{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "To provide a secondary battery that is composed of resource-abundant materials, has high energy density, and is less likely to decrease in capacity even with charging and discharging repeated. The above-described problem is solved by a secondary battery comprising at least a positive electrode, a…",
  "path": "/patents/1423416",
  "publishedAt": "2026-06-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/5825",
    "ORLIB CO., LTD."
  ],
  "textContent": "To provide a secondary battery that is composed of resource-abundant materials, has high energy density, and is less likely to decrease in capacity even with charging and discharging repeated. The above-described problem is solved by a secondary battery comprising at least a positive electrode, a negative electrode, and an electrolyte. The positive electrode is an olivine-type phosphate, the negative electrode contains silicon or a silicon compound predoped with lithium, and a ratio of a capacity per unit area of the negative electrode to a capacity per unit area of the positive electrode (an AC ratio) is 1.5 or higher.",
  "title": "SECONDARY BATTERY"
}