PEMFC氢泵方法低温启动
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摘要
利用氢泵方法对质子交换膜燃料电池(PEMFC)在0℃以下进行低温启动实验,实现燃料电池短堆在-30℃低温启动。通过获得的极化曲线或时间温度曲线分析环境温度对于氢泵启动的影响和氢泵强度对于电池启动速度的影响,比较电池在20次启动前后性能的变化。数据表明:不同启动电流密度与低温启动的速度成正比;适宜空气量计量比利于快速启动;氢泵方法低温启动后电池的性能有所提升。
Using the method of hydrogen pump, proton exchange membrane fuel cell(PEMFC) start-up at 0 ℃ was studied. Through the I-V curve and time & temperature curve, the influence of environmental temperature on hydrogen pump start-up was investigated, the influence of different hydrogen pump intensity on fuel cell start-up speed, and the fuel cell performance before and after 20 times of hydrogen pump assisted start-up were investigated. The success of -30 ℃ fuel cell start-up was achieved. Higher hydrogen pump intensity, the faster the speed of the fuel cell starts. Optimum air flow rate is helpful for subzero start-up. Fuel cell with hydrogen pump method assisted cold start shows no performance decrease.
Using the method of hydrogen pump, proton exchange membrane fuel cell(PEMFC) start-up at 0 ℃ was studied. Through the I-V curve and time & temperature curve, the influence of environmental temperature on hydrogen pump start-up was investigated, the influence of different hydrogen pump intensity on fuel cell start-up speed, and the fuel cell performance before and after 20 times of hydrogen pump assisted start-up were investigated. The success of -30 ℃ fuel cell start-up was achieved. Higher hydrogen pump intensity, the faster the speed of the fuel cell starts. Optimum air flow rate is helpful for subzero start-up. Fuel cell with hydrogen pump method assisted cold start shows no performance decrease.
引文
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[2]GWAK G,KO J,JU H.Numerical investigation of cold-start behavior of polymer-electrolyte fuel-cells from subzero to normal operating temperatures-Effects of cell boundary and operating conditions[J].International Journal of Hydrogen Energy,2014,39(36):21927-21937.
[3]WANG Y,MUKHERJEE P,MISHLER J,et al.Cold start of polymer electrolyte fuel cells:Three-stage startup characterization[J].Electrochimica Acta,2010,55:2636-2644.
[4]赖平华,张苹,朱俊娥,等.一种低温冷启动燃料电池系统及利用方法:CN105390715A[P].2016-03-09.
[5]黄海灵,崔馨予,林瑞,等.一种燃料电池冷启动加热装置:2014-20163582.0[P].2014-12-10.
[6]乌尔里克.格布哈特,里特马.冯赫默尔特,冈特.卢夫特,等.冷起动性能得以改进的燃料电池组和用于冷起动一个燃料电池组的方法:CN1343379A[P].2002-04-03.
[7]袁庆,郑俊生,马建新.基于氢气低温催化燃烧的燃料电池低温启动研究进展[J].化工进展,2013,32(6):1439-1447.
[8]俞红梅,王洪卫,孙树成,等.一种燃料电池低温启动的方法及装置:CN101170187A[P].2006-10-27.
[9]WANG H W,HOU J B,YU H M,et al.Effects of reverse and subzero startup on the membrane electrode assembly of a PEMFC[J].Journal of Power Sources,2007,165(1):287-292.
[10]孙树成,俞红梅,侯俊波,等.PEMFC在0℃以下的环境启动的研究[J].电源技术,2007,31(8):626-629.