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Synergic effect of ionic liquid grafted titanate nanotubes on the performance of anion exchange membrane fuel cell
Journal of Power Sources ( IF 8.1 ) Pub Date : 2018-12-06 , DOI: 10.1016/j.jpowsour.2018.11.096
Vijayakumar Elumalai , Dharmalingam Sangeetha

Titanate nano tubes, prepared by hydrothermal method, are covalently bonded with a basic ionic liquid (1-Methyl-3-(3-trimethoxysilylpropyl) imidazolium chloride) resulting in an ion exchange behaviour. The ionic liquid bonded Titanate nano tubes are characterised by SEM, TEM, XRD studies for their nano tube morphology and covalent bond between them which are confirmed by solid state NMR and FTIR. This synthesised filler, in various concentrations (1, 3, 5 and 7 wt%), are incorporated into quaternised polysulfone leading to the fabrication of nano composite membranes with high ion exchange capacity. The fabricated nano composite membranes are characterised by SEM, XRD, water uptake, ion exchange capacity and hydroxyl conductivity studies to evaluate their suitability as an electrolyte in alkaline fuel cell applications. Upon testing these membranes in fuel cell setup with platinum anode and silver cathode, amongst the various composites, the membrane with 5% wt filler exhibits the most optimum properties for application in alkaline fuel cells with a power density of 302 mW/cm2. The existence of ion exchange behaviour as well as the hollow nature of titanate nano tubes leads to synergistic effect in conducting the hydroxyl ions via both Grotthus (through water molecules) and hopping (through ion exchange groups) mechanisms.



中文翻译:

离子液体接枝钛酸酯纳米管对阴离子交换膜燃料电池性能的协同作用

通过水热法制备的钛酸酯纳米管与碱性离子液体(1-甲基-3-(3-三甲氧基甲硅烷基丙基)咪唑鎓氯化物)共价键合,产生离子交换行为。离子液体键合的钛酸酯纳米管通过SEM,TEM,XRD研究对其纳米管的形貌和它们之间的共价键进行了表征,并通过固态NMR和FTIR进行了证实。将该合成的填料以各种浓度(1、3、5和7 wt%)掺入季铵化聚砜中,从而制备出具有高离子交换容量的纳米复合膜。通过SEM,XRD,吸水率,离子交换容量和羟基电导率研究对制备的纳米复合膜进行表征,以评估其在碱性燃料电池应用中作为电解质的适用性。2。离子交换行为的存在以及钛酸酯纳米管的中空性质导致在通过Grotthus(通过水分子)和跳跃(通过离子交换基团)机制传导羟基离子方面产生协同效应。

更新日期:2018-12-06
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