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1. WO2021066580 - ANODE ACTIVE MATERIAL, METHOD FOR PREPARING ANODE ACTIVE MATERIAL, ANODE COMPRISING SAME, AND LITHIUM SECONDARY BATTERY

Publication Number WO/2021/066580
Publication Date 08.04.2021
International Application No. PCT/KR2020/013427
International Filing Date 29.09.2020
IPC
H01M 4/36 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
36Selection of substances as active materials, active masses, active liquids
H01M 4/587 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
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 2006.01
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
62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 10/0525 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
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
C01B 32/21 2017.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
32Carbon; Compounds thereof
20Graphite
21After-treatment
C01B 32/05 2017.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
32Carbon; Compounds thereof
05Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30178
Applicants
  • 주식회사 엘지화학 LG CHEM, LTD. [KR]/[KR]
Inventors
  • 정동섭 JUNG, Dong-Sub
  • 김현철 KIM, Hyun-Chul
  • 이창주 LEE, Chang-Ju
  • 우상욱 WOO, Sang-Wook
Agents
  • 특허법인 필앤온지 PHIL & ONZI INT'L PATENT & LAW FIRM
Priority Data
10-2019-012107130.09.2019KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) ANODE ACTIVE MATERIAL, METHOD FOR PREPARING ANODE ACTIVE MATERIAL, ANODE COMPRISING SAME, AND LITHIUM SECONDARY BATTERY
(FR) MATÉRIAU ACTIF D'ANODE, PROCÉDÉ DE PRÉPARATION DE MATÉRIAU ACTIF D'ANODE, ANODE LE COMPRENANT ET PILE SECONDAIRE AU LITHIUM
(KO) 음극활물질, 음극활물질의 제조방법, 이를 포함하는 음극 및 리튬 이차전지
Abstract
(EN)
Disclosed are an anode active material, an anode comprising same, and a lithium secondary battery, the anode active material comprising: a graphite core; a first carbon coating layer encompassing the outside of the graphite core; and a second carbon coating layer encompassing the outside of the first carbon coating layer, wherein the second carbon coating layer has a crystallinity smaller than that of the first carbon coating layer, or the second carbon coating layer comprises hard carbon and the first carbon coating layer comprises soft carbon.
(FR)
L'invention concerne un matériau actif d'anode, une anode le comprenant et une pile secondaire au lithium, le matériau actif d'anode comprenant : un noyau de graphite ; une première couche de revêtement de carbone entourant l'extérieur du noyau de graphite ; et une seconde couche de revêtement de carbone entourant l'extérieur de la première couche de revêtement de carbone, la seconde couche de revêtement de carbone ayant une cristallinité inférieure à celle de la première couche de revêtement de carbone, ou la seconde couche de revêtement de carbone comprenant du carbone dur et la première couche de revêtement de carbone comprenant du carbone mou.
(KO)
흑연 코어; 상기 흑연 코어의 외측을 둘러싸고 있는 제1 탄소 코팅층; 및 상기 제1 탄소 코팅층의 외측을 둘러싸고 있는 제2 탄소 코팅층;을 포함하고, 상기 제2 탄소 코팅층이 상기 제1 탄소 코팅층 보다 결정화도가 작거나, 또는 상기 제2 탄소 코팅층이 하드 카본을 포함하고, 상기 제1 탄소 코팅층이 소프트 카본을 포함하는 음극활물질, 이를 포함하는 음극, 및 리튬 이차전지가 제시된다.
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