US 11,855,258 B2
Secondary battery cell with solid polymer electrolyte
Deepak Shukla, Webster, NY (US); Gladys Rocio Montenegro Galindo, Webster, NY (US); Kevin M. Donovan, Bergen, NY (US); and Zichao Yang, King of Prussia, PA (US)
Assigned to CMC MATERIALS, INC., Aurora, IL (US)
Filed by Cabot Microelectronics Corporation, Aurora, IL (US)
Filed on Jun. 8, 2020, as Appl. No. 16/895,769.
Prior Publication US 2021/0384553 A1, Dec. 9, 2021
Int. Cl. H01M 10/0565 (2010.01); H01M 10/058 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 10/0565 (2013.01) [H01M 10/058 (2013.01); H01M 10/0525 (2013.01); H01M 2300/0082 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A solid polymer electrolyte comprising:
a cellulosic polymer matrix, the cellulosic polymer matrix comprising a network of a cellulosic polymer;
lithium ions dispersed in the cellulosic polymer matrix;
ceramic particles dispersed in the cellulosic polymer matrix, wherein the ceramic particles comprise a metal oxide;
one or more plasticizers dispersed in the cellulosic polymer matrix; and
one or more polymer networks in contact with the cellulosic polymer matrix, the one or more polymer networks comprising a cross-linked acrylate-containing polymer, further comprising 25% to 60% by weight of the cellulosic polymer matrix, 10% to 25% percent by weight of the acrylate-containing polymer, 20% to 35% percent by weight of a source of the lithium ions, 2% to 7% percent by weight of the one or more plasticizers, and 10% to 25% percent by weight of the ceramic particles.