Enhanced Performance of a Sulfonated Poly(arylene ether ketone) Block Copolymer Bearing Pendant Sulfonic Acid Groups for Polymer Electrolyte Membrane Fuel Cells Operating at 80% Relative Humidity

2018 ◽  
Vol 10 (24) ◽  
pp. 20835-20844 ◽  
Author(s):  
Kyu Ha Lee ◽  
Ji Young Chu ◽  
Ae Rhan Kim ◽  
Dong Jin Yoo
Keyword(s):  
Block Copolymer ◽  
Relative Humidity ◽  
Polymer Electrolyte ◽  
Sulfonic Acid ◽  
Polymer Electrolyte Membrane ◽  
Electrolyte Membrane ◽  
Arylene Ether ◽  
Ether Ketone ◽  
Sulfonic Acid Groups ◽  
Sulfonated Poly

scholarly journals Polymer Electrolyte Membrane Fuel Cell Performance of a Sulfonated Poly(Arylene Ether Benzimidazole) Copolymer Membrane

2016 ◽  
Vol 2016 ◽  
pp. 1-8
Author(s):  
Hasan Ferdi Gerçel ◽  
Çağla Gül Tosun ◽  
Levent Akyalçın
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Proton Exchange ◽  
Cell Performance ◽  
Proton Nuclear Magnetic Resonance ◽  
Resonance Spectroscopy ◽  
Electrolyte Membrane ◽  
Arylene Ether ◽  
Sulfonated Poly

Disodium-3,3′-disulfonate-4,4′-dichlorodiphenylsulfone (SDCDPS) and 5,5′-bis[2-(4-hydroxyphenyl)benzimidazole] (HPBI) monomers were synthesized. Binding these monomers via nucleophilic aromatic polycondensation reaction, a sulfonated poly(arylene ether benzimidazole) copolymer was synthesized. Structures of monomers and copolymer were confirmed by proton nuclear magnetic resonance spectroscopy (1H NMR) and Fourier transform infrared (FTIR) spectroscopy analyses. Proton exchange membrane was prepared by dissolving copolymer in dimethylacetamide (DMAc) and casting onto a glass plate. Copolymer membrane was doped with sulfuric acid to ensure proton exchange character. Single cell performance of the copolymer membrane was tested in a polymer electrolyte membrane fuel cell test station. The highest power density of the membrane was measured as 23.7 mW cm−2 at 80°C. Thermogravimetric analysis (TGA) showed that as the degree of disulfonation is increased thermal stability of the copolymer is increased.

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