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1. WO2021121772 - LITHIUM ION BATTERY AND METHOD FOR PRODUCING A LITHIUM ION BATTERY

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Publication Number WO/2021/121772
Publication Date 24.06.2021
International Application No. PCT/EP2020/081470
International Filing Date 09.11.2020
IPC
H01M 4/04 2006.1
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
04Processes of manufacture in general
H01M 4/131 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
131Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/133 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
133Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 4/134 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
134Electrodes based on metals, Si or alloys
H01M 4/1391 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
1391of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/36 2006.1
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
36Selection of substances as active materials, active masses, active liquids
CPC
H01M 10/0525
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
H01M 2004/027
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
027Negative electrodes
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 4/0404
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
0402Methods of deposition of the material
0404by coating on electrode collectors
H01M 4/0459
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
0438by electrochemical processing
0459Electrochemical doping, intercalation, occlusion or alloying
H01M 4/131
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
131Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
Applicants
  • BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT [DE]/[DE]
Inventors
  • JUNG, Roland
  • WOEHRLE, Thomas
  • OGIHARA, Hideki
Priority Data
10 2019 135 048.419.12.2019DE
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) LITHIUMIONEN-BATTERIE UND VERFAHREN ZUR HERSTELLUNG EINER LITHIUMIONEN-BATTERIE
(EN) LITHIUM ION BATTERY AND METHOD FOR PRODUCING A LITHIUM ION BATTERY
(FR) BATTERIE AU LITHIUM-ION ET PROCÉDÉ DE PRODUCTION D'UNE BATTERIE AU LITHIUM-ION
Abstract
(DE) Eine Lithiumionen-Batterie hat eine Kathode, die ein Komposit- Kathodenaktivmaterial umfasst, und eine Anode, die ein Anodenaktivmaterial umfasst. Das Komposit-Kathodenaktivmaterial umfasst mindestens ein erstes und ein zweites Kathodenaktivmaterial, wobei das zweite Kathodenaktivmaterial eine Verbindung mit Olivinstruktur ist, und wobei zumindest ein Lithiierungsgrad des ersten Kathodenaktivmaterials von einem Lithiierungsgrad des zweiten Kathodenaktivmaterials verschieden ist. Der Lithiierungsgrad des ersten Kathodenaktivmaterials ist vor der Elektrolytbefüllung bzw. dem ersten Entlade- und/oder Ladevorgang der Lithiumionen-Batterie höher als der Lithiierungsgrad des zweiten Kathodenaktivmaterials. Das Anodenaktivmaterial ist vor der Elektrolytbefüllung bzw. dem ersten Entlade- und/oder Ladevorgang der Lithiumionen-Batterie vorlithiiert. Zudem wird ein Verfahren zur Herstellung einer solchen Lithiumionen-Batterie angegeben.
(EN) The invention relates to a lithium ion battery having a cathode, which comprises a composite cathode active material, and an anode, which comprises an anode active material. The composite cathode active material comprises at least a first and a second cathode active material, wherein the second cathode active material is a compound with an olivine structure, and wherein at least a lithiation degree of the first cathode active material differs from a lithiation degree of the second cathode active material. Prior to electrolyte filling or the first discharging and/or charging process of the lithium ion battery, the lithiation degree of the first cathode active material is higher than the lithiation degree of the second cathode active material. Prior to electrolyte filling or the first discharging and/or charging process of the lithium ion battery, the anode active material is pre-lithiated. The invention further relates to a method for producing a lithium ion battery of this kind.
(FR) L'invention concerne une batterie au lithium-ion ayant une cathode, qui comprend un matériau actif de cathode composite, et une anode, qui comprend un matériau actif d'anode. Le matériau actif de cathode composite comprend au moins un premier et un second matériau actif de cathode, le second matériau actif de cathode étant un composé ayant une structure d'olivine et au moins un degré de lithiation du premier matériau actif de cathode différant d'un degré de lithiation du second matériau actif de cathode. Avant le remplissage d'électrolyte ou le premier processus de décharge et/ou de charge de la batterie au lithium-ion, le degré de lithiation du premier matériau actif de cathode est supérieur au degré de lithiation du second matériau actif de cathode. Avant le remplissage d'électrolyte ou le premier processus de décharge et/ou de charge de la batterie au lithium-ion, le matériau actif d'anode est pré-lithié. L'invention concerne également un procédé de production d'une telle batterie au lithium-ion.
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