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Ultralow Pt loading on CVD graphene for acid electrolytes and PEM fuel cells

Yazici, M. Suha; Azder, M. Akif; Salihoglu, Omer; San, F. Gul Boyaci


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{
  "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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