US 11,984,587 B2
Negative electrode active material, negative electrode including the negative electrode active material, and secondary battery including the negative electrode
Il Geun Oh, Daejeon (KR); Sun Young Shin, Daejeon (KR); Se Hui Sohn, Daejeon (KR); Yong Ju Lee, Daejeon (KR); and Se Mi Park, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/910,601
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Sep. 10, 2021, PCT No. PCT/KR2021/012369
§ 371(c)(1), (2) Date Sep. 9, 2022,
PCT Pub. No. WO2022/055309, PCT Pub. Date Mar. 17, 2022.
Claims priority of application No. 10-2020-0117153 (KR), filed on Sep. 11, 2020.
Prior Publication US 2023/0155118 A1, May 18, 2023
Int. Cl. H01M 4/38 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/386 (2013.01) [H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A negative electrode active material comprising silicon-based composite particles containing SiOx (0<x<2) and a MgSiO3 phase, wherein the MgSiO3 phase comprises a first MgSiO3 phase having an enstatite structure and a second MgSiO3 phase having a clinoenstatite structure at a weight ratio of 1:1 to 1:5.