US 12,015,156 B2
Solvents and slurries comprising a poly(carboxylic acid) binder for silicon electrode manufacture
Lu Zhang, Lisle, IL (US); Zhangxing Shi, Westmont, IL (US); Andrew Jansen, Bolingbrook, IL (US); and Stephen Trask, Batavia, IL (US)
Assigned to UCHICAGO ARGONNE, LLC, Chicago, IL (US)
Filed by UCHICAGO ARGONNE, LLC, Chicago, IL (US)
Filed on Nov. 15, 2022, as Appl. No. 17/987,605.
Application 17/987,605 is a division of application No. 16/886,908, filed on May 29, 2020, granted, now 11,532,818.
Prior Publication US 2023/0087760 A1, Mar. 23, 2023
Int. Cl. H01B 1/22 (2006.01); C08K 3/02 (2006.01); C08K 3/04 (2006.01); C09D 1/00 (2006.01); C09D 7/20 (2018.01); C09D 7/40 (2018.01); H01M 4/04 (2006.01); H01M 4/134 (2010.01); H01M 4/1395 (2010.01); H01M 4/38 (2006.01); H01M 4/60 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/622 (2013.01) [C08K 3/02 (2013.01); C08K 3/04 (2013.01); C09D 1/00 (2013.01); C09D 7/20 (2018.01); C09D 7/67 (2018.01); H01B 1/22 (2013.01); H01M 4/0404 (2013.01); H01M 4/0471 (2013.01); H01M 4/134 (2013.01); H01M 4/1395 (2013.01); H01M 4/386 (2013.01); H01M 10/0525 (2013.01); C08K 2003/023 (2013.01); C08K 2201/005 (2013.01); C08K 2201/011 (2013.01); H01M 2004/027 (2013.01); H01M 2220/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A silicon-containing electrode formed by coating a silicon-containing slurry onto a conductive current collector, and drying the resulting coating; wherein the slurry comprises:
a poly(carboxylic acid) binder and a particulate anode active material in a mixed solvent system comprising a first solvent and a second solvent that is miscible with the first solvent; wherein first solvent is an amide of Formula I:

OG Complex Work Unit Chemistry
R1, R2, and R3 each independently is H, alkyl, alkoxy, or a polyether group;
the second solvent is selected from the group consisting of water, and organic solvent, and a combination thereof;
the first solvent and the second solvent are present in the mixed solvent system in a respective volume ratio of about 99:1 to about 1:9;
the organic solvent comprises one or more material selected from the group consisting of an alcohol, an ether, a nitrile, and an amide that is different from the amide of the first solvent; and
the particulate anode active material comprises silicon-containing particles, or a combination of silicon-containing particles and carbon particles;
wherein the poly(carboxylic acid) binder comprises at least one material selected from the group consisting of poly(aspartic acid), poly(glutamic acid), poly(methacrylic acid), and poly(4-vinylbenzoic acid).