{
  "$type": "site.standard.document",
  "description": "A negative electrode for a nonaqueous electrolyte secondary battery includes a negative electrode current collector and a negative electrode mixture layer formed on the negative electrode current collector. The negative electrode mixture layer includes a first layer and a second layer. The first…",
  "path": "/patents/1437321",
  "publishedAt": "2024-04-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "PANASONIC CORP [JP]"
  ],
  "textContent": "A negative electrode for a nonaqueous electrolyte secondary battery includes a negative electrode current collector and a negative electrode mixture layer formed on the negative electrode current collector. The negative electrode mixture layer includes a first layer and a second layer. The first layer is formed on the negative electrode current collector and includes a negative electrode active material and a first binding agent. The negative electrode active material in the first layer includes a carbon material A and a Si-containing compound. The first binding agent includes polyacrylic acid or a salt thereof. The second layer is formed on the first layer and includes a negative electrode active material and a second binding agent. The negative electrode active material in the second layer includes a carbon material B. The carbon material B has a tap density higher than a tap density of the carbon material A. A mass of the first layer relative to a mass of the negative electrode mixture layer is 50 mass% or greater and less than 90 mass%. A mass of the second layer relative to the mass of the negative electrode mixture layer is greater than 10 mass% and 50 mass% or less. A packing density of the second layer is lower than a packing density of the first layer.",
  "title": "NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY"
}