SULFONATED POLY(ETHER-ETHER-KETONE) POLYMER MEMBRANES FOR FUEL CELLS

被引：1
|
作者：
Hodakovska, J. [1 ]
Kleperis, J. [1 ]
机构：
[1] Univ Latvia, Inst Solid State Phys, 8 Kengaraga Str, LV-1063 Riga, Latvia
来源：
LATVIAN JOURNAL OF PHYSICS AND TECHNICAL SCIENCES | 2008年 / 45卷 / 06期
关键词：
proton conductor; polymer membrane; SPEEK; differential thermal analysis;
D O I：
10.2478/v10047-008-0029-z
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In the work, sulfonated poly(ether-ether-ketone) (SPEEK) ionomers were synthesized using an original (submitted for patent) and simple method. The resulting membranes were tested to determine parameters that are important for the use of this material in fuel cells (water absorption, sulfonation degree, conductivity, etc.). The thermo-gravimetric analysis has shown a good thermal stability in the range from RT to 200-220 degrees C, and two characteristic regions of weight loss -7.4% at similar to 140 degrees C (reversible water loss) and 10.3% at 200-220 degrees C (due to polymer degradation when cross-linked polymer chains permanently break down and their SO3H-groups are lost). The conductivity values obtained by the through-plane measurements of SPEEK membranes were 12 mS/cm at RT and 23 mS/cm at 80 degrees C.
引用
收藏
页码：55 / 60
页数：6
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