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Effect of Ti sublayer on the ORR catalytic efficiency of dc magnetron sputtered thin Pt films

Ozturk, Osman; Ozdemir, Oguz Kaan; Ulusoy, Isilay; Ahsen, Ali Sems; Slavcheva, Evelina


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{
  "DOI": "10.1016/j.ijhydene.2010.02.077", 
  "abstract": "A series of thin Pt films were deposited by dc magnetron sputtering directly on a commercial hydrophobic carbon paper substrate having a thin microporous Vulcan-XC72 layer or upon a thin Ti sublayer sputtered on the top of the microporous carbon film. The electrocatalytic properties of the sputtered Pt films toward the oxygen reduction reaction were investigated in 0.5 M H2SO4 solution and in a hydrogen PEM fuel cell. The catalyst with ultralow Pt loading of 22 mu g cm(-2) deposited on a 33 angstrom thick Ti sublayer is robust, mechanically stable, possesses highly developed surface area and improved catalytic efficiency. Its performance as a MEA cathode in a single hydrogen PEM fuel cell (577 mA cm(-2) at 0.4 V cell voltages and a maximum power of 0.954W) proved to be much superior compared to that of MEA with the same cathode Pt loading but without Ti sublayer (173 mA cm(-2) at 0.4 V, 0.231W, respectively). (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.", 
  "author": [
    {
      "family": "Ozturk", 
      "given": " Osman"
    }, 
    {
      "family": "Ozdemir", 
      "given": " Oguz Kaan"
    }, 
    {
      "family": "Ulusoy", 
      "given": " Isilay"
    }, 
    {
      "family": "Ahsen", 
      "given": " Ali Sems"
    }, 
    {
      "family": "Slavcheva", 
      "given": " Evelina"
    }
  ], 
  "container_title": "INTERNATIONAL JOURNAL OF HYDROGEN ENERGY", 
  "id": "27811", 
  "issue": "10", 
  "issued": {
    "date-parts": [
      [
        2010, 
        1, 
        1
      ]
    ]
  }, 
  "page": "4466-4473", 
  "title": "Effect of Ti sublayer on the ORR catalytic efficiency of dc magnetron sputtered thin Pt films", 
  "type": "article-journal", 
  "volume": "35"
}
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