氢燃料电池中氢氧耦合过程研究

Research on hydrogen-oxygen coupling process in hydrogen fuel cell

以氢燃料电池低温启动过程模拟为依据,设计微反应器的氢氧催化反应,对氢空混气催化过程状态进行分析。氢燃料电池的低温启动问题体现在:在冰点以下环境中,电池内部的液态水发生冻结,造成启动缓慢甚至启动失败。文中提出了一种新的思路,通过气体流动过程分析反应情况,调节反应中氢空参数,考察上述参数对反应过程和反应效率的影响,用研究数据验证反应状态下的效应分析,对耦合效应中氢空混气状态进行实验验证,研究了低温下的热量供给规律,为耦合效应中氢空混气状态提供数据验证,为氢安全管理提供技术基础。

Based on the simulation of low-temperature start-up of hydrogen fuel cell,the hydrogen-oxygen catalytic reaction in microreactor was designed,and the state of hydrogen-air mixed gas catalytic process was analyzed.The low temperature start-up problem of hydrogen fuel cell is reflected in that when in the environment below freezing point,the liquid water inside the battery freezes,which results in slow start-up or even failure.A new way of thinking was put forward in this study.The gas flow process was used to analyze the reaction condition and adjust the hydrogen air parameters in the reaction.The effects of the above parameters on the reaction process and the reaction efficiency are investigated.The experimental data were used to verify the effect analysis in the reaction state,and the hydrogen-air mixing state in the coupling effect is verified by experiments.The heat supply law at low temperature was studied,which provided data verification for hydrogen-air mixing state in coupling effect and technical basis for hydrogen safety management.