TY - JOUR
T1 - Hybrid proton conducting membranes based on sulfonated cross-linked polysiloxane network for direct methanol fuel cell
AU - Zhu, Jing
AU - Zhang, Gang
AU - Shao, Ke
AU - Zhao, Chengji
AU - Li, Hongtao
AU - Zhang, Yang
AU - Han, Miaomiao
AU - Lin, Haidan
AU - Li, Mu
AU - Na, Hui
N1 - Funding Information:
This work was supported by the China High-Tech Development 863 Program (Grant No. 2007AA03Z218 ) and National Natural Science Foundation of China (Grant No. 21074044 ) and Science and Technology Development Plan of Jilin Province (Grant No. 20100110 ).
PY - 2011/7/15
Y1 - 2011/7/15
N2 - A series of novel hybrid membranes based on sulfonated poly(arylene ether ketone)s (SNPAEKs), polysiloxane (KH-560) and sulfonated curing agent (BDSA) has been prepared by sol-gel and cross-linking reaction for direct methanol fuel cells (DMFCs). All the hybrid membranes (SKB-xx) show high thermal properties and improved oxidative stability compared with the pristine SNPAEK membrane. The sulfonated cross-linked polysiloxanes networks in the hybrid membranes enhance the mechanical properties and reduce the swelling ratio. The swelling ratio of SKB-20 is 22%, which is much lower than that of the pristine SNPAEK (37%) at 80 °C. Meanwhile, SKB-xx membranes with greatly reduced methanol permeabilities show comparative proton conductivities to pristine SNPAEK membranes. Notably, the proton conductivities of SKB-5 and SKB-10 reach to 0.192 S cm-1 and 0.179 S cm-1 at 80 °C, respectively, which are even higher than the 0.175 S cm-1 of SNPAEK.
AB - A series of novel hybrid membranes based on sulfonated poly(arylene ether ketone)s (SNPAEKs), polysiloxane (KH-560) and sulfonated curing agent (BDSA) has been prepared by sol-gel and cross-linking reaction for direct methanol fuel cells (DMFCs). All the hybrid membranes (SKB-xx) show high thermal properties and improved oxidative stability compared with the pristine SNPAEK membrane. The sulfonated cross-linked polysiloxanes networks in the hybrid membranes enhance the mechanical properties and reduce the swelling ratio. The swelling ratio of SKB-20 is 22%, which is much lower than that of the pristine SNPAEK (37%) at 80 °C. Meanwhile, SKB-xx membranes with greatly reduced methanol permeabilities show comparative proton conductivities to pristine SNPAEK membranes. Notably, the proton conductivities of SKB-5 and SKB-10 reach to 0.192 S cm-1 and 0.179 S cm-1 at 80 °C, respectively, which are even higher than the 0.175 S cm-1 of SNPAEK.
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U2 - 10.1016/j.jpowsour.2011.03.021
DO - 10.1016/j.jpowsour.2011.03.021
M3 - Article
AN - SCOPUS:79955482402
SN - 0378-7753
VL - 196
SP - 5803
EP - 5810
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 14
ER -
