{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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  "description": "The purpose of the present invention is to provide a lithium secondary battery having an excellent cycle characteristic. A lithium secondary battery according to an embodiment includes a positive electrode, and a negative electrode not having a negative electrode active material. The negative…",
  "path": "/patents/1397447",
  "publishedAt": "2026-01-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0585",
    "TERAWATT TECH K K [JP]"
  ],
  "textContent": "The purpose of the present invention is to provide a lithium secondary battery having an excellent cycle characteristic. A lithium secondary battery according to an embodiment includes a positive electrode, and a negative electrode not having a negative electrode active material. The negative electrode is configured as Cu having a surface roughness maximum height Rz of 1.0 µm or less and an orientation plane of a (200) plane or a (220) plane.",
  "title": "LITHIUM SECONDARY BATTERY"
}