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Nafion修饰玻碳电极伏安法测定痕量铟

报道了一种用Nafion修饰玻碳电极测定痕量铟的新方法。研究了Na-fion膜的有关特性和测定的条件,当富集时间为5 mi  (本文共3页) 阅读全文>>

《Journal of Rare Earths》2019年03期
Journal of Rare Earths

Preparation and luminescent properties of CaF_2:Ln~(3+)(Ln:Er, Er/Yb)/Nafion composite films

In this work, CaF_2:Ln~(3+)(Ln:Er,Er/Yb)/Nafion composite films were prepared using Nafion as modifications and matrices by dripping method. The composite films were characterized by Fourier transform infrared spectroscopy(FT-IR), X-ray diffraction(XRD) and scanning electron microscopy(SEM). Composite films are transparent a...  (本文共5页) 阅读全文>>

《Journal of Energy Chemistry》2018年03期
Journal of Energy Chemistry

Ordered Nafion~? ionomers decorated polypyrrole nanowires for advanced electrochemical applications

Fabrication of novel electrode materials with ordered proton-migration channels is an effective strategy to enhance the proton conductivity of the electrode for polymer electrolyte membrane fuel cells. Here we report the electrochemical fabrication of ordered Nafion?ionomers decorated polypyrrole nanowires to construct the ordered proton-migration channels. Based on the electrostatic interaction between Nafion?ionome...  (本文共5页) 阅读全文>>

《化工新型材料》2017年01期
化工新型材料

直接甲醇燃料电池用Nafion膜改性研究进展

Nafion膜具有稳定的性能和良好的质子传导率,但存在阻醇性能差、成本高、不能在高温条件下使用等问题,不仅影响了燃料电池的产电性能还影响了它的使用寿命及转化率等。介绍了Nafio...  (本文共3页) 阅读全文>>

《催化学报》2016年07期
催化学报

Nafion含量对直接甲醇燃料电池阴极催化剂性能表达的影响(英文)

燃料电池是一种将燃料反应的化学能转化为电能的装置,可分为氢氧质子交换膜燃料电池(PEMFCs)、直接甲醇燃料电池(DMFCs)和直接甲酸燃料电池等.与PEMFCs相比,DMFCs以甲醇为燃料,燃料的储存运输和电池操作运行具有较高的安全性,所以近年来受到人们的广泛关注.膜电极组件(MEA)是DMFCs的核心部分,由气体扩散层(GDL)、催化层(CL)和质子交换膜(PEM)三部分组成.GDL用于提高电池传质能力,并同时作为MEA的集流体.PEM主要用于隔离燃料和氧气,进行质子传导.CL是MEA中的主要组成部分,为电化学反应提供场所.催化层由催化剂,质子传输介质和电子传输介质组成.通常,阳极催化剂采用Pt Ru/C,阴极采用Pt/C,质子传输介质为全氟磺酸树脂,如Nafion.CL的结构对电池性能有直接的影响,因此人们对CL的结构进行了详细的研究,并通过调节CL亲水性能、梯度催化层的结构设计等优化其结构.研究表明,当CL中Nafion...  (本文共6页) 阅读全文>>

《Journal of Energy Chemistry》2015年02期
Journal of Energy Chemistry

Development of proton-conducting membrane based on incorporating a proton conductor 1,2,4-triazolium methanesulfonate into the Nafion membrane

In this paper, 1,2,4-triazolium methanesulfonate(C2H4N+3CH3SO-3, [Tri][MS]), an ionic conductor, was successfully synthesized. It exhibited high ionic conductivity of 18.60 m S cm-1at 140CdSC and reached up to 36.51 m S cm-1at 190CdSC. [Tri][MS] was first applied to modify Nafion membrane to fabricate [Tri][MS]/Nafion membrane by impregnation method at 150CdSC. The prepared composite membrane showed high thermal stab...  (本文共8页) 阅读全文>>