US 12,469,930 B2
Long-life lithium-sulfur battery using a novel flexible bi-layer solid state electrolyte
Sri Narayan, Los Angeles, CA (US); Rodrigo Elizalde-Segovia, Los Angeles, CA (US); Buddhinie Jayathilake, Los Angeles, CA (US); and Ahmed Irshad Maniyanganam, Los Angeles, CA (US)
Assigned to University of Southern California, Los Angeles, CA (US)
Appl. No. 17/613,873
Filed by UNIVERSITY OF SOUTHERN CALIFORNIA, Los Angeles, CA (US)
PCT Filed May 26, 2020, PCT No. PCT/US2020/034497
§ 371(c)(1), (2) Date Nov. 23, 2021,
PCT Pub. No. WO2020/243066, PCT Pub. Date Dec. 3, 2020.
Claims priority of provisional application 62/852,951, filed on May 24, 2019.
Prior Publication US 2022/0247039 A1, Aug. 4, 2022
Int. Cl. H01M 50/449 (2021.01); H01M 4/40 (2006.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 10/0565 (2010.01); H01M 10/0585 (2010.01); H01M 50/414 (2021.01); H01M 50/451 (2021.01)
CPC H01M 50/449 (2021.01) [H01M 4/405 (2013.01); H01M 4/525 (2013.01); H01M 4/5825 (2013.01); H01M 4/622 (2013.01); H01M 10/0525 (2013.01); H01M 10/0565 (2013.01); H01M 10/0585 (2013.01); H01M 50/414 (2021.01); H01M 50/451 (2021.01); H01M 2300/0082 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A lithium-sulfur battery cell comprising:
a cathode that includes sulfur;
an anode that includes lithium metal; and
a bilayer membrane interposed between the cathode and the anode, the bilayer membrane including a mixed conduction membrane layer and a lithium ion-conducting layer, the lithium ion-conducting layer being interposed between the mixed conduction membrane layer and the anode, wherein the lithium-sulfur battery cell is substantially free of liquid-electrolyte, wherein the mixed conduction membrane layer is an electrical and ionic conductive material that selectively allows transport of lithium ions by intercalation, wherein the mixed conduction membrane layer includes a polymeric binder and a lithium intercalation material dispersed therein, wherein the lithium intercalation material is nanosized having at least one spatial dimension from about 10 nm to 100 nm or micron-sized having at least one spatial dimension between 100 nm and 10 microns, wherein the lithium intercalation material is a lithium transition metal oxide, and wherein the lithium transition metal oxide includes a compound selected from the group consisting of LiCoO2, LiFePO4, LiNiCoAlO2, LiNiMnCoO2, LiMn2O4, Li4Ti5O12, and combinations thereof.