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Title: Alkaline anion exchange membranes derived from diphenylethylene and co-monomer feedstock

Abstract

The anion exchange membranes exhibit enhanced chemical stability and ion conductivity when compared with traditional styrene-based alkaline anion exchange membranes. A copolymer backbone is polymerized from a reaction medium that includes a diphenylalkylene and an alkadiene. The copolymer includes a plurality of pendant phenyl groups. The diphenyl groups on the polymer backbone are functionalized with one or more haloalkylated precursor substrates. The terminal halide from the precursor substrate can then be substituted with a desired ionic group. The diphenylethylene-based alkaline anion exchange membranes lack the .alpha.-hydrogens sharing tertiary carbons with phenyl groups from polystyrene or styrene-based precursor polymers, resulting in higher chemical stability. The ionic groups are also apart from each other by about 3 to 6 carbons in the polymer backbone, enhancing ion conductivity. These membrane are advantageous for use in fuel cells, electrolyzers employing hydrogen, ion separations, etc.

Inventors:
; ; ;
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Rensselaer Polytechnic Inst., Troy, NY (United States)
Sponsoring Org.:
USDOE; National Science Foundation (NSF)
OSTI Identifier:
1860198
Patent Number(s):
11207672
Application Number:
17/287,639
Assignee:
Rensselaer Polytechnic Institute (Troy, NY)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
DOE Contract Number:  
1545857; AC52-06NA25396
Resource Type:
Patent
Resource Relation:
Patent File Date: 10/22/2019
Country of Publication:
United States
Language:
English

Citation Formats

Lee, Sangwoo, Bae, Chulsung, Briem, Musashi J., and Park, Sungmin. Alkaline anion exchange membranes derived from diphenylethylene and co-monomer feedstock. United States: N. p., 2021. Web.
Lee, Sangwoo, Bae, Chulsung, Briem, Musashi J., & Park, Sungmin. Alkaline anion exchange membranes derived from diphenylethylene and co-monomer feedstock. United States.
Lee, Sangwoo, Bae, Chulsung, Briem, Musashi J., and Park, Sungmin. Tue . "Alkaline anion exchange membranes derived from diphenylethylene and co-monomer feedstock". United States. https://www.osti.gov/servlets/purl/1860198.
@article{osti_1860198,
title = {Alkaline anion exchange membranes derived from diphenylethylene and co-monomer feedstock},
author = {Lee, Sangwoo and Bae, Chulsung and Briem, Musashi J. and Park, Sungmin},
abstractNote = {The anion exchange membranes exhibit enhanced chemical stability and ion conductivity when compared with traditional styrene-based alkaline anion exchange membranes. A copolymer backbone is polymerized from a reaction medium that includes a diphenylalkylene and an alkadiene. The copolymer includes a plurality of pendant phenyl groups. The diphenyl groups on the polymer backbone are functionalized with one or more haloalkylated precursor substrates. The terminal halide from the precursor substrate can then be substituted with a desired ionic group. The diphenylethylene-based alkaline anion exchange membranes lack the .alpha.-hydrogens sharing tertiary carbons with phenyl groups from polystyrene or styrene-based precursor polymers, resulting in higher chemical stability. The ionic groups are also apart from each other by about 3 to 6 carbons in the polymer backbone, enhancing ion conductivity. These membrane are advantageous for use in fuel cells, electrolyzers employing hydrogen, ion separations, etc.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 28 00:00:00 EST 2021},
month = {Tue Dec 28 00:00:00 EST 2021}
}

Works referenced in this record:

Polymer matrix material
patent-application, January 2002


Ion conducting polymer comprising partially branched block copolymer and use thereof
patent-application, October 2015


Anionic Copolymerization of Butadiene and 1,1-Diphenylethylene
journal, January 1970


Ion-conducting membranes
patent, February 2017


Method for preparation of cation exchange membranes
patent, November 1978