CH_4-O_2固体氧化物燃料电池化学反应研究

研究了以甲烷为燃料气体、空气为氧化气体的固体氧化物燃料电池中的主要化学反应。同时研究了固体氧化物燃料电池电极结构、三相界面（电解质／电极／气体）结构和运行环境以及它们对电池主要化学反应的影响。并通过研究Ｐｔ｜ＹＳＺ｜Ａｇ固体氧化物燃料电池的开路电压与甲烷流量的关系，探讨燃料电池中的主要化学反应过程对电池性能的影响。研究表明，增加电极的孔隙率，可以增加三相界面的面积，从而增加有效反应区域，有利于电池反应。提高运行温度和阴极室氧的浓度，可以提高甲烷的利用率和电池的性能。

Study on chemical reaction in SOFC with CH_4O_2

Major chemical reactions in SOFC with CH 4 as the fuel and O 2 as the oxidizing gas were studied.The structure of electrodes and the three phase interface(electrolyte/electrode/gas),the operation environment and their effects on chemical reaction were also researched.In addition,the effects of chemical reactions on properties of SOFC were investigated by examining the relevance between the open circuit voltage and the flow of CH 4.The results show that more electrode porosity can increase the area of three phase interface so that the effective reaction region is enlarged and improve the reaction of battery.The properties of battery and availability of CH 4 can be improved by increasing the operating temperature and the oxygen concentration in cathode room.