{
  "$type": "site.standard.document",
  "description": "The present invention relates to a catalyst for solid polymer fuel cells in which catalyst particles including platinum are supported on a carbon powder carrier. The invention provides a catalyst for solid polymer fuel cells in which the ratio of zerovalent platinum to platinum present on the…",
  "path": "/patents/1290325",
  "publishedAt": "2021-05-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/926",
    "TANAKA KIKINZOKU KOGYO K.K."
  ],
  "textContent": "The present invention relates to a catalyst for solid polymer fuel cells in which catalyst particles including platinum are supported on a carbon powder carrier. The invention provides a catalyst for solid polymer fuel cells in which the ratio of zerovalent platinum to platinum present on the surfaces of the catalyst particles is 80% or more and 100% or less. In the platinum catalyst, excellent durability is exhibited in an environment of operating a solid polymer fuel cell, and the amount of platinum eluted at the time of immersing the catalyst in a predetermined sulfuric acid solution is lower as compared to conventional platinum catalysts. The invention provides a catalyst for solid polymer fuel cells excellent in both initial activity and durability.",
  "title": "CATALYST FOR SOLID POLYMER FUEL CELLS AND METHOD FOR PRODUCING THE SAME"
}