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首页> 外文期刊>Nanotechnology >Constructing anhydrous proton exchange membranes based on cadmium telluride nanocrystal-doped sulfonated poly(ether ether ketone)/polyurethane composites
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Constructing anhydrous proton exchange membranes based on cadmium telluride nanocrystal-doped sulfonated poly(ether ether ketone)/polyurethane composites

机译：基于碲化镉纳米晶掺杂磺化聚（醚醚酮）/聚氨酯复合材料的构建无水质子交换膜

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Cadmium telluride (CdTe) nanocrystals with thiol stabilizers have been applied widely in the fields of energy storage and transformation. The aim of this work is to develop anhydrous proton exchange membranes (PEMs) by introducing CdTe nanocrystals bearing thioglycolic acid (tga) or mercaptopropionic acid (mpa) stabilizers into sulfonated poly(ether ether ketone) (SPEEK) and polyurethane (PU) systems. In the prepared SPEEK/PU/CdTe membranes, CdTe nanocrystals could provide desirable properties such as improving mechanical strength and enhancing proton conductivity by combining with phosphoric acid (PA) molecules. Successful preparation of SPEEK/PU/CdTe/PA membranes was demonstrated by the identification of high and stable proton conductivity and satisfactory thermal/chemical stability and mechanical properties. The fine appearance of membranes revealed uniform dispersion of components. Measurements of properties showed that the SPEEK(74%)/PU/CdTe-mpa(20/60/20)/100%PA membrane as a candidate anhydrous PEM is promising for use in high-temperature proton exchange membrane fuel cells. Specifically, the recommended membrane showed a proton conductivity of 1.18 x 10(-1) S cm(-1) at 160 degrees C and 3.96 x 10(-2) S cm(-1) at 100 degrees C, lasting for 600 h, and a tensile stress of 14.6 MPa at room temperature. Mixing inorganic CdTe nanocrystals with polymers to form inorganic/organic composite membranes is effective for producing anhydrous PEMs with cheaper polymers without functional groups to conduct protons.
机译：碲化镉（CDTE）纳米晶体与硫醇稳定剂已广泛应用于能量储存和转化领域。这项工作的目的是通过将含有巯基乙酸（TGA）或巯基丙酸（MPA）稳定剂的CDTE纳米晶体引入磺化聚（醚醚酮）（Speek）和聚氨酯（PU）系统中，通过将CDTE纳米晶体进行无水质子交换膜（PEM）。在制备的Speek / PU / Cdte膜中，CdTe纳米晶体可以提供所需的性质，例如通过与磷酸（PA）分子组合来改善机械强度并提高质子电导率。通过鉴定高稳定的质子电导率和令人满意的热/化学稳定性和机械性能，证明了Speek / PU / CDTE / PA膜的成功制备。膜的精细外观显示成分的均匀分散。性质的测量显示，作为候选无水PEM的Speek（74％）/ PU / CDTE-MPA（20/60/20）/ 100％PA膜是有望用于高温质子交换膜燃料电池。具体地，推荐的膜在100摄氏度下，在160℃和3.96×10（-2）Scm（-​​1）时显示出1.18×10（-1）厘米（-1）的质子电导率，持续600小时，室温下的拉伸应力为14.6MPa。将无机CdTe纳米晶体与聚合物混合以形成无机/有机复合膜是有效生产无水PEM，其具有更便宜的聚合物而没有官能团进行质子。

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