咪唑类离子液体用作电解质对燃料电池性能的影响  

Effect of imidazolium-based ionic liquids as electrolytes on the performance of fuel cell

作　　者：王远洋[1] 闫瑞锋[1] 

机构地区：[1]太原科技大学化学与生物工程学院,山西太原030021

出　　处：《燃料化学学报》2013年第12期1520-1524,共5页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(U1332107);山西省科技基础条件平台建设项目(2012091019);校科研启动基金(20112004)

摘　　要：为优化改善燃料电池的整体性能,在自由电解质燃料电池中,考察了五种咪唑类离子液体用作燃料电池电解质时对燃料电池性能的影响。结果表明,以氢气为燃料时,在相同电流密度下,电路电压和输出功率从高到低依次为1-丁基-3-甲基咪唑四氟硼酸盐>1-丁基-3-甲基咪唑六氟磷酸盐>氢氧化钠溶液>>氯化-1-丁基-3-甲基咪唑>溴化-1-丁基-3-甲基咪唑>1-丁基-3-甲基咪唑硫酸氢盐;以甲烷为燃料时,相同电流密度下,电路电压和输出功率从高到低则依次为溴化-1-丁基-3-甲基咪唑>1-丁基-3-甲基咪唑硫酸氢盐>氯化-1-丁基-3-甲基咪唑>氢氧化钠溶液>1-丁基-3-甲基咪唑四氟硼酸盐>1-丁基-3-甲基咪唑六氟磷酸盐。以[Bmim]BF4为氢气燃料电池电解质时,温度升高和离子液体中水含量增加,均会使燃料电池的性能减弱。Five imidazolium-based ionic liquids were used as the electrolytes and their effects on the performance of fuel cell were investigated in a free electrolyte fuel cell. The results indicated that with H2 as fuel,the cell potential and the power density at the same current density decrease following the sequence of [Bmim]BF4 [Bmim]PF6 NaOH [Bmim]Cl [Bmim]Br [Bmim]HSO4; on the contrary, when methane is used as fuel,the cell potential and the power density decrease following the sequence of [Bmim]Br [Bmim]HSO4 [Bmim]Cl NaOH [Bmim]BF4 [Bmim]PF6. When [BMIm]BF4 is used as the electrolyte of H2 fuel cell,both of the cell potential and the power density decrease with the increase of temperature and water content in the ionic liquid.

关 键 词：燃料电池 离子液体电解质 电池性能测试 

分 类 号：TM911.4[电气工程—电力电子与电力传动]