Preparation of inorganic–organic hybrid proton exchange membrane with chemically bound hydroxyethane diphosphonic acid
Preparation of inorganic–organic hybrid proton exchange membrane with chemically bound hydroxyethane diphosphonic acid
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DOI：
10.1002/app.36972
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发表时间：
2012-11
影响因子：
3
通讯作者：
C. Shen;Zhihan Guo;Cheng Chen;Shanjun Gao
中科院分区：
文献类型：
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作者：
C. Shen;Zhihan Guo;Cheng Chen;Shanjun Gao
以3-环氧丙氧丙基三甲氧基硅烷（GPTMS）和1-羟基乙烷-1，1-二膦酸（HEDPA）为原料，采用溶胶-凝胶法制备了质子导电无机-有机杂化中温膜。为了防止膦酸的浸出，使用三乙胺作为催化剂促进HEDPA和GPTMS反应以取代膦酸基团。傅里叶变换红外光谱表明，HEDPA的POH与GPTMS的环氧环反应，使HEDPA的膦酸基团与有机硅氧烷网络发生化学键合。热重-差示扫描量热法（TG-DSC）结果表明，杂化膜在250°C以下是热稳定的。杂化膜的质子传导率随着温度从30 ° C到130°C而增加。当GPTMS/HEDPA的摩尔比为2/1时，在130°C无水条件下的质子电导率可达1.0 × 10− 3S/cm，是一种很有前途的中温质子交换膜燃料电池质子交换膜。© 2012 Wiley Periodicals，Inc.应用聚合物科学杂志，2012年
Proton-conductive inorganic–organic hybrid intermediate-temperature membranes were prepared from 3-glycidoxypropyltrimethoxysilane (GPTMS) and 1-hydroxyethane-1,1-diphosphonic acid (HEDPA) by sol–gel process. To prevent the leaching out of phosphonic acid, triethylamine was used as catalyst to promote the reaction of HEDPA and GPTMS to immobilize phosphonic acid groups. Fourier transform infrared spectra revealed that phosphonic acid groups of HEDPA were chemically bounded to organosiloxane network as a result of the reaction of POH of HEDPA and epoxy ring of GPTMS. TG-DSC results indicated that the hybrid membranes were thermally stable up to 250°C. The proton conductivity of the hybrid membranes increased with temperature from 30 to 130°C. The proton conductivity of hybrid membrane with the molar ratio of GPTMS/HEDPA = 2/1 can reach up to 1.0 × 10−3 S/cm under anhydrous condition at 130°C, which reveals that this membrane is a promising proton exchange membrane for intermediate-temperature proton exchange membrane fuel cell. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012