US 11,728,543 B2
Electrospinning of PVdF-HFP: novel composite polymer electrolytes (CPES) with enhanced ionic conductivities for lithium-sulfur batteries
Prashant N. Kumta, Pittsburgh, PA (US); Bharat Gattu, Pittsburgh, PA (US); Moni Kanchan Datta, Pittsburgh, PA (US); Oleg Velikokhatnyi, Pittsburgh, PA (US); Pavithra Murugavel Shanthi, Pittsburgh, PA (US); and Prashanth Jampani Hanumantha, Pittsburgh, PA (US)
Assigned to UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US)
Appl. No. 16/628,837
Filed by UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US)
PCT Filed Jul. 9, 2018, PCT No. PCT/US2018/041196
§ 371(c)(1), (2) Date Jan. 6, 2020,
PCT Pub. No. WO2019/010474, PCT Pub. Date Jan. 10, 2019.
Claims priority of provisional application 62/529,638, filed on Jul. 7, 2017.
Prior Publication US 2020/0136113 A1, Apr. 30, 2020
Int. Cl. H01M 50/44 (2021.01); D01D 5/00 (2006.01); D01F 1/10 (2006.01); H01M 10/052 (2010.01); H01M 10/0565 (2010.01); H01M 50/403 (2021.01); H01M 50/431 (2021.01); H01M 50/489 (2021.01); H01M 50/426 (2021.01); H01M 50/434 (2021.01); H01M 50/497 (2021.01); H01M 50/40 (2021.01); H01M 10/0525 (2010.01)
CPC H01M 50/44 (2021.01) [D01D 5/003 (2013.01); D01F 1/10 (2013.01); H01M 10/052 (2013.01); H01M 10/0565 (2013.01); H01M 50/40 (2021.01); H01M 50/403 (2021.01); H01M 50/426 (2021.01); H01M 50/431 (2021.01); H01M 50/434 (2021.01); H01M 50/489 (2021.01); H01M 50/497 (2021.01); H01M 10/0525 (2013.01); H01M 2300/0082 (2013.01); H01M 2300/0094 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A lithium ion conducting composite polymer electrolyte separator, comprising:
an activated nanofiber mat, comprising:
a nanofiber mat, comprising:
multiple layers of electrospun nanofibers, comprising:
a polymer having one or more polar halogen groups;
a lithium-containing solid or liquid electrolyte; and
from 10 to 20 weight percent of nanoparticle filler based on total weight of the lithium ion conducting composite polymer electrolyte separator, comprising fumed silica, nanoparticle silicon dioxide, and one or more of nanoparticle titanium dioxide, nanoparticle vanadium oxide, and nanoparticle boron trioxide; and
an activation solution comprising a liquid electrolyte, soaked in the nanofiber mat.