Conjugate Analysis of Heat-Species-Charge Transport for Evaluating Effects of the Temperature Gradient on Cell Performance Modeling
Conjugate Analysis of Heat-Species-Charge Transport for Evaluating Effects of the Temperature Gradient on Cell Performance Modeling
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用于评估温度梯度对电池性能建模影响的热-物质-电荷传输的共轭分析
DOI：
10.1149/06917.0093ecst
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Kiyofumi Miyagawa and Takuto Araki
中科院分区：
文献类型：
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作者：
Hiromitsu Ando;Yasuyuki Sakai;Kazunari Kuwahara;Kiyofumi Miyagawa and Takuto Araki
了解质子交换膜全电池（PEMFC）中的水传输现象对于评价电池性能具有重要意义。然而，温度、电化学反应、液态水、活性物质和热传输是相互影响的。因此，共轭分析考虑所有的自发是必要的。特别是温度梯度对水分运移有显著影响。在此基础上，建立了考虑温度、组分和反应分布的二维非稳态模型，研究了温度梯度对质子交换膜燃料电池水输运和电池性能的影响。结果表明，温度梯度引起了热管现象，可以减少CL中的液泛现象。然后，考虑温度梯度是必不可少的，因为它强烈影响水的传输和电池性能，并且温度梯度是必要的。
Understanding the water transport phenomena in the Proton Exchange Membrane Full Cell (PEMFC) is very important to estimate the cell performance. However, temperature, electrochemical reaction and liquid water, active materials and heat transports have been interacted each other. So, the conjugate analysis considering all of them spontaneously is required. In particular, the temperature gradient has the significant influence on water transport. Then, the two-dimensional unsteady model considering distributions of temperature, spices and reaction in components of the PEMFC was developed to investigate how the temperature gradient effects on the water transport and the cell performance. The result indicated that the temperature gradient invoke heat pipe phenomena, and it could reduce flooding in the CL. Then, considering the temperature gradient is essential, since it strongly impacted the water transport and the cell performance, and the temperature gradient was necessary.