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1. WO2020159236 - METHOD FOR PRE-LITHIATION OF NEGATIVE ELECTRODE FOR SECONDARY BATTERY

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Publication Number WO/2020/159236
Publication Date 06.08.2020
International Application No. PCT/KR2020/001383
International Filing Date 30.01.2020
IPC
H01M 4/139 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
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 10/052 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
CPC
H01M 10/052
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
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 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 4/0416
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
0416involving impregnation with a solution, dispersion, paste or dry powder
H01M 4/0435
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
043involving compressing or compaction
0435Rolling or calendering
Applicants
  • 주식회사 엘지화학 LG CHEM, LTD. [KR]/[KR]
Inventors
  • 김예리 KIM, Ye Ri
  • 우상욱 WOO, Sang Wook
  • 채오병 CHAE, Oh Byong
Agents
  • 김홍균 KIM, Hong Gyun
Priority Data
10-2019-001262631.01.2019KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) METHOD FOR PRE-LITHIATION OF NEGATIVE ELECTRODE FOR SECONDARY BATTERY
(FR) PROCÉDÉ DE PRÉ-LITHIATION D'ÉLECTRODE NÉGATIVE POUR BATTERIE SECONDAIRE
(KO) 이차전지용 음극의 전리튬화 방법
front page image
Abstract
(EN) The present invention relates to a method for pre-lithiation of a negative electrode for a secondary battery, for reducing the time required for pre-lithiation and reducing changes in volume of the electrode. The present invention comprises an electrolyte wetting step of immersing a negative electrode for a secondary battery in the electrolyte, and a pre-lithiation step of pre-lithiating the negative electrode, wherein the electrolyte wetting step includes a step of introducing the prepared negative electrode into an electrolyte bath containing the electrolyte, and a vacuum application step of removing bubbles and moisture in the negative electrode by applying a vacuum to the electrolyte bath in which the negative electrode is immersed.
(FR) La présente invention concerne un procédé de pré-lithiation d'une électrode négative pour une batterie secondaire, permettant de réduire le temps nécessaire à la pré-lithiation et de réduire les changements de volume de l'électrode. La présente invention comprend une étape d'imprégnation par l'électrolyte consistant à immerger une électrode négative pour une batterie secondaire dans l'électrolyte, et une étape de pré-lithiation consistant à pré-lithier l'électrode négative, l'étape d'imprégnation par l'électrolyte comprenant une étape d'introduction de l'électrode négative préparée dans un bain électrolytique contenant l'électrolyte, et une étape d'application de vide consistant à éliminer les bulles et l'humidité de l'électrode négative par application d'un vide au bain électrolytique dans lequel l'électrode négative est immergée.
(KO) 본 발명은 전리튬화에 소요되는 시간을 줄이고, 전극의 부피 변화를 감소시키기 위한 이차전지용 음극의 전리튬화 방법에 관한 것으로서, 이차전지용 음극을 전해액에 침지시키는 전해액 함침 단계; 및 상기 음극을 전리튬화시키는 전리튬화 단계를 포함하고, 상기 전해액 함침 단계는 상기 제조된 음극을 전해액이 담긴 전해액조에 투입하는 단계; 및 상기 음극이 침지된 상기 전해액조에 진공을 인가하여 음극 내 기포 및 수분을 제거하는 진공 인가 단계를 포함한다.
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