US 12,119,473 B2
Folding type lithium air battery and method for manufacturing same
Jae Seung Lee, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed on Nov. 30, 2020, as Appl. No. 17/106,727.
Claims priority of application No. 10-2019-0161212 (KR), filed on Dec. 6, 2019.
Prior Publication US 2021/0175565 A1, Jun. 10, 2021
Int. Cl. H01M 12/06 (2006.01); H01M 4/36 (2006.01); H01M 10/0565 (2010.01); H01M 10/0567 (2010.01); H01M 10/0569 (2010.01); H01M 10/0583 (2010.01); H01M 50/46 (2021.01)
CPC H01M 12/06 (2013.01) [H01M 4/366 (2013.01); H01M 10/0565 (2013.01); H01M 10/0567 (2013.01); H01M 10/0569 (2013.01); H01M 10/0583 (2013.01); H01M 50/46 (2021.01); H01M 2300/0071 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A folding type lithium air battery comprising:
a positive electrode composite;
a negative electrode composite; and
a separator,
wherein the separator is positioned between the positive electrode composite and the negative electrode composite, is bent to surround one edge of the positive electrode composite and an opposite edge of the negative electrode composite that is opposite to one edge of the positive electrode composite, thus forming a zigzag shape, and
the separator comprises a first electrolyte membrane that is in contact with the positive electrode composite; a second electrolyte membrane that is in contact with the negative electrode composite; and a diffusion prevention membrane that is positioned between the first electrolyte membrane and the second electrolyte membrane,
wherein the first electrolyte membrane comprises a first reinforcing layer and a first electrolyte solution impregnated in the first reinforcing layer, and the second electrolyte membrane comprises a second reinforcing layer and a second electrolyte solution impregnated in the second reinforcing layer,
wherein the first electrolyte solution comprises a first ionic liquid, a first polymer, and a first lithium salt,
wherein the second electrolyte solution comprises a second ionic liquid, a second polymer, and a second lithium salt,
wherein the diffusion prevention membrane is selected from the group consisting of a sulfide-based solid electrolyte and an oxide-based solid electrolyte,
wherein the positive electrode composite comprises a first positive electrode, a second positive electrode, and a porous structure positioned between the first positive electrode and the second positive electrode,
the negative electrode composite comprises a first negative electrode, a second negative electrode, and a negative electrode current collector positioned between the first negative electrode and the second negative electrode, and
wherein the folding type lithium air battery has an electrode length ratio satisfying the following Equation 1,
Electrode length ratio: positive electrode(L2)≤negative electrode(L4)<separator(L3)≤porous structure(L1)  [Equation 1]
(in Equation 1, the positive electrode (L2) is the first positive electrode or the second positive electrode, and the negative electrode (L4) is the first negative electrode or the second negative electrode).