이차 전지는: 캐소드; 활물질을 포함하는 애노드; 및 전해액을 포함하고, 활물질은 중심부, 및 중심부의 표면상에 제공된 피복부를 포함하고, 중심부는 구성 원소로서 실리콘(Si)을 포함하고, 피복부는 구성 원소로서 탄소(C) 및 수소(H)를 포함하고, 비행시간형 이차 이온 질량 분석법을 이용한 피복부의 양이온 분석에 의해, CH(x 및 y는 2≤x≤6 및 3≤y≤9를 만족함)로 나타내는 하나 이상의 양이온이 검출된다.

    The present invention relates to an active substance, an electrode, a secondary battery, a battery pack, and an electric vehicle. The secondary battery comprises a positive electrode; a negative electrode comprising the active substance; and electrolyte, wherein the active substance comprises a central portion, and a covering portion which is located on the surface of the central portion, the central portion comprises silicon (Si) as a component, the covering portion comprises carbon (C) and hydrogen (H) as components, and kation analysis is carried out using a time of flight second ion mass spectroscopy method to detect one or more kinds of kation represented by CxHy (wherein x and y satisfy 2<=x<=6, and 3<=y<=9).


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    Title :

    ACTIVE MATERIAL ELECTRODE SECONDARY BATTERY BATTERY PACK ELECTRIC VEHICLE ELECTRIC POWER STORAGE SYSTEM ELECTRIC POWER TOOL AND ELECTRONIC APPARATUS


    Additional title:

    활물질, 전극, 이차 전지, 전지팩, 전동 차량, 전력저장 시스템, 전동 공구 및 전자 기기


    Publication date :

    2020-07-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen