US 12,148,930 B2
Negative electrode and secondary battery including the same
Young Jae Kim, Daejeon (KR); and Jung Woo Yoo, Daejeon (KR)
Assigned to LG ENERGY SOLUTION LTD., Seoul (KR)
Appl. No. 17/269,221
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Sep. 5, 2019, PCT No. PCT/KR2019/011507
§ 371(c)(1), (2) Date Feb. 17, 2021,
PCT Pub. No. WO2020/050661, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 10-2018-0106029 (KR), filed on Sep. 5, 2018.
Prior Publication US 2021/0328225 A1, Oct. 21, 2021
Int. Cl. H01M 4/62 (2006.01); H01M 4/38 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/622 (2013.01) [H01M 4/386 (2013.01); H01M 4/625 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A negative electrode comprising a current collector and a negative electrode active material layer disposed on the current collector,
wherein the negative electrode active material layer comprises a negative electrode active material; a conductive agent; and a binder,
wherein the negative electrode active material comprises silicon particles having an average particle diameter (D50) of 4 μm to 10 μm,
the conductive agent comprises carbon nanotubes and a graphite-type conductive agent, and
the binder comprises a copolymer containing a polyvinyl alcohol-derived unit and an ionized substituted acrylate-derived unit.