梯度磁场对被动式质子交换膜燃料电池性能的影响

doi:10.16085/j.issn.1000-6613.2019-0396

摘要/Abstract

摘要：

氧气和水是质子交换膜燃料电池（proton exchange membrane fuel cell，PEMFC）电化学反应中的主要成分，梯度磁场能够对二者的物理、化学性质产生影响。通过性能测试实验台，研究了阳极侧加载480mT梯度磁场后，被动式质子交换膜燃料电池（air-breathing proton exchange membrane fuel cell，AB-PEMFC）的性能变化。在此基础上，测试了不同电池温度和氢气流量下电池的性能变化。实验结果表明，在相同环境变量下，于阳极侧加载480mT梯度磁场能够提升AB-PEMFC的电效率。在不同电池温度下，加载480mT梯度磁场的电池效率更优；在不同的氢气流量下，阳极侧加载480mT梯度磁场，能为低流量时AB-PEMFC的电效率提供更明显的增益效果。因此，当AB-PEMFC在低温、低氢流量环境下工作时，在其阳极侧加载480mT梯度磁场能够更好地提升电池性能。实验结果可为AB-PEMFC的性能提升提供一定的参考价值。

关键词: 燃料电池, 电化学, 化学分析, 梯度磁场, 性能

Abstract:

Oxygen and water are the main reactant of the electrochemical reaction inside proton exchange membrane fuel cells (PEMFC), whose physical and chemical properties can be affected by gradient magnetic fields. In this study, the performance of an air-breathing proton exchange membrane fuel cell (AB-PEMFC) with its anode side loaded with a 480mT gradient magnetic field was analyzed under different cell temperatures and hydrogen flow rates. The experimental results show that the loading of the 480mT gradient magnetic field on the anode side can improve electrical efficiency of AB-PEMFC. The higher the cell temperature and the lower the hydrogen flow, the better the performance of the AB-PEMFC loaded with 480mT gradient magnetic field. The experimental results can provide a reference for improving the performance of AB-PEMFC.

Key words: fuel cells, electrochemistry, chemical analysis, gradient magnetic field, performance

中图分类号:

TM911

孙玄锴,吴懋亮,刘中俊,孙瀚霆. 梯度磁场对被动式质子交换膜燃料电池性能的影响[J]. 化工进展, 2020, 39(3): 924-929.

Xuankai SUN,Maoliang WU,Zhongjun LIU,Hanting SUN. Effect of gradient magnetic field on the performance of air breathing PEMFC[J]. Chemical Industry and Engineering Progress, 2020, 39(3): 924-929.

图/表 7

图1 测试系统示意图

图2 AB-PEMFC与梯度磁场加载方法

图3 梯度磁场对AB-PEMFC性能影响曲线

表1 最大功率密度下的AB-PEMFC内阻

梯度磁场强度

/mT

最大功率密度

/mW·cm^-2

电流密度

/mA·cm^-2

图4 长时间循环放电环境下电池的性能变化

图5 不同温度下梯度磁场对AB-PEMFC性能影响曲线

图6 不同氢气流量下梯度磁场对AB-PEMFC性能影响曲线

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