Method for producing lithium metal phosphate
AssigneeBK Giulini GmbH
InventorsThomas Staffel, Siegbert Weber, Marina Fleischhauer, Sebastian Metzger
Life of this patent
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Abstract
Method for the production of lithium metal phosphate, wherein a dry mixture containing a lithium compound, a metal compound, wherein the metal is selected from Fe, Mn and mixtures thereof, and a phosphate is provided, the dry mixture is converted to LiMPO4 and the LiMPO4 is wet ground by adding water and lithium polyacrylate and dried.
Claims30
A method for the production of lithium metal phosphate material for use in subsequent electrode formation, the method comprising:
- providing a dry mixture containing a lithium compound, a metal compound, wherein the metal is selected from Fe, Mn and mixtures thereof, and a phosphate,
- converting the dry mixture to LiMPO4,
- wet grinding the LiMPO4 by adding water and a grinding aid lithium polyacrylate to obtain particle size ranging from 0.1 to 15 μm, wherein the grinding aid is lithium polyacrylate, and
- drying to form a raw material for use in subsequent electrode formation,
- wherein the amount of lithium polyacrylate ranges from 0.005 to 2.0% by weight relative to the total amount of the lithium metal phosphate.
A method for the production of lithium metal phosphate material for use in subsequent electrode formation, the method comprising:
- providing a dry mixture containing a lithium compound, a metal compound, wherein the metal is selected from Fe, Mn and mixtures thereof, and a phosphate,
- converting the dry mixture to LiMPO4,
- wet grinding the LiMPO4 by adding water and lithium polyacrylate, and
- drying, wherein the drying is carried out as spray drying,
- wherein the amount of lithium polyacrylate ranges from 0.005 to 2.0% by weight relative to the total amount of the lithium metal phosphate.
A method for the production of lithium metal phosphate material for use in subsequent electrode formation, the method comprising:
- providing a dry mixture containing a lithium compound, a metal compound, wherein the metal is selected from Fe, Mn and mixtures thereof, and a phosphate,
- converting the dry mixture to LiMPO4,
- wet grinding the LiMPO4 by adding water and lithium polyacrylate,
- drying to obtain a powder,
- wherein the amount of lithium polyacrylate ranges from 0.005 to 2.0% by weight relative to the total amount of the lithium metal phosphate.
Dependencies are inferred from the claim text.