TY - JOUR
T1 - Tuning the Hydrophobic Component in Reinforced Poly(arylimidazolium)-Based Anion Exchange Membranes for Alkaline Fuel Cells
AU - Ahmed Mahmoud, Ahmed Mohamed
AU - Miyatake, Kenji
N1 - Funding Information:
This work was partly supported by the New Energy and Industrial Technology Development Organization (NEDO) of Japan, by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) Japan through Grant-in-Aids for Scientific Research (18H05515) and MEXT Program: Data Creation and Utilization Type Material Research and Development Project (JPMXP1122712807), by JKA promotion funds from AUTORACE, and by Iwatani Naoji foundation.
Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022
Y1 - 2022
N2 - A series of imidazolium-based aromatic copolymers were synthesized using fluorinated and non-fluorinated hydrophobic monomers. The quaternized copolymers were reinforced with the plasma-treated porous polyethylene substrate to provide flexible, homogeneous membranes. Cross-sectional SEM images revealed a triple-layer structure. The reinforced membranes exhibited phase-separated morphology as confirmed through TEM images. Among the membranes, QQP-MEIm-PE-containing quinquephenylene hydrophobic groups exhibited the most balanced properties (ion conductivity, mechanical strength, and alkaline stability). In particular, QQP-MEIm-PE exhibited excellent elongation properties with 24 MPa maximum stress and 205% elongation at break. A single H2/O2 fuel cell using the QQP-MEIm-PE membrane (1.26 meq g-1) and non-PGM-(Fe-N-C) cathode achieved 222 mW cm-2, which accounted for 888 mW mg-1Pt at 560 mA cm-2. Reasonable durability was confirmed with the membrane in the operating fuel cell.
AB - A series of imidazolium-based aromatic copolymers were synthesized using fluorinated and non-fluorinated hydrophobic monomers. The quaternized copolymers were reinforced with the plasma-treated porous polyethylene substrate to provide flexible, homogeneous membranes. Cross-sectional SEM images revealed a triple-layer structure. The reinforced membranes exhibited phase-separated morphology as confirmed through TEM images. Among the membranes, QQP-MEIm-PE-containing quinquephenylene hydrophobic groups exhibited the most balanced properties (ion conductivity, mechanical strength, and alkaline stability). In particular, QQP-MEIm-PE exhibited excellent elongation properties with 24 MPa maximum stress and 205% elongation at break. A single H2/O2 fuel cell using the QQP-MEIm-PE membrane (1.26 meq g-1) and non-PGM-(Fe-N-C) cathode achieved 222 mW cm-2, which accounted for 888 mW mg-1Pt at 560 mA cm-2. Reasonable durability was confirmed with the membrane in the operating fuel cell.
KW - alkaline fuel cells
KW - alkaline stability
KW - hydroxide ion conductivity
KW - non-precious cathode catalysts
KW - reinforced anion exchange membranes
UR - http://www.scopus.com/inward/record.url?scp=85143603996&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85143603996&partnerID=8YFLogxK
U2 - 10.1021/acsaem.2c02868
DO - 10.1021/acsaem.2c02868
M3 - Article
AN - SCOPUS:85143603996
SN - 2574-0962
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
ER -