H_(2)-CO燃料气对SOFC性能影响研究  

Study on performance of SOFC using H_(2)-CO as fuel gas

作　　者：魏炜[1] 张宇[1] 董超[1] 刘凤霞[1] 刘志军[1] WEI Wei;ZHANG Yu;DONG Chao;LIU Fengxia;LIU Zhijun(Research Institute of Fluid and Powder Engineering,Dalian University of Technology,Dalian Liaoning 116024,China)

机构地区：[1]大连理工大学流体与粉体工程研究设计所,辽宁大连116024

出　　处：《电源技术》2021年第12期1589-1593,共5页Chinese Journal of Power Sources

基　　金：国家自然科学基金(21676049)。

摘　　要：固体氧化物燃料电池(SOFC)是一种能量转换装置,使用碳氢燃料,具有很大的发展潜力。为了探究H_(2)-CO燃料气与电极温度、进出口组分、电流密度、功率密度和超电势之间的关系,以期对SOFC的设计和运行提供帮助,建立了三维模型,并通过实验验证了模型的有效性。随燃料流量的增加,电极温度、功率密度、阴极浓差超电势先增大后减小,进出口组分改变量、燃料利用率、阳极浓差超电势减小,电流密度、活化超电势和欧姆超电势增加。H_(2)占比越大,电池性能越好。Solid oxide fuel cell(SOFC)is a kind of energy conversion device.It has great development potential to use hydrocarbon fuel.In order to explore the relationship between H_(2)-CO fuel gas and electrode temperature,inlet and outlet components,current density,power density and overpotential,so that it could provide help for the design and operation of SOFC,a three-dimensional model was established,and the effectiveness of the model was verified by experiments.With the increase of fuel flow rate,the electrode temperature,the power density,the cathode concentration overpotential increase first and then decrease,the modified variables of import and export components,the fuel utilization rate and the anode concentration overpotential decrease,current density of electrolyte layer,the activation overpotential and the ohmic overpotential increase.The larger the hydrogen content,the better the performance of battery.

关 键 词：固体氧化物燃料电池 数值模拟 合成气 电流密度 

分 类 号：TM911.4[电气工程—电力电子与电力传动]