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Title: High temperature proton exchange membranes with enhanced proton conductivities at low humidity and high temperature based on polymer blends and block copolymers of poly(1,3-cyclohexadiene) and poly(ethylene glycol)

Journal Article · · Polymer
 [1];  [2];  [2];  [3];  [3];  [2];  [4];  [5];  [6]
  1. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
  2. Univ. of Southern Mississippi, Hattiesburg, MS (United States). School of Polymers and High Performance Materials
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemical and Biomolecular Engineering
  5. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
  6. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division

Hot (at 120 °C) and dry (20% relative humidity) operating conditions benefit fuel cell designs based on proton exchange membranes (PEMs) and hydrogen due to simplified system design and increasing tolerance to fuel impurities. In this paper, presented are preparation, partial characterization, and multi-scale modeling of such PEMs based on cross-linked, sulfonated poly(1,3-cyclohexadiene) (xsPCHD) blends and block copolymers with poly(ethylene glycol) (PEG). These low cost materials have proton conductivities 18 times that of current industry standard Nafion at hot, dry operating conditions. Among the membranes studied, the blend xsPCHD-PEG PEM displayed the highest proton conductivity, which exhibits a morphology with higher connectivity of the hydrophilic domain throughout the membrane. Simulation and modeling provide a molecular level understanding of distribution of PEG within this hydrophilic domain and its relation to proton conductivities. Finally, this study demonstrates enhancement of proton conductivity at high temperature and low relative humidity by incorporation of PEG and optimized sulfonation conditions.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Contributing Organization:
Univ. of Southern Mississippi, Hattiesburg, MS (United States)
Grant/Contract Number:
FG36-06GO16037; FG36-08GO88106; FG02-05ER15723; DGE-0801470; EPS-1004083; OCI 07-11134.5
OSTI ID:
1324149
Alternate ID(s):
OSTI ID: 1254775
Journal Information:
Polymer, Vol. 77; ISSN 0032-3861
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

References (64)

