首页> 外文期刊>Journal of Applied Polymer Science >Preparation and investigation of acid-base composite membranes with modified graphitic carbon nanosheets for direct methanol fuel cells
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Preparation and investigation of acid-base composite membranes with modified graphitic carbon nanosheets for direct methanol fuel cells

机译:用于直接甲醇燃料电池改性石墨碳纳米液的酸碱复合膜的制备及研究

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The ethylenediamine-modified graphite oxide (EGO)-doped sulfonated poly (arylene ether ketone) (SPEEK) composite membranes have been prepared and developed for fuel cell applications in the present work. The base-modified EGO improves the dispersion of inorganic nanosheet in the polymer matrix and enhances proton conductivity by creating continuous conduction pathways. Furthermore, the methanol barrier property also be enhanced due to the nanosheet block the methanol-transport channels. EGO-filled membranes display improved dimensional stability, proton conductivity, and ethanol permeability than those using SPEEK control and graphite oxide (GO)-filled membranes. In the direct methanol fuel cells (DMFCs), the SPEEK/EGO-1.5 membrane displays the highest current density of 395.9 mA/cm(2) at 60 degrees C, which is 1.6- and 1.4-fold higher than that of SPEEK (254.0 mA/cm(2)) and SPEEK/GO membrane (292.6 mA/cm(2)).
机译:已制备乙二胺改性石墨氧化物(EGO) - 已经制备并开发了本作工作中的燃料电池应用的制备和开发的磺酸磺化的氧化石墨氧化物(EGO)掺杂的磺化聚(亚芳基醚酮)(Speek)复合膜。 基础改性的自我改善了无机纳米片中在聚合物基质中的分散,通过产生连续传导途径来提高质子电导率。 此外,由于纳米片阻断甲醇输送通道,甲醇屏障性也增强。 EGO填充的膜显示出的尺寸稳定性,质子电导率和乙醇渗透性而不是使用Speek控制和石墨氧化物(GO)填充的膜。 在直接甲醇燃料电池(DMFC)中,Speek / EGO-1.5膜在60℃下显示出395.9 mA / cm(2)的最高电流密度,比Speek的6.6-1.4倍(254.0 MA / CM(2))和SPEEK / GO膜(292.6 mA / cm(2))。

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