{
  "$type": "site.standard.document",
  "description": "Seal means (40) for sealing a bipolar plate (18,18') to a membrane (14) in a PEM fuel cell stack (10',10\"). The seal (40) includes a thin layer of a cross-linkable silicone composition disposed between the bipolar plate and the membrane. The layer is applied as a liquid to either the plate (18) or…",
  "path": "/patents/1084411",
  "publishedAt": "2004-09-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M8/0271",
    "DELPHI TECH INC [US]"
  ],
  "textContent": "Seal means (40) for sealing a bipolar plate (18,18') to a membrane (14) in a PEM fuel cell stack (10',10\"). The seal (40) includes a thin layer of a cross-linkable silicone composition disposed between the bipolar plate and the membrane. The layer is applied as a liquid to either the plate (18) or the membrane (14) and preferably is polymerized prior to assembly of the stack. A preferred means for applying the composition to the bipolar plate is screen printing. Preferably, the layer has a thickness between .001 and .005 inch. The resulting fuel cell stack (10',10\") exhibits superior leak resistance. In a currently preferred embodiment, a layer (40,40') of the silicone composition is provided at interfaces between a membrane (14) and both an anode side and a cathode side of a bipolar plate (18,18').",
  "title": "Silicone seal for bipolar plates in a pem fuel cell"
}