{
  "$type": "site.standard.document",
  "description": "The present invention provides a nickel-zinc battery of an inside-out structure, that is, a battery comprising a positive electrode containing beta-type nickel oxyhydroxide and a negative electrode containing zinc and having a similar structure to an alkali manganese battery, in which the beta-type…",
  "path": "/patents/1109002",
  "publishedAt": "2001-10-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/04",
    "SONY CORP [JP]"
  ],
  "textContent": "The present invention provides a nickel-zinc battery of an inside-out structure, that is, a battery comprising a positive electrode containing beta-type nickel oxyhydroxide and a negative electrode containing zinc and having a similar structure to an alkali manganese battery, in which the beta-type nickel oxyhydroxide consists of substantially spherical particles, mean particle size of which is within a range from 19µm to a maximum of 40µm, the bulk density of which is within a range from 1.6 g/cm 3 to a maximum of 2.2g/cm 3 , tap density of which is within a range from 2.2 g/cm 3 to a maximum of 2.7g/cm 3 , specific surface area which based on BET method is within a range from 3m 2 /g to a maximum of 50m 2 /g, and the positive electrode of the nickel zinc battery contains graphite powder, where the weight ratio of graphite powder against a total weight of the positive electrode is defined within a range from 4% to a maximum of 8%.",
  "title": "Positive electrode material and nickel-zinc battery"
}