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1. WO2022094703 - IMPROVED SYNTHESIS OF OLIVINE LITHIUM METAL PHOSPHATE CATHODE MATERIALS

Publication Number WO/2022/094703
Publication Date 12.05.2022
International Application No. PCT/CA2021/051553
International Filing Date 02.11.2021
IPC
H01M 4/1397 2010.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
139Processes of manufacture
1397of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
C01B 25/45 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
25Phosphorus; Compounds thereof
16Oxyacids of phosphorus; Salts thereof
26Phosphates
45containing plural metal, or metal and ammonium
H01M 10/0525 2010.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
CPC
C01G 53/006
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
53Compounds of nickel
006Compounds containing, besides nickel, two or more other elements, with the exception of oxygen or hydrogen
C01P 2002/72
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
70defined by measured X-ray, neutron or electron diffraction data
72by d-values or two theta-values, e.g. as X-ray diagram
C01P 2004/03
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2004Particle morphology
01depicted by an image
03obtained by SEM
C01P 2006/40
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2006Physical properties of inorganic compounds
40Electric properties
H01M 2004/028
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
026characterised by the polarity
028Positive electrodes
H01M 4/0471
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
04Processes of manufacture in general
0471involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
Applicants
  • NANO ONE MATERIALS CORP. [CA]/[CA]
Inventors
  • HADIDI, Lida
Agents
  • MILNE, Peter
Priority Data
17/494,00005.10.2021US
63/108,91603.11.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVED SYNTHESIS OF OLIVINE LITHIUM METAL PHOSPHATE CATHODE MATERIALS
(FR) SYNTHÈSE AMÉLIORÉE DE MATÉRIAUX DE CATHODE DE LITHIUM MÉTAL PHOSPHATE OLIVINE
Abstract
(EN) An improved method for the formation of lithium metal phosphate cathode material is provided. The process comprises: forming a first aqueous suspension comprising a first molar concentration of Li+ and a second molar concentration of PO43-; forming a second aqueous suspension comprising a metal source wherein the metal source comprises at least one iron source selected from the group consisting of Fe2O3, FeOOH and Fe3O4 and an organic acid, organic alcohol or salt of an organic acid; wherein iron of the iron source is present in a third molar concentration; combining the first aqueous suspension and the second aqueous suspension and allowing a precipitate to form; drying the precipitate; and calcining the precipitate thereby forming the lithium iron phosphate cathode material having a formula represented by LiMPO4/C wherein the lithium iron phosphate cathode material comprises up to 3 wt% carbon.
(FR) La présente invention concerne un procédé amélioré de formation d'un matériau de cathode de lithium métal phosphate olivine. Le procédé consiste : à former une première suspension aqueuse comprenant une première concentration molaire de Li+ et une deuxième concentration molaire de PO43- ; à former une seconde suspension aqueuse comprenant une source de métal, la source de métal comprenant au moins une source de fer choisie dans le groupe constitué par le Fe2O3, le FeOOH et le Fe3O4 et un acide organique, un alcool organique ou un sel d'un acide organique ; le fer de la source de fer étant présent dans une troisième concentration molaire ; à combiner la première suspension aqueuse et la seconde suspension aqueuse et à permettre la formation d'un précipité ; à sécher le précipité ; et à calciner le précipité, formant ainsi le matériau de cathode de lithium fer phosphate ayant une formule représentée par LiMPO4/C, le matériau de cathode de lithium fer phosphate comprenant jusqu'à 3 % en poids de carbone.
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