Dergi makalesi Açık Erişim
Yazici, M. Suha; Azder, M. Akif; Salihoglu, Omer; San, F. Gul Boyaci
{ "DOI": "10.1016/j.ijhydene.2018.06.020", "abstract": "Continuous-phase, porous graphene was produced by CVD process and tested for suitability as catalyst and catalyst support for polymer electrolyte membrane (PEM) fuel cells. N-doping of CVD graphene was carried by NH3 gas flown over graphene for a given time. Ultralow Pt was sputter deposited onto porous, continuous phase N-doped graphene. Oxygen reduction reaction (ORR) activity by Rotating Disc Electrode (RDE) in 0,1 M HClO4 electrolyte and PEM fuel cell performance were measured. N-doping and thicker Pt sputtering increases reduction current in RDE measurements. Sputter deposition of 1 nm and 10 nm Pt on CVD graphene (2.1 and 21.45 mu gPt/cm(2) loading) has shown orders of magnitude increase in current compare to only-graphene samples. In fuel cell testing, sputter deposited Pt layer of 10 nm has provided 2.5 A/mgPt at 0.5 V polarization while 1 nm samples shows 15 A/mgPt performance at the same voltage. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.", "author": [ { "family": "Yazici", "given": " M. Suha" }, { "family": "Azder", "given": " M. Akif" }, { "family": "Salihoglu", "given": " Omer" }, { "family": "San", "given": " F. Gul Boyaci" } ], "container_title": "INTERNATIONAL JOURNAL OF HYDROGEN ENERGY", "id": "93139", "issue": "40", "issued": { "date-parts": [ [ 2018, 1, 1 ] ] }, "page": "18572-18577", "title": "Ultralow Pt loading on CVD graphene for acid electrolytes and PEM fuel cells", "type": "article-journal", "volume": "43" }
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