US 11,984,581 B2
Negative electrode for lithium metal battery and lithium metal battery comprising the same
Yonggun Lee, Suwon-si (KR); Saebom Ryu, Suwon-si (KR); Toshinori Sugimoto, Hwaseong-si (KR); Yooseong Yang, Yongin-si (KR); Wonseok Chang, Seoul (KR); and Joonseon Jeong, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD, Gyeonggi-do (KR); and SAMSUNG SDI CO., LTD., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR); and Samsung SDI Co., Ltd., Yongin-si (KR)
Filed on Oct. 27, 2020, as Appl. No. 17/081,161.
Application 17/081,161 is a continuation of application No. 15/581,072, filed on Apr. 28, 2017, granted, now 10,847,799.
Claims priority of application No. 10-2016-0053531 (KR), filed on Apr. 29, 2016; and application No. 10-2017-0049894 (KR), filed on Apr. 18, 2017.
Prior Publication US 2021/0083291 A1, Mar. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/134 (2010.01); H01M 4/1395 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/40 (2006.01); H01M 4/62 (2006.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01); H01M 10/0562 (2010.01); H01M 10/0565 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H01M 10/42 (2006.01); H01M 4/02 (2006.01); H01M 10/0585 (2010.01)
CPC H01M 4/134 (2013.01) [H01M 4/1395 (2013.01); H01M 4/366 (2013.01); H01M 4/382 (2013.01); H01M 4/405 (2013.01); H01M 4/62 (2013.01); H01M 4/622 (2013.01); H01M 4/628 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); H01M 10/0562 (2013.01); H01M 10/0565 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 10/4235 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 10/0585 (2013.01); H01M 2220/20 (2013.01); H01M 2300/0065 (2013.01); H01M 2300/0068 (2013.01); H01M 2300/0082 (2013.01); Y02E 60/10 (2013.01); Y02T 10/70 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A negative electrode for a lithium metal battery comprising:
a lithium metal active material layer comprising lithium metal or a lithium metal alloy; and
a protective layer comprising (A) a liquid electrolyte or (B) a polymer ionic liquid having a polymeric cation and optionally a first lithium salt, and a plurality of organic particles having an average particle size of greater than 1 micrometer to about 100 micrometers, the protective layer having a thickness of about 1 micrometer to about 10 micrometers and disposed on at least a portion of the lithium metal active material layer,
wherein the protective layer has a Young's modulus of about 106 pascals to about 1011 pascals, and
wherein the organic particles comprise a polystyrene homopolymer, a copolymer having a styrene repeating unit and having a weight average molecular weight of about 10,000 Daltons to about 100,000 Daltons, or a combination of the polystyrene homopolymer and the copolymer having a styrene repeating unit, and
wherein the liquid electrolyte (A) comprises (1) a second lithium salt and an organic solvent, or (2) an ionic liquid comprising a cation and an anion, or a combination of (1) and (2).