US 11,881,554 B2
Polymer electrolyte and method for producing same
Daeil Kim, Daejeon (KR); Moon Jeong Park, Pohang-si (KR); Jonghyun Chae, Daejeon (KR); Ha Young Jung, Cheonan-si (KR); Suhwan Kim, Daejeon (KR); Sung Chul Lim, Daejeon (KR); and Jihoon Ahn, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR); and POSTECH ACADEMY-INDUSTRY FOUNDATION, Pohang-si (KR)
Appl. No. 16/954,836
Filed by LG CHEM, LTD., Seoul (KR); and POSTECH ACADEMY-INDUSTRY FOUNDATION, Pohang-si (KR)
PCT Filed Jul. 24, 2019, PCT No. PCT/KR2019/009179
§ 371(c)(1), (2) Date Jun. 17, 2020,
PCT Pub. No. WO2020/022777, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 10-2018-0086287 (KR), filed on Jul. 25, 2018.
Prior Publication US 2021/0091410 A1, Mar. 25, 2021
Int. Cl. H01M 10/0565 (2010.01); C08G 65/333 (2006.01); C08G 65/335 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/0565 (2013.01) [C08G 65/3355 (2013.01); C08G 65/33368 (2013.01); H01M 10/0525 (2013.01); H01M 2300/0028 (2013.01); H01M 2300/0065 (2013.01); H01M 2300/0082 (2013.01)] 8 Claims
 
1. A polymer electrolyte comprising:
a polymer comprising an ethylene oxide unit; and
a lithium salt,
wherein the polymer electrolyte is a solid electrolyte for an all-solid-state battery, and
wherein the polymer comprising the ethylene oxide unit is at least one selected from the group consisting of Formulas 5 to 8 below:

OG Complex Work Unit Chemistry

OG Complex Work Unit Chemistry
wherein 1≤n≤200.
 
8. An all-solid-state battery comprising a positive electrode, a negative electrode, and a solid polymer electrolyte interposed therebetween, wherein the solid polymer electrolyte is the polymer electrolyte of claim 1.