US 12,338,397 B2
Materials for separating mixtures via selective absorption
Gibum Kwon, Lawrence, KS (US); Bishwash Shrestha, Lawrence, KS (US); and Mohammadamin Ezazi, Lawrence, KS (US)
Assigned to University of Kansas, Lawrence, KS (US)
Filed by University of Kansas, Lawrence, KS (US)
Filed on Apr. 18, 2022, as Appl. No. 17/722,825.
Claims priority of provisional application 63/176,473, filed on Apr. 19, 2021.
Prior Publication US 2022/0331749 A1, Oct. 20, 2022
Int. Cl. C10G 25/00 (2006.01); B01D 71/40 (2006.01); H01M 8/0221 (2016.01)
CPC C10G 25/003 (2013.01) [B01D 71/401 (2022.08); H01M 8/0221 (2013.01); B01D 2325/18 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A fuel cell comprising an anode, a cathode in electrical communication with the anode, and an absorbent material in between the anode and the cathode, the absorbent material comprising a zwitterionic polymer, the zwitterionic polymer being a polymerization product of reactants comprising a zwitterionic monomer and a (meth) acrylate crosslinker, and wherein the zwitterionic monomer is selected from the group consisting of:
a zwitterionic monomer of Formula I, R—(CH2)m—NR′2+—(CH2)n-A−, wherein R is selected from a carboxyamide, a (meth)acrylate, and an alkyl; m is an integer of from 0 to 5; each R′ is independently selected from hydrogen and an alkyl; n is an integer of from 1 to 5; and A− is SO3− or CO2−;
a zwitterionic monomer of Formula II, R—(CH2)m-A−—(CH2)n—NR′3+, wherein R is an (meth)acrylate; m is an integer of from 1 to 5; A is PO4−; n is an integer of from 1 to 5; and each R′ is independently selected from hydrogen and an alkyl; and
carboxybetaine diacrylamide; (3-methacryloylamino-propyl)-(2-carboxy-ethyl) -dimethylammonium; 3-[Dimethyl-(2-hydroxyethyl)ammonio]-1-propanesulfonate; 1-methylpyridinium 3-sulfonate; and combinations thereof.