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1. (WO2018226063) COMPOSITE CONDUCTIVE MATERIAL HAVING EXCELLENT DISPERSIBILITY, SLURRY FOR FORMING LITHIUM SECONDARY BATTERY ELECTRODE USING SAME, AND LITHIUM SECONDARY BATTERY
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Pub. No.: WO/2018/226063 International Application No.: PCT/KR2018/006517
Publication Date: 13.12.2018 International Filing Date: 08.06.2018
IPC:
H01B 1/04 (2006.01) ,H01M 4/62 (2006.01) ,H01M 4/13 (2010.01) ,H01M 10/052 (2010.01) ,D01F 9/12 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
B
CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
1
Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
04
mainly consisting of carbon-silicon compounds, carbon, or silicon
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
62
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
13
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
05
Accumulators with non-aqueous electrolyte
052
Li-accumulators
D TEXTILES; PAPER
01
NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
F
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
9
Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
08
of inorganic material
12
Carbon filaments; Apparatus specially adapted for the manufacture thereof
Applicants:
주식회사 엘지화학 LG CHEM, LTD. [KR/KR]; 서울시 영등포구 여의대로 128 128, Yeoui-daero, Yeongdeungpo-gu, Seoul 07336, KR
Inventors:
김태곤 KIM, Tea Gon; KR
김제영 KIM, Je Young; KR
김학윤 KIM, Hak Yoon; KR
성기원 SUNG, Ki Won; KR
김예린 KIM, Ye Lin; KR
백주열 BAEK, Joo Yul; KR
유정근 YOO, Jung Keun; KR
임준묵 LIM, Jun Muk; KR
김슬기 KIM, Seul Ki; KR
Agent:
김홍균 KIM, Hong Gyun; KR
Priority Data:
10-2017-007150608.06.2017KR
Title (EN) COMPOSITE CONDUCTIVE MATERIAL HAVING EXCELLENT DISPERSIBILITY, SLURRY FOR FORMING LITHIUM SECONDARY BATTERY ELECTRODE USING SAME, AND LITHIUM SECONDARY BATTERY
(FR) MATÉRIAU CONDUCTEUR COMPOSITE AYANT UNE EXCELLENTE DISPERSIBILITÉ, BOUILLIE POUR FORMER UNE ÉLECTRODE DE BATTERIE SECONDAIRE AU LITHIUM L'UTILISANT, ET BATTERIE SECONDAIRE AU LITHIUM
(KO) 분산성이 우수한 복합 도전재, 이를 사용한 리튬 이차전지의 전극 형성용 슬러리 및 리튬 이차전지
Abstract:
(EN) The present invention provides: a composite conductive material having excellent dispersibility and comprising spherical carbon particles and carbon nanofibers that form by growing from contact points between the carbon particles and a catalyst that has permeated into the carbon particles; a slurry for forming an electrode which includes the conductive material; and an electrode for a secondary battery. In addition, the present invention provides a method for producing a composite conductive material, the method being characterized by including: a step (S1) of impregnating carbon particles with a catalyst; a step (S2) of permeating the catalyst into the carbon particles by heat treating the catalyst in a helium or hydrogen atmosphere; and a step (S3) of growing carbon nanofibers from contact points between the catalyst and carbon particles by supplying and heating a base material gas including carbon atoms. In a composite conductive material for a secondary battery according to the present invention, carbon nanofibers are integrated with spherical carbon particles having excellent dispersibility by directly synthesizing and growing the carbon nanofibers from the carbon particles, and thus there is an effect of compensating for the poor dispersibility of highly conductive carbon nanofibers.
(FR) La présente invention concerne : un matériau conducteur composite ayant une excellente dispersibilité et comprenant des particules de carbone sphériques et des nanofibres de carbone qui se forment par croissance à partir de points de contact entre les particules de carbone et un catalyseur qui a pénétré dans les particules de carbone; une bouillie pour former une électrode qui comprend le matériau conducteur; et une électrode pour une batterie secondaire. De plus, la présente invention concerne un procédé de production d'un matériau conducteur composite, le procédé étant caractérisé en ce qu'il comprend : une étape (S1) consistant à imprégner des particules de carbone avec un catalyseur; une étape (S2) de perméation du catalyseur dans les particules de carbone par traitement thermique du catalyseur dans une atmosphère d'hélium ou d'hydrogène; et une étape (S3) de croissance de nanofibres de carbone à partir de points de contact entre le catalyseur et les particules de carbone par apport et chauffage d'un gaz de matériau de base comprenant des atomes de carbone. Dans un matériau conducteur composite pour une batterie secondaire selon la présente invention, des nanofibres de carbone sont intégrées avec des particules de carbone sphériques ayant une excellente dispersibilité par synthèse directe et croissance des nanofibres de carbone à partir des particules de carbone, et donc il y a un effet de compensation de la mauvaise dispersibilité de nanofibres de carbone hautement conductrices.
(KO) 본 발명은 구형의 탄소 입자; 및 상기 탄소 입자의 내부로 침투된 촉매와 탄소 입자의 접점으로부터 성장되어 형성된 탄소 나노 섬유를 가지는 분산성이 우수한 복합 도전재, 상기 도전재를 포함하는 전극 형성용 슬러리, 이차전지용 전극이다. 또한 본 발명은 탄소 입자에 촉매를 담지시키는 단계(S1); 상기 촉매를 헬륨 또는 수소 분위기에서 열처리하여 탄소 입자의 내부로 침투시키는 단계(S2); 및 탄소원을 포함한 원료가스를 공급해 가열함으로써, 상기 촉매와 탄소 입자의 접점으로부터 탄소 나노 섬유를 성장시키는 단계(S3)를 포함하는 것을 특징으로 하는 복합 도전재의 제조방법을 제공한다. 본 발명에 따른 이차전지용 복합 도전재는 분산성이 우수한 구형의 탄소 입자로부터 직접 탄소 나노 섬유를 합성·성장시켜 일체화함으로써, 전도성이 높은 탄소 나노 섬유의 난분산성의 단점을 보완하는 효과가 있다.
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African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Korean (KO)
Filing Language: Korean (KO)