{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "Provided is a lithium ion secondary battery in which a high-energy type negative electrode is used, the lithium ion secondary battery having high capacity and excellent thermal stability. A secondary battery according to the present embodiment comprises: an electrode element having a positive…",
  "path": "/patents/988964",
  "publishedAt": "2013-07-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/052",
    "NEC CORP [JP]"
  ],
  "textContent": "Provided is a lithium ion secondary battery in which a high-energy type negative electrode is used, the lithium ion secondary battery having high capacity and excellent thermal stability. A secondary battery according to the present embodiment comprises: an electrode element having a positive electrode and a negative electrode opposed each other; an electrolyte; and an outer casing containing the electrode element and the electrolyte, wherein the negative electrode comprises a negative electrode active material, which includes at least one of a metal (a) capable of alloying with lithium and a metal oxide (b) capable of occluding and releasing lithium ions, is bonded to a negative electrode current collector by a negative electrode bonding agent, and the electrolyte comprises 70¼99 vol% of a phosphoric acid ester compound and 1¼15 vol% of a fluorinated carbonate compound. A secondary battery electrolyte according to the present embodiment includes 70¼99 vol% of a phosphoric acid ester compound and 1¼15 vol% of a fluorinated carbonate compound.",
  "title": "SECONDARY BATTERY AND SECONDARY BATTERY ELECTROLYTE USED THEREIN"
}