Fuel cell performance using a phosphonated polysulphone ionomer (PSUgPVPA) in the PEM cathode electrode
(2013) In ECS Transactions 45(23). p.33-45- Abstract
- Inexpensive and environmentally friendly electrolyte polymers that can be operated at higher temperatures and drier conditions are highly interesting for PEM fuel cells for automotive, portable power and stationary electricity generation applications. In this study an ionomer based on polysulfone grafted with poly(vinylphosphonic acid) (PSUgPVPA) in the cathode Pt/C catalyst layer (CL) was electrochemically characterized and compared to Nafion. The performance at different levels of humidity at 80 ºC was evaluated by polarization and cyclic voltammetry. The results show that the performance of the PSUgPVPA-based cathode CL is comparable to that of Nafion at 100% relative humidity (RH) but with some instabilities. However, at drier... (More)
- Inexpensive and environmentally friendly electrolyte polymers that can be operated at higher temperatures and drier conditions are highly interesting for PEM fuel cells for automotive, portable power and stationary electricity generation applications. In this study an ionomer based on polysulfone grafted with poly(vinylphosphonic acid) (PSUgPVPA) in the cathode Pt/C catalyst layer (CL) was electrochemically characterized and compared to Nafion. The performance at different levels of humidity at 80 ºC was evaluated by polarization and cyclic voltammetry. The results show that the performance of the PSUgPVPA-based cathode CL is comparable to that of Nafion at 100% relative humidity (RH) but with some instabilities. However, at drier conditions significant losses of performance for the PSUgPVPA-based cathode was observed, concomitant to a reduced electrochemical surface area. The lower performance at low humidity is concluded to be due to a combination of lower proton conductivity and wettability or interference with oxygen reduction reaction at lower RH. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3734744
- author
- Wreland Lindström, Rakel ; Guerrero Aguinaga, Luis ; Oyarce, Alejandro ; Ubeda, Diego ; Ingratta, Mark LU ; Jannasch, Patric LU and Lindbergh, Göran
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- ECS Transactions
- volume
- 45
- issue
- 23
- pages
- 33 - 45
- publisher
- Electrochemical Society
- external identifiers
-
- scopus:84885807043
- wos:000325202900004
- ISSN
- 1938-6737
- DOI
- 10.1149/04523.0033ecst
- language
- English
- LU publication?
- yes
- id
- ce2754e4-38a0-4c0e-913f-1eaea6f5f228 (old id 3734744)
- alternative location
- http://ecst.ecsdl.org/content/45/23/33.abstract?sid=066a24f0-3cbc-46ea-9798-3a1439fb0a1d
- date added to LUP
- 2016-04-01 10:52:38
- date last changed
- 2022-01-26 03:23:24
@article{ce2754e4-38a0-4c0e-913f-1eaea6f5f228, abstract = {{Inexpensive and environmentally friendly electrolyte polymers that can be operated at higher temperatures and drier conditions are highly interesting for PEM fuel cells for automotive, portable power and stationary electricity generation applications. In this study an ionomer based on polysulfone grafted with poly(vinylphosphonic acid) (PSUgPVPA) in the cathode Pt/C catalyst layer (CL) was electrochemically characterized and compared to Nafion. The performance at different levels of humidity at 80 ºC was evaluated by polarization and cyclic voltammetry. The results show that the performance of the PSUgPVPA-based cathode CL is comparable to that of Nafion at 100% relative humidity (RH) but with some instabilities. However, at drier conditions significant losses of performance for the PSUgPVPA-based cathode was observed, concomitant to a reduced electrochemical surface area. The lower performance at low humidity is concluded to be due to a combination of lower proton conductivity and wettability or interference with oxygen reduction reaction at lower RH.}}, author = {{Wreland Lindström, Rakel and Guerrero Aguinaga, Luis and Oyarce, Alejandro and Ubeda, Diego and Ingratta, Mark and Jannasch, Patric and Lindbergh, Göran}}, issn = {{1938-6737}}, language = {{eng}}, number = {{23}}, pages = {{33--45}}, publisher = {{Electrochemical Society}}, series = {{ECS Transactions}}, title = {{Fuel cell performance using a phosphonated polysulphone ionomer (PSUgPVPA) in the PEM cathode electrode}}, url = {{http://dx.doi.org/10.1149/04523.0033ecst}}, doi = {{10.1149/04523.0033ecst}}, volume = {{45}}, year = {{2013}}, }