TY - JOUR
T1 - Durability of symmetrically and asymmetrically porous polybenzimidazole membranes for high temperature proton exchange membrane fuel cells
AU - Jheng, Li Cheng
AU - Chang, Wesley Jen Yang
AU - Hsu, Steve Lien Chung
AU - Cheng, Po Yang
N1 - Funding Information:
The authors are grateful for the financial support from the Ministry of Science and Technology (Taiwan, ROC) through project MOST 104-2221-E-006-240-MY2 . This research was, in part, supported by the Ministry of Education Taiwan, ROC . The Aim for the Top University Project to the National Cheng Kung University (NCKU).
Publisher Copyright:
© 2016 Published by Elsevier B.V.
PY - 2016/8/15
Y1 - 2016/8/15
N2 - Two types of porous polybenzimidazole (PBI) membranes with symmetric and asymmetric morphologies were fabricated by the template-leaching method and characterized by scanning electron microscope (SEM). Their physicochemical properties were compared in terms of acid-doping level, proton conductivity, mechanical strength, and oxidative stability. The durability of fuel cell operation is one of the most challenging for the PBI based membrane electrode assembly (MEA) used in high-temperature proton exchange membrane fuel cells (HT-PEMFCs). In the present work, we carried out a long-term steady-state fuel cell test to compare the effect of membrane structure on the cell voltage degradation. It has also been demonstrated that the asymmetrically porous PBI could bring some notable improvements on the durability of fuel cell operation, the fuel crossover problem, and the phosphoric acid leakage.
AB - Two types of porous polybenzimidazole (PBI) membranes with symmetric and asymmetric morphologies were fabricated by the template-leaching method and characterized by scanning electron microscope (SEM). Their physicochemical properties were compared in terms of acid-doping level, proton conductivity, mechanical strength, and oxidative stability. The durability of fuel cell operation is one of the most challenging for the PBI based membrane electrode assembly (MEA) used in high-temperature proton exchange membrane fuel cells (HT-PEMFCs). In the present work, we carried out a long-term steady-state fuel cell test to compare the effect of membrane structure on the cell voltage degradation. It has also been demonstrated that the asymmetrically porous PBI could bring some notable improvements on the durability of fuel cell operation, the fuel crossover problem, and the phosphoric acid leakage.
UR - https://www.scopus.com/pages/publications/84969540321
UR - https://www.scopus.com/pages/publications/84969540321#tab=citedBy
U2 - 10.1016/j.jpowsour.2016.05.043
DO - 10.1016/j.jpowsour.2016.05.043
M3 - Article
AN - SCOPUS:84969540321
SN - 0378-7753
VL - 323
SP - 57
EP - 66
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -