RT Journal Article
T1 Synthesis and characterization of sulfonated PEEK-WC-PES copolymers for fuel cell proton exchange membrane application
A1 Martos Gómez, Ana María
A1 Biasizzo, Miriam
A1 Trotta, Francesco
A1 Río, Carmen Del
A1 Varez, Alejandro
A1 Levenfeld Laredo, Belén
AB In this work we have developed new sulfonated cardo (lactonic group) PEEK-WC-PES random copolymers with different molar ratio. The degree of sulfonation was determined from elemental analysis and ion-exchange capacity (IEC). Sulfonation levels from 0.64 to 1 were easily achieved by varying and controlling the reaction conditions. Proton conductivity was evaluated by impedance spectroscopy (EIS). Activation energy for proton transport, determined by conductivity measurements ranged between 11 and 15 kJ mol(-1), suggesting a vehicular proton transport mechanism. The membrane with better performance in single fuel cell was PEEK-SWC-PES 70:30 with maximum power and current densities of 93.6 mW cm(-2) and 340 mA cm(-2), respectively.
PB Elsevier
SN 0014-3057
YR 2017
FD 2017-08-01
LK https://hdl.handle.net/10016/31392
UL https://hdl.handle.net/10016/31392
LA eng
NO This study was supported by Spanish Ministry of Economy and Competitiveness MINECO with projects MAT2016-78362-C4-3-R and MAT2013-46452-C4-3R and by the Regional Program through the Projects MATERYENER3CM S2013/MIT-2753 and PILCONAER S2013/MAE-2975 of the Community of Madrid. This research was supported by mobility grant of Universidad Carlos III de Madrid, Spain.
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RD 26 may. 2024