TY - JOUR
T1 - A facile approach to prepare self-cross-linkable sulfonated poly(ether ether ketone) membranes for direct methanol fuel cells
AU - Li, Hongtao
AU - Zhang, Gang
AU - Wu, Jing
AU - Zhao, Chengji
AU - Jia, Qiong
AU - Lew, Christopher M.
AU - Zhang, Liyuan
AU - Zhang, Yang
AU - Han, Miaomiao
AU - Zhu, Jing
AU - Shao, Ke
AU - Ni, Jing
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
Y1 - 2010
N2 - Sulfonated poly(ether ether ketone) containing hydroxyl groups (SPEEK-OH) has been prepared for use as a proton exchange membrane (PEM) by reducing the carbonyl groups on the main chain of the polymers. With the goal of reducing water uptake and methanol permeability, a facile thermal-cross-linking process is used to obtain the cross-linked membranes. The properties of the cross-linked membranes with different cross-linked density are measured and compared with the pristine membrane. Notably, SPEEK-4 with the highest cross-linked density shows a water uptake of 39% and a methanol permeability of 2.52 × 10 -7 cm2 s-1, which are much lower than those of the pristine membrane (63.2% and 5.37 × 10-7 cm2 s-1, respectively). These results indicate that this simple approach is very effective to prepare cross-linked proton exchange membranes for reducing water uptake and methanol permeability.
AB - Sulfonated poly(ether ether ketone) containing hydroxyl groups (SPEEK-OH) has been prepared for use as a proton exchange membrane (PEM) by reducing the carbonyl groups on the main chain of the polymers. With the goal of reducing water uptake and methanol permeability, a facile thermal-cross-linking process is used to obtain the cross-linked membranes. The properties of the cross-linked membranes with different cross-linked density are measured and compared with the pristine membrane. Notably, SPEEK-4 with the highest cross-linked density shows a water uptake of 39% and a methanol permeability of 2.52 × 10 -7 cm2 s-1, which are much lower than those of the pristine membrane (63.2% and 5.37 × 10-7 cm2 s-1, respectively). These results indicate that this simple approach is very effective to prepare cross-linked proton exchange membranes for reducing water uptake and methanol permeability.
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U2 - 10.1016/j.jpowsour.2010.06.106
DO - 10.1016/j.jpowsour.2010.06.106
M3 - Article
AN - SCOPUS:77956477794
SN - 0378-7753
VL - 195
SP - 8061
EP - 8066
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 24
ER -
