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Studies on a novel anion-exchange membrane based on chitosan and ionized organic compounds with multiwalled carbon nanotubes for alkaline fuel cells

机译:基于壳聚糖和电离有机化合物的新型阴离子交换膜与碱性燃料电池多壁碳纳米管的研究

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In this work, a novel hydroxyl-anion-conducting membrane composed of chitosan (CTS), an ionized organic compound ([QAIM]OH), and hydroxylated multiwalled carbon nanotubes (MWCNTs-OH) has been fabricated through a blending-casting method assisted by a glutaraldehyde (GA) crosslinking process that can improve the mechanical properties of the membrane effectively. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy revealed that [QAIM]OH and MWCNTs-OH were successfully introduced into the CTS matrix. A chemical crosslinking reaction between CTS and GA could be confirmed by FTIR, X-ray photoelectron spectroscopy, and contact angle tests. By tuning the mass fraction of [QAIM]OH and MWCNTs-OH in the membrane, the maximum OH- conductivity (5.66x10(-3) S cm(-1) at room temperature) could be achieved for the composition CTS:[QAIM]OH (1:0.75 in mass) blend doped with 3% MWCNTs-OH. At a current density of 59.9 mA cm(-2), a membrane electrode assembly fabricated with the CTS/[QAIM]OH/ MWCNTs-OH membrane (1:0.5/3%) achieved a power density of 31.6 mW cm(-2) in a H-2/O-2 system at room temperature. Under the condition of intermediate temperature (100-140 degrees C) without water, the conductivities of the membranes increased with increasing temperature and the amount of [QAIM]OH, which acted as an ionic liquid in the membrane, indicating that the ionic transport behaviors could still be occurring. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46323.
机译:在这项工作中,一种新颖的羟基阴离子传导壳聚糖(CTS)的组成的膜,离子化有机化合物([凯姆] OH),和羟基化的多壁碳纳米管(MWCNT-OH)已经通过辅助的混合流延法制造的通过戊二醛(GA)交联处理,能有效地提高该膜的机械性能。傅里叶变换红外光谱(FTIR)和扫描电子显微镜表明,[加伊姆] OH和多壁碳纳米管-OH被成功地引入到CTS矩阵。 CTS和GA之间的化学交联反应可通过FTIR,X射线光电子能谱,和接触角测试来确认。通过调谐的[加伊姆] OH和多壁碳纳米管-OH的质量分数在膜中,最大OH-传导率(5.66x10(-3)S厘米(-1)在室温下)可以为所述组合物CTS来实现:[凯姆] OH(1:0.75质量)共混物掺杂有3%的多壁碳纳米管-OH。在59.9毫安厘米(-2)的电流密度,膜电极组件与CTS制造/ [凯姆] OH /多壁碳纳米管-OH膜(1:0.5 / 3%)获得的31.6毫瓦厘米的功率密度(-2 )在H-2 / O-2在室温下的系统。下中间温度(100-140℃)没有水的条件下,所述膜的电导率随着温度的升高和[凯姆] OH的量,其充当在膜的离子液体增加,表明离子迁移行为仍然可能发生。 (c)2018 Wiley期刊,Inc.J.Phill。聚合物。 SCI。 2018年,135,46323。

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