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首页> 外文期刊>Synthetic Metals >Poly(ethylene glycol) plasticized poly(vinyl alcohol)/ poly(acrylamide-co-diallyldimethylammonium chloride) as alkaline anion-exchange membrane for potential fuel cell applications
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Poly(ethylene glycol) plasticized poly(vinyl alcohol)/ poly(acrylamide-co-diallyldimethylammonium chloride) as alkaline anion-exchange membrane for potential fuel cell applications

机译：聚（乙二醇）增塑的聚乙烯醇/聚（丙烯酰胺-二烯丙基二甲基氯化铵）作为碱性阴离子交换膜，可用于潜在的燃料电池应用

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摘要

This study reports a novel alkaline anion-exchange membrane from poly(vinyl alcohol)/poly(acrylamide-co-diallyldimethylammonium chloride) by incorporating poly(ethylene glycol) as a plasticizer and modified by chemical cross-linking method (PVA/PAADDA/PEG). The membranes are characterized by infrared spectra (FT-IR), scanning electron microscope (SEM) and thermogravimetric analysis (TG). The conductivity, water uptake, ion exchange capacity (IEC), and chemical stability of membranes are determined to evaluate their applicability in alkaline direct methanol alkaline fuel cells (DMAFC).The anionic conductivity (OH-conductivity) is found to be greatly dependent on the content of PAADDA and PEG in the PVA matrix. The conductivities of up to 1.53 × 10~(-3) S cm~(-1) at 25 C and 8.5 × 10~(-3) S cm~(-1) at 80°C are achieved for PVA/PAADDA/PEG in a mass ratio of 1:0.25:0.25. The membranes also show good alkali and oxidative stability. An open-circuit voltage of 0.85 V and an initial power density of 15.4mWcm~(-2) of ADMFC with the membrane (=1:0.25:0.25 by mass), 2 M methanol, 2 M KOH, and humidified oxygen are achieved at room temperature.
机译：这项研究报道了一种新型的碱性阴离子交换膜，该膜由聚（乙烯醇）/聚（丙烯酰胺-共二烯丙基二甲基氯化铵）组成，通过引入聚乙二醇作为增塑剂并通过化学交联方法（PVA / PAADDA / PEG）进行改性）。膜的特征在于红外光谱（FT-IR），扫描电子显微镜（SEM）和热重分析（TG）。确定膜的电导率，吸水率，离子交换容量（IEC）和化学稳定性，以评估其在碱性直接甲醇碱性燃料电池（DMAFC）中的适用性。发现阴离子电导率（OH-电导率）在很大程度上取决于PVA基质中PAADDA和PEG的含量。对于PVA / PAADDA /，在25°C下的电导率高达1.53×10〜（-3）S cm〜（-1），在80°C下的电导率高达8.5×10〜（-3）S cm〜（-1） PEG的质量比为1：0.25：0.25。该膜还显示出良好的碱和氧化稳定性。使用膜（按质量计= 1：0.25：0.25），2 M甲醇，2 M KOH和湿氧实现ADMFC的开路电压为0.85 V，初始功率密度为15.4mWcm〜（-2）在室温下。

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