流场结构对微型直接甲醇燃料电池(μDMFC)的性能有着重要的影响,尤其表现在影响燃料供应和温度分布上.本文运用计算流体动力学(CFD)的方法,分析和比较了双蛇形和平行流场结构中流速、温度等分布情况.模拟结果表明双蛇形流场结构比平行流场结构显示出更优的流速分布和更均匀的温度分布.采用微机电系统(MEMS)技术,在N型单晶硅片上制作出流场结构,并组装成电池进行测试.实验结果表明:当温度为25℃,进口流速为0.01 m s-1时,由双蛇形流场结构制作的单电池功率密度达到了34.2 mWcm-2.
参考文献
| [1] | EG&G Technical Services,Inc.Fuel Cell Handbook,seventh ed[M].U.S.Department of Energy,West Virginia:Department of Energy,2004 |
| [2] | C.K.Dyer .Fuel cells for portable applications[J].Journal of Power Sources,2002,106:31-34. |
| [3] | 衣宝廉.燃料电池-原理技术应用[M].北京:化学工业出版社,2003 |
| [4] | Wenpeng Liu;ChaoYang Wang .Modeling water transport in liquid feed direct methanol fuel cells[J].Journal of Power Sources,2007(1):189-195. |
| [5] | Guo-Bin Jung;Ay Su;Cheng-Hsin Tu;Yur-Tsai Lin;Fang-Bor Weng;Shih-Himg Chan .Effects of cathode flow fields on direct methanol fuel cell-simulation study[J].Journal of Power Sources,2007(1):212-217. |
| [6] | Jianyu Cao;Zhiqing Zou;Qinghong Huang;Ting Yuan;Zhilin Li;Baojia Xia;Hui Yang .Planar Air-breathing Micro-direct Methanol Fuel Cell Stacks Based On Micro-electronic-mechanical-system Technology[J].Journal of Power Sources,2008(1):433-438. |
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