US 12,463,250 B2
Electrochemical cell having electrolyte with polymer localized on electrode surface
Yiqing Huang, Lexington, MA (US); Jia Du, Burlington, MA (US); and Dong Ren, Woburn, MA (US)
Assigned to Factorial Inc., Billerica, MA (US)
Filed by Factorial Inc., Woburn, MA (US)
Filed on Mar. 1, 2023, as Appl. No. 18/176,754.
Claims priority of provisional application 63/316,749, filed on Mar. 4, 2022.
Prior Publication US 2023/0282883 A1, Sep. 7, 2023
Int. Cl. H01M 10/0565 (2010.01)
CPC H01M 10/0565 (2013.01) [H01M 2300/0082 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electrochemical cell comprising:
a) an electrode; and
b) a polymer solid electrolyte, comprising:
i) an electrolyte salt;
ii) a solvent; and
iii) a polymer polymerized from a mixture containing the electrolyte salt, the solvent, and a monomer, wherein the polymer has at least a first portion localized on a surface of the electrode, wherein the polymer has a second portion located in pores of the electrode and the first portion of the polymer has a higher concentration of the polymer than that of the second portion in the pores of the electrode.