CORE-SHELL TYPE ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, METHOD FOR PREPARING THE SAME AND LITHIUM SECONDARY BATTERIES CONTAINING THE SAME

• Main Authors: COJOCARU PAULA, APOSTOLO MARCO, FOUDA ONANA FREDERIC
• Format: Patent
• Language: English; Korean
• Published: 15.02.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRICITY; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

본 발명은 리튬 이차 배터리용 코어-셸 유형의 애노드 활성 물질에 관한 것으로서, 규소-함유 전기활성 물질로 만들어진 코어; 및 상기 코어 외부에 형성된 금속성 셸을 포함하며, 여기서 상기 금속성 셸은 적어도 하나의 금속을 포함하는 적어도 하나의 금속성 화합물[화합물(M)]로 구성된다. 본 발명은 상기 코어-셸 유형의 애노드 활성 물질을 제조하는 방법을 추가로 개시하며, 상기 방법은 무전해 도금을 사용한다. 추가적으로, 본 발명은 또한 코어-셸 유형의 애노드 활성 물질을 사용하여 애노드 구조를 제조하는 방법, 및 상기 애노드 구조를 포함하는 전기화학적 장치에 관한 것이다. The invention pertains to a core-shell type anode active material for lithium secondary batteries, comprising: a core made of a silicon-containing electroactive material; and a metallic shell formed outside the core, wherein the metallic shell is composed of at least one metallic compound comprising at least one metal [compound (M)]. The invention further discloses a method for manufacturing said core-shell type anode active material, which uses electroless plating. Additionally, the invention also relates to a process for manufacturing an anode structure using the core-shell type anode active material, and to an electrochemical device comprising said anode structure.