US 12,218,310 B2
Weavable, conformable, wearable and flexible components for advanced battery technology
Prashant N. Kumta, Pittsburgh, PA (US); Moni K. Datta, Pittsburgh, PA (US); Prashanth Jampani Hanumantha, Pittsburgh, PA (US); Bharat Gattu, Pittsburgh, PA (US); and Pavithra Murugavel Shanthi, Pittsburgh, PA (US)
Assigned to UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US)
Appl. No. 16/647,050
Filed by UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US)
PCT Filed Sep. 17, 2018, PCT No. PCT/US2018/051319
§ 371(c)(1), (2) Date Mar. 13, 2020,
PCT Pub. No. WO2019/055906, PCT Pub. Date Mar. 21, 2019.
Claims priority of provisional application 62/559,012, filed on Sep. 15, 2017.
Prior Publication US 2020/0274201 A1, Aug. 27, 2020
Int. Cl. H01M 10/0585 (2010.01); D01D 5/00 (2006.01); D03D 1/00 (2006.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 10/04 (2006.01); H01M 10/0525 (2010.01); H01M 10/0565 (2010.01); H01M 4/02 (2006.01)
CPC H01M 10/0585 (2013.01) [D01D 5/0007 (2013.01); D03D 1/0088 (2013.01); H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 10/0436 (2013.01); H01M 10/0525 (2013.01); H01M 10/0565 (2013.01); D10B 2401/18 (2013.01); H01M 2004/022 (2013.01); H01M 2220/30 (2013.01); H01M 2300/0085 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A flexible energy storage system, comprising:
an electro-spun, stacked assembly that comprises:
a woven, flexible cathode mat in the form of a first electrospun sheet having a thickness from about 1 to about 6 microns, comprising:
electrospun sulfur wires, each having a diameter from greater than
about 100 nanometers to about 10 μm and a length from about 12
inches to about 24 inches; and
a lithium conducting polymer;
a woven flexible anode fiber mat in the form of a second electrospun sheet having a thickness from about 300 to about 500 microns, comprising:
a composite of electro-spun fibers, comprising:
about 45 to about 80% by weight of a silicon component; and
a polymer component;
a woven, flexible, lithium ion conducting gel-polymer electrolyte separator in the form of a third electrospun sheet, comprising:
an electrolyte fiber mat having a thickness from about 100 to about 500 microns, comprising:
multiple layers of electrospun nanofibers, comprising:
 a lithium-containing solid or liquid electrolyte;
 an electrospun PVdF-HFP polymer matrix; and
 a filler comprising fumed silica; and
an activation solution comprising lithium sulfur liquid electrolyte effective to activate the electrolyte fiber mat,
wherein each of the first, second and third electrospun sheets are woven together to form the flexible energy storage system.