固体氧化物燃料电池电化学特性分析

对固体氧化物燃料电池的理想电势及有效电势进行理论分析,利用有关最新发表的活化超电势、欧姆超电势和传质超电势的计算公式,对有效电势和超电势进行了计算,探讨了工作温度和燃料中水蒸汽含量对有效电势的影响.研究发现,温度对SOFC有较大影响,在电流密度较高时,工作温度越高SOFC的有效电势就越高;燃料氢气中水蒸气的含量对SOFC的理想电势和超电势都有影响,共同作用下,SOFC燃料中较小的水蒸汽含量可获得较大的有效电势.

Analysis on the Electrochemical Performance of Solid Oxide Fuel Cell

This paper studies the electric potential of Solid Oxide Fuel Cell(SOFC).The activation over-potential,ohmic over-potential and concentration over-potential are solved by recently published equations.This paper also discusses the influence of operating temperature and steam to the SOFC's operating cell potential.Through the research,it is found that the temperature have great influence on SOFC's cell voltage.When the current density is high,the SOFC's cell voltage is higher with higher operating temperature.The steam ratio of the fuel have effects on SOFC's ideal electric potential and over-potentials.In summary,the less the steam ratio is,the greater the cell voltage we can achieve.