Model prediction of effects of operating parameters on proton exchange membrane fuel cell performance
Model prediction of effects of operating parameters on proton exchange membrane fuel cell performance
复制标题
运行参数对质子交换膜燃料电池性能影响的模型预测
DOI：
10.1016/j.renene.2009.08.017
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发表时间：
2010-03
期刊：
影响因子：
8.7
通讯作者：
Tang, Biao
中科院分区：
文献类型：
--
作者：
Yuan, Wei;Pan, Minqiang;Li, Zongtao;Tang, Yong;Tang, Biao
质子交换膜（PEM）燃料电池的性能受操作参数的影响很大。适当的操作参数对于PEM燃料电池保持稳定的性能是必要的。开发了一个三维多相燃料电池模型（FCM），以预测运行参数（如操作压力，燃料电池温度，反应气体的相对湿度，空气化学计量比）对PEM燃料电池性能的影响。本文提出的模型是一个典型的九层FCM，包括集流体，流道，气体扩散层，催化剂层的阳极和阴极以及膜。利用计算流体力学（CFD）软件Fluent，采用SIMPLE算法对该预测模型进行求解，并通过极化曲线（包括I-V曲线和I-P曲线）对建模结果进行了说明。结果表明，提高操作压力和操作温度可以提高电池性能。阳极增湿对电池性能的影响比阴极增湿更为显著，在氢气充分增湿的情况下，空气相对湿度适中时电池性能最佳。此外，随着空气化学计量比的增加，电池性能得到改善。在此基础上，对工程实践提出了几点建议.
The performance of a proton exchange membrane (PEM) fuel cell is greatly affected by the operating parameters. Appropriate operating parameters are necessary for PEM fuel cells to maintain stable performance. A three-dimensional multi-phase fuel cell model (FCM) is developed to predict the effects of operating parameters (e.g. operating pressure, fuel cell temperature, relative humidity of reactant gases, and air stoichiometric ratio) on the performance of PEM fuel cells. The model presented in this paper is a typical nine-layer FCM that consists of current collectors, flow channels, gas diffusion layers, catalysts layers at the anode and the cathode as well as the membrane. A commercial Computational Fluid Dynamics (CFD) software package Fluent is used to solve this predictive model through SIMPLE algorithm and the modeling results are illustrated via polarization curves including I–V and I–P curves. The results indicate that the cell performance can be enhanced by increasing operating pressure and operating temperature. The anode humidification has more significant influences on the cell performance than the cathode humidification, and the best performance occurs at moderate air relative humidity while the hydrogen is fully humidified. In addition, the cell performance proves to be improved with the increase of air stoichiometric ratio. Based on these conclusions, several suggestions for engineering practice are also provided.
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影响因子：
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作者：
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通讯作者：
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作者：
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