TY - JOUR
T1 - Novel covalent-ionically cross-linked membranes with extremely low water swelling and methanol crossover for direct methanol fuel cell applications
AU - Wang, Jing
AU - Zhao, Chengji
AU - Zhang, Gang
AU - Zhang, Yang
AU - Ni, Jing
AU - Ma, Wenjia
AU - Na, Hui
N1 - Funding Information:
The authors thank the China High-Tech Development 863 Program (grant no. 2007AA03Z218 ) for financial support of this work.
PY - 2010/11
Y1 - 2010/11
N2 - In this paper, a sulfonated poly(arylene ether ketone) bearing carboxylic acid groups (C-SPEEK) was first synthesized. Then a new series of covalent-ionically cross-linked membranes using a poly(ether ether ketone) bearing amino groups (Am-PEEK) as a cross-linker were prepared for direct methanol fuel cell applications. Lower water swelling and lower methanol permeability membranes with higher mechanical strength were obtained via this covalent-ionically cross-linking method. The cross-linked network structure greatly improved the thermal and oxidative stability as compared to C-SPEEK membrane. The proton conductivity of C-SPEEK/Am-PEEKs was lower than that of non-cross-linked membrane, but its selectivity was higher. The properties of the cross-linked membranes in particular C-SPEEK/Am-PEEK-10 were investigated to confirm their potential applicability in fuel cells.
AB - In this paper, a sulfonated poly(arylene ether ketone) bearing carboxylic acid groups (C-SPEEK) was first synthesized. Then a new series of covalent-ionically cross-linked membranes using a poly(ether ether ketone) bearing amino groups (Am-PEEK) as a cross-linker were prepared for direct methanol fuel cell applications. Lower water swelling and lower methanol permeability membranes with higher mechanical strength were obtained via this covalent-ionically cross-linking method. The cross-linked network structure greatly improved the thermal and oxidative stability as compared to C-SPEEK membrane. The proton conductivity of C-SPEEK/Am-PEEKs was lower than that of non-cross-linked membrane, but its selectivity was higher. The properties of the cross-linked membranes in particular C-SPEEK/Am-PEEK-10 were investigated to confirm their potential applicability in fuel cells.
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U2 - 10.1016/j.memsci.2010.07.022
DO - 10.1016/j.memsci.2010.07.022
M3 - Article
AN - SCOPUS:77956277170
VL - 363
SP - 112
EP - 119
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
IS - 1-2
ER -