Sulfonated poly(arylene ether sulfone) membranes based on biphenol for direct methanol fuel cells

2008 ◽  
Vol 25 (4) ◽  
pp. 732-737 ◽  
Author(s):  
Se Joon Im ◽  
Rajkumar Patel ◽  
Se Jong Shin ◽  
Jong Hak Kim ◽  
Byoung Ryul Min
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Arylene Ether ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Sulfonated Poly

Chemically stable thioether cross-linked membranes derived from sulfonated poly(arylene ether ketone)s for direct methanol fuel cells

2017 ◽  
Vol 30 (2) ◽  
pp. 129-138 ◽  
Author(s):  
Ye Li ◽  
Bo Yang ◽  
Shilin Wei ◽  
Chengzhen Geng ◽  
Ming Kang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Methanol Permeability ◽  
Arylene Ether ◽  
Direct Methanol ◽  
Ether Ketone ◽  
Methanol Fuel Cells ◽  
Cross Linker ◽  
The Cross ◽  
Sulfonated Poly

A series of thioether cross-linked membranes based on sulfonated poly(arylene ether ketone)s containing propenyl groups were prepared to solve the problem of high methanol permeability for proton electrolyte membrane in direct methanol fuel cells (DMFCs). For this purpose, 4,4′-thiobisbenzenethiol was selected as cross-linker, and the cross-linked structure was formed via thiol-ene click chemical reaction between propenyl and thiol groups. Compared with pristine membrane, the thioether cross-linked membranes exhibited improved mechanical properties and dimensional stabilities. As the cross-linker increased, the swelling ratio decreased from 11.01% to 8.64% at 20°C and from 15.18% to 10.69% at 80°C. Furthermore, the modified membranes exhibited reduced methanol permeability coefficients (down to 4.03 × 10−7 cm2 s−1), which was nearly half of the pristine membrane (7.66 × 10−7 cm2 s−1). Due to the thioether units, the cross-linked membranes showed enhanced oxidative stabilities, and the longest elapsed time in Fenton’s reagent was 225 min, which was 2.5 times longer than that of pristine polymeric membrane. Although the proton conductivity decreased upon the addition of cross-linker agent, the selectivity value increased due to the lower methanol permeability. Thus, all the results implied that the thioether cross-linked membranes were promising alternative materials for DMFCs application.

Block sulfonated poly(arylene ether ketone) containing flexible side-chain groups for direct methanol fuel cells usage

2012 ◽  
Vol 417-418 ◽  
pp. 61-68 ◽  
Author(s):  
Tianyi Na ◽  
Ke Shao ◽  
Jing Zhu ◽  
Hongcheng Sun ◽  
Zhongguo Liu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Side Chain ◽  
Arylene Ether ◽  
Direct Methanol ◽  
Ether Ketone ◽  
Methanol Fuel Cells ◽  
Sulfonated Poly

Novel side-chain-type sulfonated poly(arylene ether ketone) with pendant sulfoalkyl groups for direct methanol fuel cells

Polymer ◽  
2009 ◽  
Vol 50 (19) ◽  
pp. 4471-4478 ◽  
Author(s):  
Yang Zhang ◽  
Ying Wan ◽  
Chengji Zhao ◽  
Ke Shao ◽  
Gang Zhang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Side Chain ◽  
Arylene Ether ◽  
Direct Methanol ◽  
Ether Ketone ◽  
Methanol Fuel Cells ◽  
Chain Type ◽  
Sulfonated Poly
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