{
  "$type": "site.standard.document",
  "description": "Hydrogen storage alloy powder, an anode, and a nickel-hydrogen rechargeable battery are provided, which are excellent in low-temperature characteristics and both in initial activity and cycle life at the same time, which properties are trading-off in conventional nickel-hydrogen rechargeable…",
  "path": "/patents/966182",
  "publishedAt": "2014-12-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B22F1/00",
    "SANTOKU CORP [JP]"
  ],
  "textContent": "Hydrogen storage alloy powder, an anode, and a nickel-hydrogen rechargeable battery are provided, which are excellent in low-temperature characteristics and both in initial activity and cycle life at the same time, which properties are trading-off in conventional nickel-hydrogen rechargeable batteries. The alloy powder has a composition represented by formula (1) R 1-a Mg a Ni b Al c M d (R: rare earth elements including Sc and Y, or the like; 0.005 ¤ a ¤ 0.40, 3.00 ¤ b ¤ 4.50, 0 ¤ c ¤ 0.50, 0 ¤ d ¤ 1.00, 3.00 ¤ b+c+d ¤ 4.50), and has an arithmetical mean roughness (Ra) of the powder particle outer surface of not less than 2 µm, or a crushing strength of not higher than 35, 000 gf/mm 2 .",
  "title": "HYDROGEN ABSORPTION ALLOY POWDER, NEGATIVE ELECTRODE, AND NICKEL-HYDROGEN SECONDARY CELL"
}