摘要
平板型固体氧化物燃料电池由于具有高效率、低污染物排放等特点,是未来发电的主要方向。当电池运行产生电流时,就会伴随电荷传输产生活化极化,伴随质量传输产生浓差极化,根据材料导电性的不同相应产生一定大小的欧姆极化,从而降低了燃料电池的开路电压,并对电流密度和输出功率产生影响。为了能使燃料电池更好地运行,就必须要了解对过电势产生影响的各种因素,所以建立了阳极支撑的平板状SOFC过电势模型,分析了电流密度、温度以及一些结构参数对三种过电势的影响,对阳极支撑型和电解质支撑型燃料电池的性能进行了比较。
Planar SOFC is a promising power device because of its high efficiency and low pollution. There was activating polarization with charge transfer, concentration polarization with mass transfer and ohm polarization for the reason of electric current. To run SOFC effectively, it is necessary to understand how each polarization is influenced. The emphasis was on overpotential mathematical model for anode-supported planar SOFC. The numerical results show the behaviors of three polarizations at certain parameters （current density, temperature, and et al.） are varied. Numerical simulation is also used to compare the performance between anode-supported SOFC and electrolyte-supported SOFC.
出处
《电源技术》
CAS
CSCD
北大核心
2008年第1期52-55,共4页
Chinese Journal of Power Sources
基金
郑州大学“十五”“211工程”重点建设学科:能源科学与技术(无编号)
关键词
固体氧化物燃料电池
过电势
阳极支撑
solid oxide fuel cell （SOFC）
overpotential
anode-supported
