The influence of steam on the internal reforming reaction in solid oxide fuel cells is under debate based on previously reported results. Therefore, appropriate kinetic models that accurately describe the methane reforming behaviour in solid oxide fuel cells under various operating conditions are required. The objective of this study is to find the appropriate kinetic model to describe the effect of current density on steam adsorption behaviour. The Langmuir-Hinshelwood model considers the associative methane adsorption and the dissociative steam adsorption. The formation of catalyst-hydroxide complexes is directly influenced by the steam concentration and current drawn via the non-faradaic electrochemical modification of the catalysis effect. The steam adsorption constant appeared to significantly drop when a current was produced. Of the current densities investigated, the models seemed to provide a more accurate description of reforming rates at a 600 A/m² current density relative to open-circuit and 1000 A/m² conditions. The models are used to predict the reaction rate in the fuel cell channel where the in-situ measurement is not practical.

基于先前报道的结果，蒸汽对固体氧化物燃料电池内部重整反应的影响正在争论中。因此，需要合适的动力学模型来准确描述固体氧化物燃料电池在各种操作条件下的甲烷重整行为。本研究的目的是找到合适的动力学模型来描述电流密度对蒸汽吸附行为的影响。Langmuir-Hinshelwood 模型考虑了缔合甲烷吸附和解离蒸汽吸附。催化剂-氢氧化物络合物的形成直接受蒸汽浓度和通过催化效应的非法拉第电化学修饰所汲取的电流的影响。当产生电流时，蒸汽吸附常数似乎显着下降。²相对于开路和 1000 A/m ²条件的电流密度。这些模型用于预测现场测量不可行的燃料电池通道中的反应速率。