{
  "$type": "site.standard.document",
  "description": "The present application provides a positive electrode material precursor, a preparation method therefor, a positive electrode material, and a lithium ion battery, and relates to the technical field of new energy. The positive electrode material precursor includes secondary particles each composed…",
  "path": "/patents/1387371",
  "publishedAt": "2026-02-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/00",
    "CNGR ADVANCED MAT CO LTD [CN]"
  ],
  "textContent": "The present application provides a positive electrode material precursor, a preparation method therefor, a positive electrode material, and a lithium ion battery, and relates to the technical field of new energy. The positive electrode material precursor includes secondary particles each composed of primary particles and is a composite structure comprising an inner layer arranged in a radial shape along the center of the positive electrode material precursor and an outer layer wrapped around the inner layer and formed by laying in layer and stacking lamellar primary particles and arranged in a lamellar shape, wherein the lamellae of the outer layer are perpendicular to the direction of pressure in the compaction process, so that the mechanical strength of the secondary particles of the present application is higher than that of secondary particles in a common radial structure or block structure. After inheriting this structure, the positive electrode material can obtain a higher compaction density than that of a common secondary particle product, and the energy density of the material is significantly improved. In the present application, the inner layer and the outer layer of the secondary particles have different lamellar orientations, and a sintered positive electrode material inherits this characteristic structure. In the charging/discharging cycle, the expansion and contraction directions of the material are different, preventing or reducing the occurrence of cracks causing collapse of the particle structure, and thereby improving the cycle performance.",
  "title": "POSITIVE ELECTRODE MATERIAL PRECURSOR, PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE MATERIAL, AND LITHIUM ION BATTERY"
}