{
  "$type": "site.standard.document",
  "description": "According to an embodiment of the present invention, an operating method of a fuel cell includes: an operating method of a fuel cell system, including: operation starting step without supplying fuel generating electricity at a predetermined voltage while stopping the supply of fuel; a voltage…",
  "path": "/patents/1008748",
  "publishedAt": "2011-10-12T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R31/36",
    "SAMSUNG SDI CO LTD [KR]"
  ],
  "textContent": "According to an embodiment of the present invention, an operating method of a fuel cell includes: an operating method of a fuel cell system, including: operation starting step without supplying fuel generating electricity at a predetermined voltage while stopping the supply of fuel; a voltage reducing step of reducing output voltage to targeted voltage; a current increasing rate measuring step of comparing the increasing rate of current with the increasing rate of targeted current; a fuel supply starting step of supplying fuel to the fuel cell stack; and a current following fuel supplying step of controlling fuel concentration and supplying it to be reached to the targeted current.",
  "title": "Operating method of fuel cell system"
}