Publication:
Synthesis and characterization of sulfonated PEEK-WC-PES copolymers for fuel cell proton exchange membrane application

Thumbnail Image
Identifiers
URI: https://hdl.handle.net/10016/31392
ISSN: 0014-3057
DOI: https://doi.org/10.1016/j.eurpolymj.2017.06.013
UXXI: AR/0000020441
Files
synthesis_EPJ_2017_ps.pdf (2.78 MB)
Publication date
2017-08-01
Defense date
Authors
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Impact
Google Scholar
Export
Research Projects
Organizational Units
Journal Issue
Abstract
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.
Description
Keywords
Peek-pes copolymers, Chlorosulfonic acid, Copolymer electrolyte membranes, Impedance spectroscopy, Proton Exchange Membrane Fuel Cell (PEMFC)
Bibliographic citation
European Polymer Journal, (2017), v. 93, pp.: 390-402.
Collections
DCIMIQ - CIMIQ - SPM - Artículos de Revistas