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 = {2021},
month = {12}
}
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