{
  "$type": "site.standard.document",
  "description": "Provision of an electrolytic copper alloy foil having large mechanical strength in an ordinary state and showing resistant to heat deterioration even when it is heated to 300°C or more. That electrolytic copper foil is an electrolytic copper alloy foil which contains tungsten and has a remainder…",
  "path": "/patents/982183",
  "publishedAt": "2013-11-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C22C1/02",
    "FURUKAWA ELECTRIC CO LTD [JP]"
  ],
  "textContent": "Provision of an electrolytic copper alloy foil having large mechanical strength in an ordinary state and showing resistant to heat deterioration even when it is heated to 300°C or more. That electrolytic copper foil is an electrolytic copper alloy foil which contains tungsten and has a remainder (balance) comprised of copper. Preferably, that electrolytic copper foil incorporates tungsten into copper foil as a copper alloy, has a tensile strength at ordinary temperature of 650 MPa, has a tensile strength after heat treatment at 300°C for 1 hour of 450 MPa or more, and has a conductivity of 80% or more. Further preferably, the electrolytic copper foil has an elongation at ordinary temperature of 2.5% or more and an elongation after treatment at 300°C for 1 hour of 3.5% or more. The electrolytic copper foil is produced by adding a thiourea compound, tungsten salt, and chloride ions to a sulfuric acid-copper sulfate electrolyte and performing electrolytic deposition.",
  "title": "ELECTROLYTIC COPPER ALLOY FOIL, METHOD FOR PRODUCING SAME, ELECTROLYTIC SOLUTION USED FOR PRODUCTION OF SAME, NEGATIVE ELECTRODE COLLECTOR FOR SECONDARY BATTERIES USING SAME, SECONDARY BATTERY, AND ELECTRODE OF SECONDARY BATTERY"
}