scholarly journals PREPARATION AND PROPERTIES OF SULFONATED POLY(ARYL ETHER KETONE) BEARING PENDANT SULFONIC ACID GROUPS/PVA CROSSLINKED COMPOSITE MEMBRANES FOR DIRECT METHANOL FUEL CELLS

2013 ◽  
Vol 013 (8) ◽  
pp. 999-1005
Author(s):  
Xu Jing-mei ◽  
Cheng Hai-long ◽  
Bai Hong-wei ◽  
Ren Chun-li ◽  
Wang Zhe ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Direct Methanol Fuel Cells ◽  
Composite Membranes ◽  
Aryl Ether ◽  
Direct Methanol ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Methanol Fuel Cells ◽  
Sulfonic Acid Groups ◽  
Sulfonated Poly

The preparation of novel sulfonated poly(aryl ether ketone sulfone)/TiO2 composite membranes with low methanol permeability for direct methanol fuel cells

2020 ◽  
pp. 095400832095804
Author(s):  
Chengyun Yuan ◽  
Yinghan Wang
Keyword(s):  
Sulfonic Acid ◽  
Direct Methanol Fuel Cells ◽  
Composite Membranes ◽  
Methanol Permeability ◽  
Aryl Ether ◽  
Direct Methanol ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Sulfonic Acid Groups ◽  
Sulfonated Poly

A sulfonated poly(aryl ether ketone sulfone) (SPAEKS) with locally dense sulfonic acid groups is synthesized and different amounts of TiO2 is doped into SPAEKS matrix to prepare composite membranes (SPAEKS/TiO2-x). SEM shows that TiO2 in the composite membranes has good dispersibility when TiO2 content is not higher than 3%. The composite membranes show good mechanical properties, dimensional stability and oxidative stability. The proton conductivity of composite membranes is near to that of Nafion 117 membrane and methanol permeability of composite membranes is much lower than that of Nafion 117 membrane. Therefore, the proton selectivity of composite membranes is higher than that of Nafion 117 membrane. In particular, proton selectivity of SPAEKS/TiO2-3% (12.8 × 104 S s cm−3) is four times higher than that of Nafion 117 membrane (3.2 × 104 S s cm−3).

Intermolecular ionic cross-linked sulfonated poly(ether ether ketone) membranes with excellent mechanical properties and selectivity for direct methanol fuel cells

RSC Advances ◽  
2016 ◽  
Vol 6 (27) ◽  
pp. 23025-23032 ◽  
Author(s):  
Guibin Li ◽  
Chengji Zhao ◽  
Ying Cui ◽  
Tao Rong ◽  
Chongyi Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Direct Methanol Fuel Cells ◽  
Composite Membranes ◽  
Thermal Stabilities ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Direct Methanol ◽  
Ether Ketone ◽  
Methanol Fuel Cells ◽  
Sulfonated Poly

The composite membranes based on APEEK and SPEEK with good proton conductivity, excellent mechanical and thermal stabilities were prepared successfully.

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