Ormosil/sulfonated polyetheretherketone-based hybrid composite proton conducting membranes
Ormosil/sulfonated polyetheretherketone-based hybrid composite proton conducting membranes
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Ormosil/磺化聚醚醚酮基杂化复合质子传导膜
DOI：
10.1149/1.2194648
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发表时间：
2006
影响因子：
3.9
通讯作者：
S. Greenbaum
中科院分区：
文献类型：
--
作者：
S. Licoccia;M. Vona;A. D’Epifanio;D. Marani;M. Vittadello;J. Jayakody;S. Greenbaum
制备了一种具有磺酸功能的改性硅烷（磺化二苯基硅二醇，SDPSD）并对其进行了表征。将得到的正硅油与磺化度高（0.9）的聚醚醚酮（SPEEK）混合，得到均匀的复合膜。复合材料的形成大大改变了SPEEK在吸水和溶解度方面的性能。采用热重分析、场发射扫描电镜、H-1核磁共振和Si-29核磁共振（溶液和固体）、电化学阻抗谱等方法研究了各组分和复合材料的结构和电化学性能。SPEEK/SDPSD复合材料高达0.1 S cm（-1）的电导率值和H-1扩散系数表明，SPEEK/SDPSD在120 S C下具有良好的质子传输特性，因此适合作为中间温度下聚合物电解质燃料电池的电解质。(C) 2006电化学学会。
A modified silane bearing a sulfonic acid function (sulfonated diphenylsilanediole, SDPSD) was prepared and characterized. The resulting ormosil was mixed with sulfonated polyetheretherketone (SPEEK) with high degree of sulfonation (0.9) leading to homogeneous composite membranes. The formation of the composite substantially modified the properties of SPEEK in terms of water uptake and solubility. The structural and electrochemical performance of the components and of the composite were investigated with thermogravimetric analysis, field emission scanning electron microscopy, H-1 and Si-29 nuclear magnetic resonance, both in solution and in the solid state, and electrochemical impedance spectroscopy. Both conductivity values, as high as 0.1 S cm(-1), and H-1 diffusion coefficients of the composite SPEEK/SDPSD demonstrated that it possesses good proton transport characteristics up to 120 S C, and it is then suitable for application as an electrolyte in polymer electrolyte fuel cells operating at intermediate temperature. (C) 2006 The Electrochemical Society.