{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "A negative electrode plate includes: a current collector; and an active material layer, located on the current collector. The active material layer includes a silicon-based material, a carbon material, and a binder. Silicon mass fractions in two places of the active material layer are Xand X; the…",
  "path": "/patents/1353579",
  "publishedAt": "2023-10-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/386",
    "Ningde Amperex Technology Limited"
  ],
  "textContent": "A negative electrode plate includes: a current collector; and an active material layer, located on the current collector. The active material layer includes a silicon-based material, a carbon material, and a binder. Silicon mass fractions in two places of the active material layer are Xand X; the two places cover a same area but are located in different positions, X≥X, M=X/X, and M≥0.7. Lithium mass fractions in the two places are Yand Y, respectively; the two places cover the same area but are located in different positions, Y≥Y, N=Y/Y, and N≥0.5. Also, uniformity of deintercalation and intercalation of lithium is enhanced by improving the dispersion uniformity of silicon in the active material layer, thereby alleviating volume expansion of the silicon-based material during cycling, and enhancing cycle performance and safety performance of the electrochemical device",
  "title": "NEGATIVE ELECTRODE PLATE, ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE"
}