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1. WO2022005210 - POSITIVE ELECTRODE FOR LITHIUM-SULFUR BATTERY AND METHOD FOR MANUFACTURING SAME

Publication Number WO/2022/005210
Publication Date 06.01.2022
International Application No. PCT/KR2021/008294
International Filing Date 30.06.2021
IPC
H01M 4/13 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
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 4/38 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
38of elements or alloys
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 2004/021
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
021Physical characteristics, e.g. porosity, surface area
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 4/02
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
H01M 4/04
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 4/0435
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 엘지에너지솔루션 LG ENERGY SOLUTION, LTD. [KR]/[KR]
Inventors
  • 안지훈 AHN, Jihoon
  • 김택경 KIM, Taek Gyoung
Agents
  • 김성호 KIM, Sung Ho
Priority Data
10-2020-008075701.07.2020KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) POSITIVE ELECTRODE FOR LITHIUM-SULFUR BATTERY AND METHOD FOR MANUFACTURING SAME
(FR) ÉLECTRODE POSITIVE POUR PILE AU LITHIUM-SOUFRE ET SON PROCÉDÉ DE FABRICATION
(KO) 리튬-황 전지용 양극 및 이의 제조방법
Abstract
(EN) The present invention relates to: a positive electrode for a lithium-sulfur battery; and a method for manufacturing same, the positive electrode including a current collector and a positive electrode active material layer formed on at least one surface of the current collector, wherein the positive electrode active material layer includes a positive electrode active material and a binder and has surface characteristics defined by Sa (arithmetic mean surface roughness of the positive electrode) and Sz (maximum height roughness of the positive electrode) ((i) 1μm ≤ Sa ≤ 5μm, (ii) 10μm ≤ Sz ≤ 60μm (Sa is the average value of distances from the mean plane of the peak-and-valley structure of the positive electrode surface to the highest/lowest point of each peak/valley, and Sz represents the distance from the lowest point to the highest point of the positive electrode)).
(FR) La présente invention concerne : une électrode positive pour une batterie au lithium-soufre ; et un procédé de fabrication de celle-ci, l'électrode positive comprenant un collecteur de courant et une couche de matériau actif d'électrode positive formée sur au moins une surface du collecteur de courant, la couche de matériau actif d'électrode positive comprenant un matériau actif d'électrode positive et un liant et présentant des caractéristiques de surface définies par Sa (rugosité de surface moyenne arithmétique de l'électrode positive et Sz (rugosité de hauteur maximale de l'électrode positive) ((i) 1μm ≤ Sa ≤ 5μm, (ii) 10μm ≤ Sz ≤ 60μm (Sa est la valeur moyenne des distances depuis le plan moyen de la structure de pic-creux de la surface d'électrode positive jusqu'au point le plus haut/le plus bas de chaque pic/creux, et Sz représente la distance du point le plus bas au point le plus élevé de l'électrode positive)).
(KO) 본 발명은 집전체; 및 상기 집전체의 적어도 일면에 형성되는 양극 활물질층;을 포함하는 리튬-황 전지용 양극에 있어서, 상기 양극 활물질층은 양극 활물질 및 바인더를 포함하고, 상기 양극 활물질층은 Sa(양극의 산술평균 표면 거칠기), Sz(양극의 최대 높이 거칠기) ((i) 1μm ≤ Sa ≤ 5μm, (ii) 10μm ≤ Sz ≤ 60μm (상기 Sa는 양극 표면 요철구조의 중간면으로부터 각 요철부의 최고지점 및 최저지점까지 거리의 평균값이고, 상기 Sz는 양극의 최저지점으로부터 최고지점까지의 거리를 의미한다))에 의해 규정되는 표면특성을 가지는, 리튬-황 전지용 양극 및 이의 제조방법에 관한 것이다.
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