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dc.contributor.authorYing, Je
dc.contributor.authorLi, Jing
dc.contributor.authorJiang, Gaopeng
dc.contributor.authorCano, Zachary Paul
dc.contributor.authorMa, Zhong
dc.contributor.authorZhong, Cheng
dc.contributor.authorSu, Dong
dc.contributor.authorChen, Zhongwei 15:33:54 (GMT) 15:33:54 (GMT)
dc.descriptionThe final publication is available at Elsevier via © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
dc.description.abstractPt-based nanomaterials are regarded as the most efficient electrocatalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). However, widespread adoption of PEMFCs requires solutions to major challenges encountered with ORR catalysts, namely high cost, sluggish kinetics, and low durability. Herein, a new efficient method utilizing Co-based metal-organic frameworks is developed to produce PtCo bimetallic nanoparticles embedded in unique nitrogen-doped hollow porous carbon capsules. The obtained catalyst demonstrates an outstanding ORR performance, with a mass activity that is 5.5 and 13.5 times greater than that of commercial Pt/C and Pt black, respectively. Most importantly, the product exhibits dramatically improved durability in terms of both electrochemically active surface area (ECAS) and mass activity compared to commercial Pt/C and Pt black catalysts. The remarkable ORR performance demonstrated here can be attributed to the structural features of the catalyst (its alloy structure, high dispersion and fine particle size) and the carbon support (its nitrogen dopant, large surface area and hollow porous structure).en
dc.description.sponsorshipThis work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC), the University of Waterloo, and the Waterloo Institute for Nanotechnology. The authors greatly acknowledge the Catalysis Research for Polymer Electrolyte Fuel Cells (CaRPE FC) Network administered from Simon Fraser Grant No. APCPJ 417858-11 through NSERC. TEM imaging was performed at the Canadian Center for Electron Microscopy (CCEM) located at McMaster University. Part of EM work was performed at the Center for Functional Nanomaterials, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy (DOE), Office of Basic Energy Science, under Contract No. DE-SC0012704.en
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.subjectPtCo bimetallic nanoparticlesen
dc.subjectMetal-organic frameworksen
dc.subjectHollow porous capsulesen
dc.subjectOxygen reduction reactionen
dc.titleMetal-organic frameworks derived platinum-cobalt bimetallic nanoparticles in nitrogen-doped hollow porous carbon capsules as a highly active and durable catalyst for oxygen reduction reactionen
dcterms.bibliographicCitationYing, J., Li, J., Jiang, G., Cano, Z. P., Ma, Z., Zhong, C., … Chen, Z. (2018). Metal-organic frameworks derived platinum-cobalt bimetallic nanoparticles in nitrogen-doped hollow porous carbon capsules as a highly active and durable catalyst for oxygen reduction reaction. Applied Catalysis B: Environmental, 225, 496–503.
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Chemical Engineeringen

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