US 12,322,752 B2
High performance air stable solid polymer electrolyte
Matthew D. Widstrom, Ellicott City, MD (US); Peter Kofinas, N. Bethesda, MD (US); Arthur V. Cresce, Beltsville, MD (US); and Kang Xu, Potomac, MD (US)
Assigned to University of Maryland, College Park, College Park, MD (US); and The United States of America as Represented by the Secretary of the Army, Washington, DC (US)
Filed by University of Maryland, College Park, College Park, MD (US); and The United States of America as Represented by the Secretary of the Army, Washington, DC (US)
Filed on Apr. 6, 2023, as Appl. No. 18/131,745.
Application 18/131,745 is a continuation of application No. 16/241,813, filed on Jan. 7, 2019, granted, now 11,631,892.
Claims priority of provisional application 62/613,858, filed on Jan. 5, 2018.
Prior Publication US 2024/0021873 A1, Jan. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/0525 (2010.01); H01M 4/38 (2006.01); H01M 4/505 (2010.01); H01M 4/58 (2010.01); H01M 10/0565 (2010.01)
CPC H01M 10/0565 (2013.01) [H01M 4/38 (2013.01); H01M 4/505 (2013.01); H01M 4/5825 (2013.01); H01M 10/0525 (2013.01); H01M 2300/0082 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electrolyte, comprising:
(a) at least one lithium salt in water; and
(b) at least one polymer;
wherein the molality of the lithium salt to water is between about 25 molal and about 30 molal, wherein the ionic conductivity of the electrolyte at 25° C. is between about 1 mS/cm and about 10 mS/cm, wherein the mass ratio of the at least one polymer to the at least one lithium salt is between about 1:100 and about 1:1, and wherein the electrolyte is a thin film having a thickness between about 100 μm and about 300 μm.