US 12,170,352 B2
Composite separator and electrolyte for electrochemical cells
Hui Ye, Maple Grove, MN (US); Timothy T. Bomstad, Inver Grove Heights, MN (US); Parthasarathy M. Gomadam, Plymouth, MN (US); Gaurav Jain, Edina, MN (US); Christian S. Nielsen, River Falls, WI (US); Prabhakar A. Tamirisa, Brooklyn Park, MN (US); and Collette M. Vanelzen, Zimmermann, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Aug. 11, 2022, as Appl. No. 17/886,249.
Application 16/420,847 is a division of application No. 14/938,375, filed on Nov. 11, 2015, granted, now 10,333,173, issued on Jun. 25, 2019.
Application 17/886,249 is a continuation of application No. 16/420,847, filed on May 23, 2019, granted, now 11,437,649.
Claims priority of provisional application 62/079,583, filed on Nov. 14, 2014.
Prior Publication US 2023/0024041 A1, Jan. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/05 (2010.01); H01M 4/38 (2006.01); H01M 4/54 (2006.01); H01M 4/583 (2010.01); H01M 6/16 (2006.01); H01M 6/18 (2006.01); H01M 10/052 (2010.01); H01M 10/0565 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H01M 50/417 (2021.01); H01M 50/429 (2021.01); H01M 50/491 (2021.01); H01M 50/411 (2021.01)
CPC H01M 10/0568 (2013.01) [H01M 4/382 (2013.01); H01M 4/54 (2013.01); H01M 4/583 (2013.01); H01M 4/5835 (2013.01); H01M 6/166 (2013.01); H01M 6/181 (2013.01); H01M 10/052 (2013.01); H01M 10/0565 (2013.01); H01M 10/0569 (2013.01); H01M 50/417 (2021.01); H01M 50/429 (2021.01); H01M 50/491 (2021.01); H01M 50/411 (2021.01); H01M 2220/30 (2013.01); H01M 2300/0025 (2013.01); H01M 2300/0085 (2013.01)] 20 Claims
 
1. An electrochemical cell comprising:
a first electrolyte complex comprising:
a glyme in an amount of 18 to 54 weight percent based on total weight of glyme and lithium salt;
a lithium salt in an amount of 46 to 82 weight percent based on total weight of glyme and lithium salt, and
a polymeric complexing agent in an amount of 5 to 50 percent by weight of combined glyme, lithium salt, and polymeric complexing agent;
an anode;
a cathode;
a separator film having a first major surface and a second major surface; and
an electrolyte film contacting the first major surface of the separator film, the electrolyte film comprising the first electrolyte complex.