| 异型DEFC管状阴极传质过程的模拟研究 |
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| 引用本文： | 汤东,沈凌飞,赵文帅,倪红军.异型DEFC管状阴极传质过程的模拟研究[J].南通工学院学报(自然科学版),2013(4):11-15. |
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| 作者姓名： | 汤东 沈凌飞 赵文帅 倪红军 |
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| 作者单位： | [1]江苏大学汽车学院,江苏镇江212013 [2]南通大学机械工程学院,江苏南通226019 |
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| 基金项目： | 江苏高校优势学科建设工程资助项目;江苏省国际合作项目（BZ2012025）;江苏2010年企业博士集聚计划 |
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| 摘 要： | 以中间相碳微球（MCMB）、石墨粉为原料用凝胶注模成型工艺制成阴极管烧结体，并在烧结体外涂覆扩散层、Pt／C催化层和Nation膜制备管状阴极．利用CFD软件对直接乙醇燃料电池（DEFC）管状阴极的传质过程进行模拟计算和研究，在不同的工作温度、阴极扩散层孔隙率、进气压力以及阴极催化层厚度的条件下，分析DEFC阴极催化层表面的液态饱和度、氧气的摩尔质量分数的变化情况．结果表明：增大阴极扩散层孔隙率、进气压力、催化层厚度和电池温度有利于阴极的传质过程．
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| 关 键 词： | 直接乙醇燃料 管状阴极 催化层 传质 |
Simulation Study on Transfer Mass of Tube Cathode Special-Shape Direct Ethanol Fuel Cell |
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| Authors: | TANG Dong SHEN Ling-fei ZHAO Wen-shuai NI Hong-jun |
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| Institution: | 1 School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China; 2. School of Mechanical Engineering, Nantong University, Nantong 226019, China) |
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| Abstract: | By gelcasting process which get the production of Mesophase carbon microspheres and graphite powder-- based sintered body of cathode tube, a tubular cathode was prepared by subsequently coating the gas diffusion layer, Pt/C catalyst layer and Nation membrane on the outside of the sintered body. The processes of mass transfer in DEFC were simulated using CFD software. In this paper, the liquid saturation and the mole percent of oxygen saturation of catalyst layers surface under different operating temperature, different porosity of cathode diffusion layer, different inlet pressure and different thickness of catalyst layer, were analyzed. The results shows that the increase of porosity in cathode diffusion layer, inlet pressure, thickness of catalyst layer and operating temperature are good for the transfer mass of tube cathode. |
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| Keywords: | direct ethanol fuel cell tube cathode catalytic layer mass transfer |
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