US 12,249,690 B2
Lithium-sulfur battery electrolyte compositions
Ratnakumar Bugga, Arcadia, CA (US); Jared Christopher Long, Sunnyvale, CA (US); Jeffrey Bell, Santa Clara, CA (US); and Karel Vanheusden, Woodside, CA (US)
Assigned to Lyten, Inc., San Jose, CA (US)
Filed by LytEn, Inc., San Jose, CA (US)
Filed on Jan. 18, 2022, as Appl. No. 17/578,240.
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.
Prior Publication US 2023/0031884 A1, Feb. 2, 2023
Int. Cl. H01M 10/0567 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H01M 4/02 (2006.01)
CPC H01M 10/0567 (2013.01) [H01M 4/364 (2013.01); H01M 4/38 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01); H01M 2300/004 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lithium-sulfur battery comprising:
an anode;
a cathode positioned opposite to the anode, the cathode having an overall porosity between 40% and 70% and comprising:
a plurality of non-hollow carbon spherical (NHCS) particles joined together forming a plurality of tubular NHCS particle agglomerates, each NCHS particle having a diameter between 30 nanometers (nm) and 60 nm and comprising:
a first region adjacent to a center of a respective NHCS particle, the first region having a first density of carbonaceous materials;
a second region adjacent to a surface a respective NHCS particle, the second region encapsulating the first region and formed from a second density of carbonaceous materials lower than the first density of carbonaceous materials, the first region and the second region in fluid communication with each other; and
a plurality of interconnected channels defined in shape by adjacent NHCS particles, at least some interconnected channels configured to be pre-loaded with an elemental sulfur and retain polysulfides (PS) based on one or more of the first density of carbonaceous materials or the second density of carbonaceous materials;
an electrolyte interspersed throughout the cathode and contacting the anode; and
a separator positioned between the anode and the cathode.