US 12,278,377 B2
Lithium free battery and method for preparing the same
Hyunwoong Yun, Daejeon (KR); Jung Pil Lee, Daejeon (KR); and Hoejin Hah, Daejeon (KR)
Assigned to LG ENERGY SOLUTION LTD., Seoul (KR)
Appl. No. 17/768,436
Filed by LG Energy Solution, LTD., Seoul (KR)
PCT Filed May 7, 2021, PCT No. PCT/KR2021/005753
§ 371(c)(1), (2) Date Apr. 12, 2022,
PCT Pub. No. WO2021/225415, PCT Pub. Date Nov. 11, 2021.
Claims priority of application No. 10-2020-0055157 (KR), filed on May 8, 2020; and application No. 10-2021-0008511 (KR), filed on Jan. 21, 2021.
Prior Publication US 2024/0120495 A1, Apr. 11, 2024
Int. Cl. H01M 4/66 (2006.01); H01M 4/13 (2010.01); H01M 4/139 (2010.01); H01M 10/058 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/66 (2013.01) [H01M 4/13 (2013.01); H01M 4/139 (2013.01); H01M 10/058 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 8 Claims
 
1. A lithium free battery comprising a positive electrode, a negative electrode, a separator, and a non-aqueous lithium electrolyte,
wherein the negative electrode comprises:
a metal substrate including at least one metal selected from the group consisting of Mg, Ca, Al, Si, Ge, Sn, Pb, As, Sb, Bi, Ag, Zn, Cd, P and Hg;
a lithium-metal alloy layer formed on the metal substrate; and
a lithium plating layer formed on the lithium-metal alloy layer,
wherein the metal contained in the lithium-metal alloy layer is a metal contained in the metal substrate, and
wherein the metal substrate has a thickness of 3 μm to 100 μm.