气态进料直接甲醇燃料电池的二维数值模拟

doi:10.7523/j.issn.2095-6134.2017.02.019

中国科学院大学学报 ›› 2017, Vol. 34 ›› Issue (2): 244-250.DOI: 10.7523/j.issn.2095-6134.2017.02.019

气态进料直接甲醇燃料电池的二维数值模拟

谢旭, 邓豪, 焦魁

天津大学内燃机国家重点实验室, 天津 300072

收稿日期:2016-04-19 修回日期:2016-07-31 发布日期:2017-03-15
通讯作者: 焦魁,E-mail:kjiao@tju.edu.cn
基金资助:
国家自然科学基金面上项目（51276121）资助

Numerical simulation of vapor-feed direct methanol fuel cell

XIE Xu, DENG Hao, JIAO Kui

State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China

Received:2016-04-19 Revised:2016-07-31 Published:2017-03-15

摘要/Abstract

摘要： 基于多相流理论，建立被动式气态甲醇进料碱性阴离子交换膜直接甲醇燃料电池的二维两相非等温模型，研究电池内部的质量传输和电化学现象。在模型中，液态甲醇蒸发形成蒸汽，通过由Nafion膜与疏水的多孔介质复合而成的材料进入电池。模型考虑气体传输层（VTL）和微孔层（MPL），在VTL的两侧对称地开两个微孔，便于CO₂的外排。讨论不同CO₂开口大小对电池性能的影响和MPL的疏水性对电池内部水分布以及性能的影响。

关键词: CO₂开口, 阴离子交换膜, 被动式, 疏水性

Abstract: A two-dimensional, two-phase, and non-isothermal model is developed for a vapor-feed direct methanol fuel cell (DMFC) based on alkaline anion exchange membrane system by using the multi-fluid approach. The model will lead to better understanding of the mass-transfer and electrochemical phenomenon in the cell. In the model, the vapor generated from the liquid methanol in the tank goes through a composite material made of Nafion membrane and hydrophobic porous layer into the cell. In the study, the vapor transport layer (VTL) and micro porous layer (MPL) are taken into account, and two symmetrical exits in the VTL are set for the CO₂ removal. With this model, effects of the CO₂ exit length and the hydrophobic MPL on performance and inner water distribution of DMFC are investigated.

Key words: CO₂ exit, alkaline anion exchange membrane, passive, hydrophobicity

中图分类号:

谢旭, 邓豪, 焦魁. 气态进料直接甲醇燃料电池的二维数值模拟[J]. 中国科学院大学学报, 2017, 34(2): 244-250.

XIE Xu, DENG Hao, JIAO Kui. Numerical simulation of vapor-feed direct methanol fuel cell[J]. , 2017, 34(2): 244-250.

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气态进料直接甲醇燃料电池的二维数值模拟

Numerical simulation of vapor-feed direct methanol fuel cell

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