固体氧化物直接碳燃料电池的模型计算

THE MODELING OF DIRECT CARBON FUEL CELLS WITH SOLID OXIDE ELECTROLYTES

直接碳燃料电池(DCFC)是直接以碳或煤为燃料的燃料电池。本文以一种以固体氧化物为电解质的固定床直接碳燃料电池为对象,基于文献中的实验数据,建立了物理模型和数学方程,求解出电池在三个特定温度下的Ⅴ-Ⅰ曲线以及能量转换效率,并与文献中的实验结果进行对照,验证了对固定床直接碳燃料电池的反应过程的假设,分析了电池性能的影响因素,为直接碳燃料电池的应用打下了理论基础。

Direct carbon fuel cells(DCFCs)are such devices that can turn the chemical energy that is stored in carbon directly into electricity.Because of their high efficiency and environment- friendly properties,more and more attentions have been paid to DCFCs.In this paper,emphases are put on DCFCs with solid oxide electrolytes.The modeling of DCFCs with solid oxide electrolytes are based on the experimental data of literature.Physical model is built and mathematic equations are proposed according to the experiment.By solving these equations,V-I curves and efficiencies at fixed temperatures are calculated,and are compared to the experimental results.The hypothetic process is verified by this way,and the influences of parameters are analyzed to give advice to further applications.