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PEM燃料电池阴极中的液态水及其影响因素 被引量:2

LIQUID WATER IN PEM FUEL CELL CATHODE AND ITS INFLUENCING FACTORS
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摘要 阴极多孔介质中液态水的含量对PEM燃料电池阴极中的传质及其性能具有极其重要的影响。提出了一个二维、两相、稳态数学模型,研究PEM燃料电池阴极中两相水的传递及其对电池性能的影响。模型耦合了连续方程、动量方程和组分守恒方程,并将质子膜中的净水迁移通量作为边界条件之一来处理。通过实验的方法和数值模拟的方法,研究了电池操作压力和温度对电池性能的影响,同时验证了模型的有效性。模拟发现:提高操作压力和升高阴极加湿温度使电池阴极催化剂层(CTL)和扩散层(GDL)界面上的液态水含量大幅提高;升高阳极加湿温度,电池阴极CTL和GDL界面上的液态水含量变化不明显;而升高燃料电池的操作温度,阴极CTL和GDL界面上液态水的含量降低。 Liquid water saturation in the cathode porous electrode plays an important role in PEM fuel cell performance and mass transport. In this paper, a steady-state two-dimensional, two-phase flow mathematical model for PEM fuel cell is presented. The model couples continuity equation, momentum equation and species conservation equations. Net water transport flux in the membrane is considered as a boundary condition. The effect of fuel cell temperature and pressure on its performance is investigated by experiment...
出处 《化工学报》 EI CAS CSCD 北大核心 2004年第S1期215-219,共5页 CIESC Journal
基金 国家杰出青年科学基金海外学者合作项目(No.50228606) 国家重点基础研究发展规划项目(No.2003CB214500)
关键词 质子交换膜(PEM) 燃料电池(FC) 水迁移 数学模型 proton exchange membrane(PEM) fuel cell(FC) water transport mathematical model
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同被引文献13

  • 1孙红,吴玉厚,刘洪潭.PEM燃料电池内液态水和温度分布特性[J].工程热物理学报,2007,28(z1):233-236. 被引量:2
  • 2孙红,郭烈锦,刘洪潭,张广升.操作参数对PEM燃料电池中水迁移的影响[J].工程热物理学报,2005,26(2):257-260. 被引量:5
  • 3李湘华,肖金生,潘牧,袁润章.质子交换膜燃料电池的结构和运行参数对其性能的影响[J].武汉理工大学学报(交通科学与工程版),2006,30(6):1027-1030. 被引量:5
  • 4Chen F, Wen Y, Chu H, et al. Convenient two-dimensional model for design of fuel channels for proton exchange membrane fuel cells [J].Journal of Power Sources, 2004, 128 (1): 125-134.
  • 5Jeng K T, Kuo C P, Lee S F. Modeling the catalyst layer of a PEM fuel cell cathode using a dimensionless approach[J].Journal of Power Sources, 2004, 128(1): 145-151.
  • 6Zhan Z G, Xiao J S, Pan M ,et,al. Characteristics of droplet and film water motionin the flow channels of polymer electrolyte membrane fuel cells[J].Journal of Power Sources, 2006, 160(1): 1-9.
  • 7Zhan Z G, Xiao J S, Li D Y, et al. Effects of porosity distribution variation on the liquid water flux through gas diffusion layers of PEM fuel cells[J].Journal of Power Sources, 2006, 160(2): 1 041- 1 048.
  • 8Wang Z H, Wang C Y, Chen K S. Two-Phase Flow and Transport in the Air Cathode of Proton Exchange Membrane Fuel Cells. J Power Sources, 2001, 94(1): 40-50
  • 9You L, Liu H. A Two-Phase Flow and Transport Model For the Cathode of PEM Fuel Cells. Int J Heat Mass Transfer, 2002, 45(11): 2277-2287
  • 10He W, Jung S Y, Nguyen T V. Two-Phase Flow Model of The Cathode of PEM Fuel Cell Using Interdigitated Flow Fields. AIChE J. 2000, 46(10): 2053-2064

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