The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2025
Filed:
Dec. 03, 2018
Daejoo Electronic Materials Co., Ltd, Siheung-Si Gyeonggi-do, KR;
Seung Min Oh, Siheung-Si, KR;
DAEJOO ELECTRONIC MATERIALS CO., LTD., Siheung-si, KR;
Abstract
The present disclosure relates to a negative electrode active material for non-aqueous electrolyte secondary battery, and a negative electrode active material for non-aqueous electrolyte secondary battery according to an embodiment of the present disclosure comprises a silicon oxide composite comprising silicon, silicon oxide (SiO, 0<x≤2) and magnesium silicate, and including pores with a size of 50 to 300 nm therein. The negative electrode active material for non-aqueous electrolyte secondary battery comprising the silicon oxide composite according to the present disclosure solves a swelling problem by allowing the pores inside the silicon oxide composite to play a role of buffering expansion in the charging process, efficiently controls volume expansion by allowing stress caused by expansion and contraction generated during charging or discharging to be concentrated in the pores inside the silicon oxide composite, and can improve lifetime characteristics of the lithium secondary battery accordingly.