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1. WO2022010223 - ANODE AND SECONDARY BATTERY COMPRISING ANODE

Publication Number WO/2022/010223
Publication Date 13.01.2022
International Application No. PCT/KR2021/008561
International Filing Date 06.07.2021
IPC
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 4/587 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
36Selection of substances as active materials, active masses, active liquids
58of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
587for inserting or intercalating light metals
H01M 4/62 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
62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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
H01M 4/02 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
Applicants
  • 주식회사 엘지에너지솔루션 LG ENERGY SOLUTION, LTD. [KR]/[KR]
Inventors
  • 최희원 CHOI, Hee Won
  • 이용주 LEE, Yong Ju
  • 우상욱 WOO, Sang Wook
Agents
  • 특허법인 태평양 BAE, KIM & LEE IP
Priority Data
10-2020-008350607.07.2020KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) ANODE AND SECONDARY BATTERY COMPRISING ANODE
(FR) ANODE, ET BATTERIE SECONDAIRE COMPRENANT L'ANODE
(KO) 음극 및 상기 음극을 포함하는 이차 전지
Abstract
(EN) The present invention relates to an anode having excellent fast-charging performance and lifespan characteristics, and a secondary battery comprising the anode, and to an anode comprising a current collector and an anode active material layer formed on the current collector, wherein the anode active material layer comprises an anode active material, the anode active material comprises uncoated artificial graphite particles composed of secondary particles formed by the aggregation of a plurality of primary particles, the primary particles have an average diameter (D50) of 7-10 μm, the secondary particles have an average diameter (D50) of 15-20 μm, and the uncoated artificial graphite particles have a crystal size La(100) in the a-axis direction of 200-300 nm and a crystal size Lc(002) in the c-axis direction of 50-100 nm during XRD analysis.
(FR) La présente invention se rapporte à une anode présentant d'excellentes performances de charge rapide et d’excellentes caractéristiques de durée de vie, ainsi qu'à une batterie secondaire comprenant l'anode, et à une anode comprenant un collecteur de courant et une couche de matériau actif d'anode formée sur le collecteur de courant, la couche de matériau actif d'anode comprenant un matériau actif d'anode, le matériau actif d'anode comprenant des particules de graphite artificiel non enrobées composées de particules secondaires formées par l'agrégation d'une pluralité de particules primaires, les particules primaires présentant un diamètre moyen (D50) de 7 à 10 µm, les particules secondaires présentant un diamètre moyen (D50) de 15 à 20 µm, et les particules de graphite artificiel non enrobées présentant une taille de cristal La(100) dans la direction de l'axe a de 200 à 300 nm et une taille de cristal Lc(002) dans la direction de l'axe c de 50 à 100 nm pendant une analyse XRD.
(KO) 본 발명은 급속 충전 성능 및 수명 특성이 우수한 음극 및 상기 음극을 포함하는 이차 전지에 관한 발명으로, 집전체 및 상기 집전체 상에 형성된 음극 활물질층을 포함하고, 상기 음극 활물질층은 음극 활물질을 포함하며, 상기 음극 활물질은 복수의 1차 입자가 응집된 2차 입자로 이루어진 미피복 인조흑연 입자를 포함하고, 상기 1차 입자는 평균 입경(D50)이 7㎛ 내지 10㎛이고, 상기 2차 입자는 평균 입경(D50)이 15㎛ 내지 20㎛이고, 상기 미피복 인조흑연 입자의 XRD 분석 시 a축 방향의 결정 크기 La(100)는 200nm 내지 300nm이고, c축 방향의 결정 크기 Lc(002)는 50nm 내지 100nm인 음극에 관한 것이다.
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