{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "The provision of a porous electrode substrate that has large sheet strength, low production costs, high handling properties, high thickness precision and surface smoothness, and sufficient gas permeability and electrical conductivity. A porous electrode substrate including a three-dimensional…",
  "path": "/patents/997674",
  "publishedAt": "2012-10-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/8605",
    "MITSUBISHI RAYON CO [JP]"
  ],
  "textContent": "The provision of a porous electrode substrate that has large sheet strength, low production costs, high handling properties, high thickness precision and surface smoothness, and sufficient gas permeability and electrical conductivity. A porous electrode substrate including a three-dimensional entangled structure including short carbon fibers (A) dispersed in a three-dimensional structure, joined together via three-dimensional mesh-like carbon fibers (B). A method for producing a porous electrode substrate, including a step (1) of producing a precursor sheet including short carbon fibers (A), and short carbon fiber precursors (b) and/or fibrillar carbon fiber precursors (b') dispersed in a two-dimensional plane; a step (2) of subjecting the precursor sheet to entanglement treatment; and a step (3) of subjecting this sheet to carbonization treatment at 1000°C or higher. It is preferable to include a step (4) of subjecting the sheet to hot press forming at lower than 200°C between step (2) and step (3), and to further include a step (5) of subjecting the sheet after hot press forming to oxidation treatment at 200°C or higher and lower than 300°C between step (4) and step (3).",
  "title": "POROUS ELECTRODE BASE MATERIAL, PROCESS FOR PRODUCTION THEREOF, PRECURSOR SHEET, FILM-ELECTRODE ASSEMBLY, AND SOLID POLYMER FUEL CELL"
}