited an improvement factor of more than 1 order of magnitude in activity versus conventional Pt catalysts. The substantially enhanced catalytic activity and durability indicate great potential for improving the material properties by fine-tuning of the nanoscale architecture.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Shared Research Equipment Collaborative Research Center
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1024721
• Journal Information: Journal of the American Chemical Society, Vol. 133, Issue 36; ISSN 0002--7863
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ARCHITECTURE
CATALYSTS
DESIGN
ELECTROCATALYSTS
HETEROGENEOUS CATALYSIS
OXYGEN
PERFORMANCE
SYNTHESIS
THIN FILMS