ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

According to embodiments of the present invention, provided is a negative electrode active material for a lithium secondary battery including a silicon-based oxide having a carbon coating layer on the surface and doped with magnesium, wherein a peak area ratio of 1303 eV to the sum of the 1304.5 eV...

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Bibliographic Details
Main Authors PARK EUN JUN, KIM JOON SUP, CHUNG JU HO, PARK GWI OK, JANG DONG IL
Format Patent
LanguageEnglish
Korean
Published 28.03.2023
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:According to embodiments of the present invention, provided is a negative electrode active material for a lithium secondary battery including a silicon-based oxide having a carbon coating layer on the surface and doped with magnesium, wherein a peak area ratio of 1303 eV to the sum of the 1304.5 eV peak area and 1303 eV peak area appearing in the Mg1s spectrum is 60% or less when measured by X-Ray Photoelectron Spectroscopy (XPS). 본 발명의 실시예들에 따르면 표면에 탄소 코팅층을 포함하고 마그네슘이 도핑된 실리콘계 산화물을 포함하며, X선 광전자 분광법(X-Ray Photoelectron Spectroscopy, XPS) 측정 시 Mg1s 스펙트럼에서 나타나는 1304.5eV의 피크(peak) 면적 및 1303eV의 피크 면적의 총합에 대하여 1303eV의 피크 면적비가 60% 이하인, 리튬 이차 전지용 음극 활물질이 제공된다.
Bibliography:Application Number: KR20230033725