{
  "$type": "site.standard.document",
  "description": "The invention concerns the manufacture and use of phosphates of transition metals as positive electrodes for secondary lithium batteries and discloses a process for the production of LiMPO4 with controlled size and morphology, M being FexCoyNizMnw, with 0≤x≤1, 0≤y≤1, 0≤z≤1, 0≤w≤1 and x+y+z+w=1. A…",
  "path": "/patents/1100106",
  "publishedAt": "2002-11-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01B25/375",
    "UMICORE S A NV [BE]"
  ],
  "textContent": "The invention concerns the manufacture and use of phosphates of transition metals as positive electrodes for secondary lithium batteries and discloses a process for the production of LiMPO4 with controlled size and morphology, M being FexCoyNizMnw, with 0≤x≤1, 0≤y≤1, 0≤z≤1, 0≤w≤1 and x+y+z+w=1. A process is disclosed for the manufacture of LiFePO4, comprising the steps of providing an equimolar aqueous solution of Li, Fe and PO4, evaporating the water from the solution, thereby producing a solid mixture, decomposing the solid mixture at a temperature below 500 DEG C to form a pure homogeneous Li and Fe phosphate precursor, and annealing the precursor at a temperature of less than 800 DEG C in a reducing atmosphere, thereby forming a LiFePO4 powder. The obtained powders have a particle size of less than 1 mu m, and provide superior electrochemical performances once mixed for an appropriate time with electrical conductive powder.",
  "title": "Lithium transition-metal phosphate powder for rechargeable batteries"
}