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1. WO2022005064 - INTERMEDIATE FOR PREPARATION OF POROUS SILICON OXYCARBIDE, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING POROUS SILICON OXYCARBIDE PREPARED THEREFROM AS ANODE ACTIVE MATERIAL

Publication Number WO/2022/005064
Publication Date 06.01.2022
International Application No. PCT/KR2021/007645
International Filing Date 18.06.2021
IPC
C08G 77/04 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
04Polysiloxanes
C08G 77/20 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
04Polysiloxanes
20containing silicon bound to unsaturated aliphatic groups
C08G 77/50 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
48in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
50by carbon linkages
C08G 77/12 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
04Polysiloxanes
12containing silicon bound to hydrogen
C08G 77/18 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
04Polysiloxanes
14containing silicon bound to oxygen-containing groups
18to alkoxy or aryloxy groups
C01B 32/977 2017.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
32Carbon; Compounds thereof
90Carbides
914Carbides of single elements
956Silicon carbide
963Preparation from compounds containing silicon
977Preparation from organic compounds containing silicon
Applicants
  • 한양대학교 산학협력단 IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY) [KR]/[KR]
Inventors
  • 안희준 AHN, Hee Joon
  • 이세훈 LEE, Se Hun
  • 박창용 PARK, Chang Young
  • 도광현 DO, Kwang Hyun
Agents
  • 특허법인 이상 E-SANG PATENT & TRADEMARK LAW FIRM
Priority Data
10-2020-007898529.06.2020KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) INTERMEDIATE FOR PREPARATION OF POROUS SILICON OXYCARBIDE, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING POROUS SILICON OXYCARBIDE PREPARED THEREFROM AS ANODE ACTIVE MATERIAL
(FR) INTERMÉDIAIRE POUR LA PRÉPARATION D'OXYCARBURE DE SILICIUM POREUX, SON PROCÉDÉ DE PRÉPARATION ET BATTERIE RECHARGEABLE AU LITHIUM COMPRENANT DE L'OXYCARBURE DE SILICIUM POREUX PRÉPARÉ À PARTIR DE CELUI-CI EN TANT QUE MATÉRIAU ACTIF D'ANODE
(KO) 다공성 실리콘옥시카바이드 제조용 중간체, 이의 제조방법, 이로부터 제조된 다공성 실리콘옥시카바이드를 음극활물질로 포함하는 리튬 이차전지
Abstract
(EN) The present invention relates to an intermediate for preparation of porous silicon oxycarbide, a preparation method therefor, and a lithium secondary battery comprising porous silicon oxycarbide prepared therefrom as an anode active material. According to the present invention, an intermediate prepared by addition of POSS to a reaction mixture for silicon oxycarbide preparation, which is composed of a polysiloxane polymer and an aromatic compound, is pyrolyzed to produce porous silicon oxycarbide (SiOC), so that even though the porous silicon oxycarbide has a small content of free carbon regions compared with conventional silicon oxycarbide, a cage-shaped structure of the POSS is maintained at a pyrolysis stage to form many pores uniformly distributed in the SiOC matrix, thereby enabling the quick diffusion of electrolyte ions, and the contents of SiO3C and SiO2C2 are increased in the SiOC matrix to improve reversible capacity in the Si-O-C phase.
(FR) La présente invention concerne un intermédiaire pour la préparation d'oxycarbure de silicium poreux, son procédé de préparation et une batterie rechargeable au lithium comprenant de l'oxycarbure de silicium poreux préparé à partir de celui-ci en tant que matériau actif d'anode. Selon la présente invention, un intermédiaire préparé par addition de POSS à un mélange réactionnel pour la préparation d'oxycarbure de silicium, qui est composé d'un polymère de polysiloxane et d'un composé aromatique, est pyrolysé pour produire de l'oxycarbure de silicium poreux (SiOC), de sorte que même si l'oxycarbure de silicium poreux présente une faible teneur en zones formées de carbone libre par comparaison avec l'oxycarbure de silicium classique, une structure en forme de cage à base de POSS est préservée lors d'une étape de pyrolyse pour former de nombreux pores répartis uniformément dans la matrice de SiOC, ce qui permet la diffusion rapide d'ions électrolytiques, et les teneurs en SiO3C et en SiO2C2 sont accrues dans la matrice de SiOC pour améliorer la capacité réversible dans la phase de Si-O-C.
(KO) 본 발명은 다공성 실리콘옥시카바이드 제조용 중간체, 이의 제조방법, 이로부터 제조된 다공성 실리콘옥시카바이드를 음극활물질로 포함하는 리튬 이차전지에 관한 것으로, 본 발명에 따르면, 폴리실록산 고분자 및 방향족 화합물로 이루어진 실리콘옥시카바이드 제조용 반응 혼합물에 POSS를 첨가하여 제조된 중간체를 열분해하여 다공성 실리콘옥시카바이드(SiOC)를 제조함으로써, 종래의 실리콘옥시카바이드보다 자유 탄소 영역의 함량이 적음에도 불구하고, 열분해 단계에서 상기 POSS의 케이지형 구조가 유지되어 SiOC 매트릭스 내에 균일하게 분포된 많은 공극을 형성하여 빠른 전해질 이온의 확산이 가능하고, SiOC 매트릭스 내에 SiO3C 및 SiO2C2의 함량이 증가되어, Si-O-C 상 내의 가역적 용량이 향상되는 효과가 있다.
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