Article Cite This: ACS Appl. Energy Mater. XXXX, XXX, XXX−XXX
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Suppression of Carbon Monoxide Poisoning in Proton Exchange Membrane Fuel Cells via Gold Nanoparticle/Titania Ultrathin Film Heterogeneous Catalysts Likun Wang,† Yuchen Zhou,† Yuanxi Yang,† Ashwanth Subramanian,† Kim Kisslinger,‡ Xianghao Zuo,† Ya-Chen Chuang,† Yifan Yin,† Chang-Yong Nam,*,†,‡ and Miriam H. Rafailovich*,† †
Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
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S Supporting Information *
ABSTRACT: Titania (TiO2)-supported gold (Au) nanoparticles (NPs) have long been considered as a promising solution for carbon monoxide (CO) poisoning in proton exchange membrane fuel cells (PEMFCs) as they can efficiently catalyze CO oxidation reaction. Nevertheless, the actual application in functioning PEMFCs has been rarely reported primarily due to the challenges of synthesizing and incorporating the oxidation catalyst in manners compatible with the structure and fabrication of PEMFCs. Here we successfully incorporate the Au NPs/TiO2 catalyst into PEMFCs and demonstrate an excellent CO elimination function, improving the performance and CO tolerance of PEMFCs; we combine an ultrathin TiO2 layer (
