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1. WO2020231087 - METHOD FOR MANUFACTURING ANODE

Publication Number WO/2020/231087
Publication Date 19.11.2020
International Application No. PCT/KR2020/006048
International Filing Date 07.05.2020
IPC
H01M 4/139 2010.01
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
H01M 4/1393 2010.01
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
1393of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 4/1391 2010.01
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 4/1395 2010.01
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
1395of electrodes based on metals, Si or alloys
H01M 4/04 2006.01
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 10/052 2010.01
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
Applicants
  • 주식회사 엘지화학 LG CHEM, LTD. [KR]/[KR]
Inventors
  • 채오병 CHAE, Oh Byong
  • 김예리 KIM, Ye Ri
Agents
  • 특허법인 태평양 BAE, KIM & LEE IP
Priority Data
10-2019-005501110.05.2019KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) METHOD FOR MANUFACTURING ANODE
(FR) PROCÉDÉ DE FABRICATION D'ANODE
(KO) 음극의 제조방법
Abstract
(EN)
The present invention relates to a method for manufacturing an anode, the method comprising the steps of: providing an anode roll obtained by coiling an anode structure comprising an anode current collector and an anode active material layer formed on at least one surface of the anode current collector; providing a pre-lithiation reaction tank divided in sequence into an impregnation section, a pre-lithiation section, and an aging section, and containing a pre-lithiation solution; uncoiling the anode structure from the anode roll, and impregnating the anode structure with the pre-lithiation solution while moving the anode structure through the impregnation section; passing the anode structure through the impregnation section, and performing pre-lithiation of the anode structure while moving the anode structure through the pre-lithiation section; and passing the anode structure through the pre-lithiation section, and aging the anode structure while moving the anode structure through the aging section, wherein the pre-lithiation is performed by placing a lithium metal counter electrode, spaced apart from the anode structure and impregnated with the pre-lithiation solution, in the pre-lithiation section and electrochemically charging the anode structure.
(FR)
La présente invention concerne un procédé de fabrication d'une anode, le procédé comprenant les étapes consistant à : fournir un rouleau d'anode obtenu par enroulement d'une structure d'anode comprenant un collecteur de courant d'anode et une couche de matériau actif d'anode formée sur au moins une surface du collecteur de courant d'anode ; fournir un réservoir de réaction de pré-lithiation divisé en séquence en une section d'imprégnation, une section de pré-lithiation, et une section de vieillissement, et contenant une solution de pré-lithiation ; dérouler la structure d'anode à partir du rouleau d'anode, et imprégner la structure d'anode avec la solution de pré-lithiation tout en déplaçant la structure d'anode à travers la section d'imprégnation ; faire passer la structure d'anode à travers la section d'imprégnation, et effectuer une pré-lithiation de la structure d'anode tout en déplaçant la structure d'anode à travers la section de pré-lithiation ; et faire passer la structure d'anode à travers la section de pré-lithiation, et faire vieillir la structure d'anode tout en déplaçant la structure d'anode à travers la section de vieillissement, la pré-lithiation étant réalisée en plaçant une contre-électrode métallique de lithium, espacée de la structure d'anode et imprégnée de la solution de pré-lithiation, dans la section de pré-lithiation et en chargeant électrochimiquement la structure d'anode.
(KO)
본 발명은 음극 집전체 및 상기 음극 집전체의 적어도 일면에 형성되는 음극 활물질층을 포함하는 음극 구조체가 권취된 음극 롤을 준비하는 단계; 함침 구간, 전리튬화 구간 및 에이징 구간이 순차적으로 구획되고, 전리튬화 용액을 포함하는 전리튬화 반응조를 준비하는 단계; 상기 음극 롤로부터 상기 음극 구조체를 권출하고, 상기 음극 구조체를 상기 함침 구간에 주행시키면서 상기 전리튬화 용액에 함침시키는 단계; 상기 함침 구간으로부터 상기 음극 구조체를 통과시키고, 상기 음극 구조체를 상기 전리튬화 구간에 주행시키면서 전리튬화시키는 단계; 및 상기 전리튬화 구간으로부터 상기 음극 구조체를 통과시키고, 상기 음극 구조체를 상기 에이징 구간에 주행시키면서 에이징시키는 단계;를 포함하고, 상기 전리튬화는 상기 음극 구조체와 이격되고 상기 전리튬화 용액에 함침되는 리튬 금속 대극을 상기 전리튬화 구간에 배치하고, 상기 음극 구조체를 전기화학적 충전하여 수행되는 음극의 제조방법에 관한 것이다.
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