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Title: Proton exchange membrane material and methods of making the same

Abstract

Hydrocarbon proton exchange membranes are disclosed that are composed of a material including a hydrophobic main chain, and acidic side chains. The main chain includes a polyaryl structure that is substantially free of ether linkages and also includes a fluoromethyl substituted carbon. The acidic side chains include a hydrocarbon tether terminated by a strongly acidic group, such as a fluoroalkyl sulfonate group. Chemical stability of the material is increased by removing the ether linkages from the main chain. The hydrophobic main chain and substantially hydrophilic side chains create a phase-separated morphology that affords enhanced transport of protons and water across the membrane even at low relative humidity levels. These materials are advantageous as membranes for use in fuel cells, redox flow batteries, water hydrolysis systems, sensors, electrochemical hydrogen compressors, actuators, water purifiers, gas separators, etc.

Inventors:
; ;
Issue Date:
Research Org.:
Rensselaer Polytechnic Inst., Troy, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1998267
Patent Number(s):
11621433
Application Number:
16/471,358
Assignee:
Rensselaer Polytechnic Institute (Troy, NY)
Patent Classifications (CPCs):
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
DOE Contract Number:  
EE0007647
Resource Type:
Patent
Resource Relation:
Patent File Date: 12/20/2017
Country of Publication:
United States
Language:
English

Citation Formats

Bae, Chulsung, Park, Eun Joo, and Han, Junyoung. Proton exchange membrane material and methods of making the same. United States: N. p., 2023. Web.
Bae, Chulsung, Park, Eun Joo, & Han, Junyoung. Proton exchange membrane material and methods of making the same. United States.
Bae, Chulsung, Park, Eun Joo, and Han, Junyoung. Tue . "Proton exchange membrane material and methods of making the same". United States. https://www.osti.gov/servlets/purl/1998267.
@article{osti_1998267,
title = {Proton exchange membrane material and methods of making the same},
author = {Bae, Chulsung and Park, Eun Joo and Han, Junyoung},
abstractNote = {Hydrocarbon proton exchange membranes are disclosed that are composed of a material including a hydrophobic main chain, and acidic side chains. The main chain includes a polyaryl structure that is substantially free of ether linkages and also includes a fluoromethyl substituted carbon. The acidic side chains include a hydrocarbon tether terminated by a strongly acidic group, such as a fluoroalkyl sulfonate group. Chemical stability of the material is increased by removing the ether linkages from the main chain. The hydrophobic main chain and substantially hydrophilic side chains create a phase-separated morphology that affords enhanced transport of protons and water across the membrane even at low relative humidity levels. These materials are advantageous as membranes for use in fuel cells, redox flow batteries, water hydrolysis systems, sensors, electrochemical hydrogen compressors, actuators, water purifiers, gas separators, etc.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {4}
}

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