{
  "$type": "site.standard.document",
  "description": "A valve-regulated lead-acid battery of this invention includes: an electrode plate group; and an electrolyte impregnated into and retained by the electrode plate group. The electrode plate group includes: positive electrode plates that each include a positive electrode current collector comprising…",
  "path": "/patents/1077641",
  "publishedAt": "2005-05-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C22C11/00",
    "MATSUSHITA ELECTRIC INDUSTRIAL CO LTD [JP]"
  ],
  "textContent": "A valve-regulated lead-acid battery of this invention includes: an electrode plate group; and an electrolyte impregnated into and retained by the electrode plate group. The electrode plate group includes: positive electrode plates that each include a positive electrode current collector comprising a Sn-containing lead alloy, and a positive electrode active material retained by the positive electrode current collector; negative electrode plates that each include a negative electrode current collector comprising a lead alloy, and a negative electrode active material retained by the negative electrode current collector; and separators. The Sn content in the positive electrode current collector is 1.1 to 3.0 % by mass, and the pore volume per unit mass of the negative electrode active material is 0.115 to 0.150 cm/g. [0002] By employing the above configuration, the negative electrode plate has a stable oxygen-absorbing ability, and the corrosion of the current collector of the positive electrode plate is suppressed, so that it is possible to obtain a valve-regulated lead-acid battery with a stable long life.",
  "title": "CONTROL VALVE TYPE LEAD BATTERY"
}