Sulfonated polyether ether ketone composite membrane using tungstosilicic acid supported on silica-aluminium oxide for direct methanol fuel cell (DMFC)
Sulfonated polyether ether ketone composite membrane using tungstosilicic acid supported on silica-aluminium oxide for direct methanol fuel cell (DMFC)
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DOI：
10.1016/j.memsci.2008.11.052
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发表时间：
2009-03-05
影响因子：
9.5
通讯作者：
Mustafa, A.
中科院分区：
文献类型：
--
作者：
Ismail, A. F.;Othman, N. H.;Mustafa, A.
以磺化聚醚醚酮（SPEEK）为聚合物，以钨钨酸（SiWA）为质子导电填料，制备了SiO2-Al 2 O3复合膜。SiWA被固定在稳定的结构（复合氧化物）上，使得它变得不溶于水。使用1H NMR和FTIR对SPEEK聚合物进行表征。对无机质子传导填料进行XRD分析，以揭示SiWA与复合氧化物之间存在相互作用。用扫描电镜对膜的结构和表面形貌进行了表征，并从质子传导率、吸水率和甲醇渗透率等方面考察了膜的性能。发现无机质子传导填料的存在导致高的吸水率和质子传导率（最大值6.1 × 10（-2）Scm（-1））。低甲醇渗透值记录的膜，这似乎是一个非常有前途的材料，用于DMFC。(c)2008 Elsevier B. V.保留所有权利。
New composite membranes were prepared using sulfonated polyether ether ketone (SPEEK) polymer and inorganic proton conducting fillers developed from tungstosilicic acids (SiWA) loaded on silica-aluminium oxide (SiO2-Al2O3) Composite. SiWA was fixed on stable structure (composite oxide) so that it became insoluble in water. The SPEEK polymers were characterized using H NMR and FTIR. XRD analysis was performed on the inorganic proton conducing fillers to reveal the existence of the interaction between SiWA and composite oxide. The membrane structural properties and surface morphologies were characterized with SEM and their performance were examined in terms of proton conductivity, water uptake and methanol permeability. It was found that the presence of inorganic proton conducting fillers led to both high water uptake and proton conductivity (maximum value 6.1 x 10(-2) Scm(-1)). Low methanol permeability values were recorded for the membranes which appeared as a very promising material to be used in DMFC. (c) 2008 Elsevier B.V. All rights reserved.