Two Fuel Cell Cars In Every Garage? journal September 2005
On the development of proton conducting materials for technological applications journal May 1997
The Grotthuss mechanism journal October 1995
Transport in Proton Conductors for Fuel-Cell Applications:  Simulations, Elementary Reactions, and Phenomenology journal October 2004
Evaluation of a Sol-Gel Derived Nafion/Silica Hybrid Membrane for Proton Electrolyte Membrane Fuel Cell Applications: I. Proton Conductivity and Water Content journal January 2001
Investigation of PEMFC operation above 100 °C employing perfluorosulfonic acid silicon oxide composite membranes journal July 2002
Atomistic Simulation of Water Percolation and Proton Hopping in Nafion Fuel Cell Membrane journal November 2010
Probing Selected Morphological Models of Hydrated Nafion Using Large-Scale Molecular Dynamics Simulations journal March 2010
Toward a Predictive Understanding of Water and Charge Transport in Proton Exchange Membranes journal March 2011
Approaches and Recent Development of Polymer Electrolyte Membranes for Fuel Cells Operating above 100 °C journal December 2003
Physical properties and supermolecular structure of perfluorinated ion-containing (nafion) polymers journal April 1977
Application of coupled thermal analysis techniques to thermodynamic studies of water interactions with a compressible ionic polymer matrix journal December 1984
Influence of temperature and humidity on the mechanical properties of Nafion® 117 polymer electrolyte membrane: Mechanical Properties of Nafion® 117 journal February 2005
The effect of equivalent weight, temperature, cationic forms, sorbates, and nanoinorganic additives on the sorption behavior of Nafion® journal November 2005
State of Understanding of Nafion journal October 2004
Recent developments in high-temperature proton conducting polymer electrolyte membranes journal March 2003
Non-Fluorinated Polymer Materials for Proton Exchange Membrane Fuel Cells journal August 2003
Poly(arylene ether) Ionomers Containing Sulfofluorenyl Groups for Fuel Cell Applications journal August 2005
Novel Sulfonated Poly(arylene ether):  A Proton Conductive Polymer Electrolyte Designed for Fuel Cells journal November 2003
Sulfonated Poly(aryl ether ketone)s Containing the Hexafluoroisopropylidene Diphenyl Moiety Prepared by Direct Copolymerization, as Proton Exchange Membranes for Fuel Cell Application journal October 2004
Synthesis and properties of a polyimide containing pendant sulfophenoxypropoxy groups journal January 2006
Tuned Polymer Electrolyte Membranes Based on Aromatic Polyethers for Fuel Cell Applications journal April 2007
Synthesis and properties of sulfonated polyimides from homologous sulfonated diamines bearing bis(aminophenoxyphenyl)sulfone journal January 2007
Synthesis and Properties of Sulfonated Poly[bis(benzimidazobenzisoquinolinones)] as Hydrolytically and Thermooxidatively Stable Proton Conducting Ionomers journal May 2008
Polymers Containing Di(1 H -benzo[ d ]imidazol-2-yl)arene Moieties:  Polymerization via N−C Coupling Reactions journal March 2008
Synthesis and properties of soluble sulfonated polybenzimidazoles from 3,3′-disulfonate-4,4′-dicarboxylbiphenyl as proton exchange membranes journal May 2009
Sulfonated Polybenzimidazoles for High Temperature PEM Fuel Cells journal August 2010
Thermally crosslinked sulfonated polyethersulfone proton exchange membranes for direct methanol fuel cells journal November 2012
Poly(sulfonated phenylene)-block-poly(arylene ether sulfone) copolymer for polymer electrolyte fuel cell application journal January 2013
Ion Transport by Nanochannels in Ion-Containing Aromatic Copolymers journal February 2014
Synthesis of Sulfonic Acid-Containing Polybenzoxazine for Proton Exchange Membrane in Direct Methanol Fuel Cells journal January 2014
Cross-Linked Sulfonated Poly(arylene ether sulfone) Membranes Formed by in Situ Casting and Click Reaction for Applications in Fuel Cells journal January 2015
A comparative study of phosphoric acid-doped m -PBI membranes journal October 2013
NMR, conductivity and neutron scattering investigation of ionic dynamics in the anhydrous polymer protonic conductor PEO(H3PO4)x) journal September 1988
Enhanced ionic conductivity of poly(ethylene imine) phosphate journal May 1996
Proton-conductive polyimides consisting of naphthalenediimide and sulfonated units alternately segmented by long aliphatic spacers journal January 2014
Recent Development of Polymer Electrolyte Membranes for Fuel Cells journal February 2012
Hydrocarbon-based fuel cell membranes: Sulfonated crosslinked poly(1,3-cyclohexadiene) membranes for high temperature polymer electrolyte fuel cells journal September 2015
Scientific Aspects of Polymer Electrolyte Fuel Cell Durability and Degradation journal October 2007
Hydrocarbon polymers containing six-membered rings in the main chain. Microstructure and properties of poly(1,3-cyclohexadiene) journal July 1998
Soluble polystyrene‐block‐poly(p‐phenylene) block copolymers prepared from polystyrene‐block‐poly(1,3‐cyclohexadiene) precursors. Study of the aromatization process journal October 1991
Architecturally and Chemically Modified Poly(1,3-cyclohexadiene) journal February 2008
A New Fluorinated Polymer Having Two Connected Rings in the Main Chain:  Synthesis and Characterization of Fluorinated Poly(1,3-cyclohexadiene) journal January 2008
1,3-Cyclohexadiene Polymers. 1. Anionic Polymerization journal February 2001
Conductivity Dependence of PEG Content in an Anhydrous Proton Conducting Sol−Gel Electrolyte journal February 2005
Synthesis and characterization of sulfonated poly(acrylene ether sulfones) journal March 1984
Thermostable ionomeric filled membrane for H2/O2 fuel cell journal July 1998
Sulfonation of polysulfones: Suitability of the sulfonated materials for asymmetric membrane preparation journal April 2002
Sulfonation and subsequent rections of ethylidene norbornane and dihydrodicyclopentadiene. The chemistry of some small molecule models for EPDM rubbers journal March 1982
Proton Conduction Mechanisms at Low Degrees of Hydration in Sulfonic Acid–Based Polymer Electrolyte Membranes journal August 2003
Reactive Molecular Dynamics Study of Proton Transport in Polymer Electrolyte Membranes journal September 2011
Synthesis and characterization of sulfonated‐fluorinated, hydrophilic‐hydrophobic multiblock copolymers for proton exchange membranes journal January 2009
A coarse-grained model for polyethylene glycol polymer journal December 2011
Multi-scale models for cross-linked sulfonated poly (1, 3-cyclohexadiene) polymer journal March 2012
Atomistic and Coarse-Grained Molecular Dynamics Simulation of a Cross-Linked Sulfonated Poly(1,3-cyclohexadiene)-Based Proton Exchange Membrane journal July 2012
Structure and Diffusion in Cross-Linked and Sulfonated Poly(1,3-cyclohexadiene)/Polyethylene Glycol-Based Proton Exchange Membranes journal March 2013
Structure and proton transport in proton exchange membranes based on cross-linked sulfonated poly (1, 3-cyclohexadiene) with varying local acid environment journal April 2013
VMD: Visual molecular dynamics journal February 1996
Estimation of the ion conductivity of a PEO-based polyelectrolyte system by molecular modeling journal September 2001
Photopolymerizable sulfonated poly(ethylene glycol) proton exchange membranes for microfluidic and fuel cell applications journal February 2012
Oxidation and epoxidation of poly(1,3-cyclohexadiene) journal December 2002
Thermal Degradation of Poly(1,3-cyclohexadiene) and its Dehydrogenated Derivatives: Influence of a Controlled Microstructure journal August 2006
Hyperbranched fluoropolymer and linear poly(ethylene glycol) based amphiphilic crosslinked networks as efficient antifouling coatings: An insight into the surface compositions, topographies, and morphologies
  • Gudipati, Chakravarthy S.; Greenlief, C. Michael; Johnson, Jeremiah A.
  • Journal of Polymer Science Part A: Polymer Chemistry, Vol. 42, Issue 24 https://doi.org/10.1002/pola.20466
journal January 2004
Fuel Cell Membrane Characterizations journal April 2015

Cited By (1)

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