US 12,341,167 B2
Method for recycling electrode scraps, and method for manufacturing electrode by using same
Jun-Muk Lim, Daejeon (KR); Joo-Yul Baek, Daejeon (KR); Hee-Seok Song, Daejeon (KR); Seong-Keun Jang, Daejeon (KR); Woo-Ha Kim, Daejeon (KR); and Sang-Hoon Choy, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/603,152
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jul. 14, 2020, PCT No. PCT/KR2020/009260
§ 371(c)(1), (2) Date Oct. 12, 2021,
PCT Pub. No. WO2021/029545, PCT Pub. Date Feb. 18, 2021.
Claims priority of application No. 10-2019-0098995 (KR), filed on Aug. 13, 2019.
Prior Publication US 2022/0200075 A1, Jun. 23, 2022
Int. Cl. H01M 10/54 (2006.01); H01M 4/02 (2006.01); H01M 4/62 (2006.01)
CPC H01M 10/54 (2013.01) [H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 2004/028 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of reusing an electrode scrap, comprising:
dry milling an electrode scrap remaining after punching an electrode sheet including an active material layer on a current collector to obtain milled products;
screening active material layer flakes from current collector fragments in the milled products by sieving the milled products to produce screened active material layer flakes; and
collecting the screened active material layer flakes to obtain reusable particles,
wherein
the screening comprises separating the active material layer flakes from the current collector fragments in the milled products stepwise according to size by sieving the milled products in a sequential order using a plurality of sieves having different mesh sizes; and
the collecting comprises collecting smallest sized active material layer flakes and active material layer flakes that are at least one size bigger than the smallest sized active material layer flakes to obtain reusable particles.