Synthesis and characterization of polyethylene-g-sulfonated polysulfone copolymers for proton exchange membranes

Hyung Kyu Kim, Min Zhang, Xuepei Yuan, Serguei Lvov, Tze-chiang Chung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper discusses a new class of PEMs that are based on a PE-g-s-PAES graft copolymer containing several sulfonated poly(arylene ethersulfone) side chains. The unique combination of hydrophobicity, semi-crystallinity, and high molecular weight of PE backbone offers PEM with a strong and stable (non-swellable) matrix, and the embedded hydrophilic s-PAES proton-conductive domains show only moderate water swelling (δ <15) even with high IEC >3 mmol/g in the s-PAES domains. All PE-g-s-PAES PEMs show higher through-plane conductivity (up to 160 mS/cm) than in-plane conductivity, as well as good fuel selectivity. Evidently, the low surface energy of PE backbone forms a thin hydrophobic layer on the PEM surfaces that not only result in anisotropic conductivity but also create a methanol diffusion barrier to prevent fuel loss. Overall, the newly developed PE-g-s-PAES membranes offer a desirable set of PEM properties, including conductivity, selectivity, mechanical strength, stability, and cost-effective, for fuel cell applications.

Original languageEnglish (US)
Title of host publicationPolymer Electrolyte Fuel Cells 12, PEFC 2012
Pages1055-1071
Number of pages17
Edition2
DOIs
StatePublished - Dec 1 2012
Event12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting - Honolulu, HI, United States
Duration: Oct 7 2012Oct 12 2012

Publication series

NameECS Transactions
Number2
Volume50
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting
CountryUnited States
CityHonolulu, HI
Period10/7/1210/12/12

Fingerprint

Polysulfones
Polyethylenes
Ion exchange
Protons
Copolymers
Membranes
Diffusion barriers
Graft copolymers
Hydrophobicity
Interfacial energy
Strength of materials
Swelling
Fuel cells
Methanol
Molecular weight
Costs
Water

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Kim, H. K., Zhang, M., Yuan, X., Lvov, S., & Chung, T. (2012). Synthesis and characterization of polyethylene-g-sulfonated polysulfone copolymers for proton exchange membranes. In Polymer Electrolyte Fuel Cells 12, PEFC 2012 (2 ed., pp. 1055-1071). (ECS Transactions; Vol. 50, No. 2). https://doi.org/10.1149/05002.1055ecst
Kim, Hyung Kyu ; Zhang, Min ; Yuan, Xuepei ; Lvov, Serguei ; Chung, Tze-chiang. / Synthesis and characterization of polyethylene-g-sulfonated polysulfone copolymers for proton exchange membranes. Polymer Electrolyte Fuel Cells 12, PEFC 2012. 2. ed. 2012. pp. 1055-1071 (ECS Transactions; 2).
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Kim, HK, Zhang, M, Yuan, X, Lvov, S & Chung, T 2012, Synthesis and characterization of polyethylene-g-sulfonated polysulfone copolymers for proton exchange membranes. in Polymer Electrolyte Fuel Cells 12, PEFC 2012. 2 edn, ECS Transactions, no. 2, vol. 50, pp. 1055-1071, 12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting, Honolulu, HI, United States, 10/7/12. https://doi.org/10.1149/05002.1055ecst

Synthesis and characterization of polyethylene-g-sulfonated polysulfone copolymers for proton exchange membranes. / Kim, Hyung Kyu; Zhang, Min; Yuan, Xuepei; Lvov, Serguei; Chung, Tze-chiang.

Polymer Electrolyte Fuel Cells 12, PEFC 2012. 2. ed. 2012. p. 1055-1071 (ECS Transactions; Vol. 50, No. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Kim HK, Zhang M, Yuan X, Lvov S, Chung T. Synthesis and characterization of polyethylene-g-sulfonated polysulfone copolymers for proton exchange membranes. In Polymer Electrolyte Fuel Cells 12, PEFC 2012. 2 ed. 2012. p. 1055-1071. (ECS Transactions; 2). https://doi.org/10.1149/05002.1055ecst