Process for producing electrode materials
AssigneeBASF SE
InventorsBastian Ewald, Ivana Krkljus, Jordan Keith Lampert
Life of this patent
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Abstract
The present invention relates to a process for producing electrode materials, which comprises the following steps: (a) mixing the following with one another: (A) at least one phosphorus compound, (B) at least one lithium compound, (C) at least one carbon source, (D1) at least one water-soluble iron compound in which Fe is present in the +2 or +3 oxidation state, (D2) at least one iron source which is different than (D1) and is water-insoluble and in which Fe is present in the zero, +2 or +3 oxidation state, (b) thermally treating the mixture obtained.
Claims18
An electrode material in particulate form, comprising
- agglomerates of primary particles (i) of lithiated iron phosphate with olivine structure and primary particles (ii) of lithiated iron phosphate with olivine structure, and
- optionally carbon (iii) in an electrically conductive polymorph,
- wherein
- the primary particles (i) have a D50 in a range of from 20 to 250 nm,
- the primary particles (ii) have D50 in a range of from 300 to 1000 nm, and
- a volume ratio of the primary particles (i) to the primary particles (ii) ranges from 1:9 to 1:1.
Dependencies are inferred from the claim text.