실리콘 나노 입자 함유 수소 폴리실세스퀴옥산, 그 소성물, 및 이들의 제조 방법

• Main Authors: TAKAHASHI AKIRA, KONDO MASAKAZU, YAMADA HIROTSUNA, KIZAKI TETSURO, TAKANO YOSHIHITO
• Format: Patent
• Language: Korean
• Published: 12.03.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

본 발명에 포함되는 일반식 SiOH(0.3<x2<1.5, 0.01<y2<0.35)로 표시되고, 체적 기준 평균 입경(粒徑)이 10nm 초과, 500nm 미만인 실리콘 나노 입자를 5중량%∼65중량% 함유하고, 상기 실리콘 나노 입자 표면과 수소 폴리실세스퀴옥산 유래의 규소 산화물 구조의 사이에 화학적인 결합을 가지고, Si-H 결합을 가지는, 본질적으로 탄소를 포함하지 않는 실리콘 나노 입자 함유 수소 폴리실세스퀴옥산 소성물은, 우수한 방전 용량, 초기 충방전 효율 및 사이클 특성을 가지는 2차 전지용 음극 활물질에 응용 가능한 규소 산화물이다. A silicon nanoparticle-containing hydrogen polysilsesquioxane calcined product to be covered by the invention, represented by general formula SiOx2Hy2(0.3<x2<1.5, 0.01<y2<0.35), containing 5% by weight to 65% by weight of silicon nanoparticles having a volume-basis mean particle size of more than 10 nanometers and less than 500 nanometers, having a chemical bond between a surface of the silicon nanoparticles and a silicon oxide structure derived from hydrogen polysilsesquioxane, having a Si-H bond, and substantially containing no carbon is silicon oxide applicable to a negative electrode active material for a secondary battery having excellent discharging capacity, initial charging and discharging efficiency and cycle characteristics.