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首页> 外文期刊>International Journal of Electrochemical Science >Fabrication of Composite Membrane Based on Silicotungstic Heteropolyacid Doped Polybenzimidazole for High Temperature PEMFC
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Fabrication of Composite Membrane Based on Silicotungstic Heteropolyacid Doped Polybenzimidazole for High Temperature PEMFC

机译：硅钨杂多酸掺杂聚苯并咪唑复合膜的高温PEMFC制备

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摘要

Stable proton conducting composite membranes (CM1-CM3) based on polybenzimidazole (PBI) andvarious weight percent (35, 50 and 65 wt %) of inorganic hetero poly acids (IHA) were prepared bydissolving PBI in methanesulfonic acid and required amount of IHA was then added to PBI solution.IHA were prepared by acid-catalyzed condensation of various ratios of silicotungstic acid (TSA) (35,50 and 65 wt %) and silica (TEOS) (65, 50 and 35 wt %) using sol-gel procedure. These materialswere characterized morphologically, studied their intrinsic structures and intimate relation with protonconductivity. It was found that thermal properties and proton conductivity of the composite membraneare strongly dependent on the IHA which increased with increase of IHA content. The compositemembrane containing 65 wt % of IHA showed highest thermal property and proton conductivity.-1Composite membrane containing 65 wt% of IHA displayed highest conductivity of 2.91x10 S/cm at150 C. Thus introduction of IHA into PBI matrix is an efficient route to improve thermal propertiesand proton conductivity of PBI.
机译：通过将PBI溶解在甲磺酸中制备出基于聚苯并咪唑（PBI）和各种重量百分比（35、50和65 wt％）的无机杂多酸（IHA）的稳定的质子传导复合膜（CM1-CM3），然后制备所需量的IHA使用溶胶-凝胶法通过酸催化缩合各种比例的硅钨酸（TSA）（35,50和65 wt％）和二氧化硅（TEOS）（65，50和35 wt％）制备IHA 。对这些材料进行了形态学表征，研究了它们的固有结构以及与质子传导性的密切关系。已经发现，复合膜的热性质和质子传导性强烈依赖于IHA，其随着IHA含量的增加而增加。含有65 wt％IHA的复合膜表现出最高的热性质和质子传导率.-1含有65 wt％IHA的复合膜在150°C时表现出最高传导率2.91x10 S / cm PBI的热性质和质子传导率

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