US 12,444,749 B2
Anode protective layer for lithium-sulfur cylindrical cells
Elena Rogojina, San Jose, CA (US); Jerzy Gazda, Austin, TX (US); You Li, Sunnyvale, CA (US); Jesse Baucom, Sunnyvale, CA (US); Chandra B. Kc, San Jose, CA (US); Jingning Shan, San Jose, CA (US); and Ratnakumar Bugga, Arcadia, CA (US)
Assigned to Lyten, Inc., San Jose, CA (US)
Filed by LytEn, Inc., San Jose, CA (US)
Filed on Mar. 9, 2022, as Appl. No. 17/690,923.
Application 17/690,923 is a continuation in part of application No. 17/672,960, filed on Feb. 16, 2022.
Application 17/672,960 is a continuation in part of application No. 17/666,753, filed on Feb. 8, 2022.
Application 17/666,753 is a continuation in part of application No. 17/584,666, filed on Jan. 26, 2022, granted, now 11,367,895.
Application 17/584,666 is a continuation in part of application No. 17/578,240, filed on Jan. 18, 2022, granted, now 12,249,690.
Application 17/578,240 is a continuation in part of application No. 17/563,183, filed on Dec. 28, 2021, granted, now 11,404,692.
Application 17/563,183 is a continuation in part of application No. 17/383,803, filed on Jul. 23, 2021, granted, now 11,309,545.
Claims priority of provisional application 63/235,892, filed on Aug. 23, 2021.
Prior Publication US 2023/0035035 A1, Feb. 2, 2023
Int. Cl. H01M 4/62 (2006.01); H01M 4/66 (2006.01); H01M 4/80 (2006.01); H01M 10/04 (2006.01); H01M 10/0562 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/62 (2013.01) [H01M 4/663 (2013.01); H01M 4/80 (2013.01); H01M 10/0431 (2013.01); H01M 2004/021 (2013.01)] 33 Claims
OG exemplary drawing
 
1. A lithium-sulfur battery comprising:
an anode;
a solid-electrolyte interphase formed on the anode;
a protective layer formed at least partially within and on the solid-electrolyte interphase, the protective layer positioned proximal to the anode and comprising:
a plurality of wrinkled graphene nanoplatelets adjoined to one another by flexure points, each flexure point providing exposed carbon atoms; and
a plurality of fluorinated poly(meth)acrylates grafted onto at least some of the exposed carbon atoms, at least some fluorinated poly(meth)acrylates compatible with polymerization and cross-linking with one another responsive to exposure to one or more of free-radical initiators or an ultraviolet (UV) energetic environment;
a cathode positioned opposite to the anode;
a separator positioned between the cathode and the anode; and
an electrolyte in contact with the anode and dispersed throughout the cathode, wherein the lithium-sulfur battery is formed as a shell including a jelly roll.