本项目旨在对以低水碳比甲烷为燃料的固体氧化物燃料电池（SOFC）开展多物理场耦合理论模拟，并以此进行高功率输出、高能量转换效率和抗积碳的阳极材料与结构设计和SOFC工况参数优化。主要研究内容包括：1）依据电化学势平衡原理，建立适用于任意水碳比甲烷燃料的SOFC多场耦合物理理论模型；2）基于实验观察结果，开展多物理场数值模拟与理论分析，发展对不同水碳比通用的甲烷水汽重整反应速率理论模型；3）模拟分析工作电流对各种物理量如温度、气体组分、离子电流分布等的影响，理解电流抑制积碳的机理，建立积碳动力学模型与判据；4）考察阳极材料与结构对积碳活性的定量影响，进而提出抗积碳的阳极设计方案；5）系统性地模拟分析甲烷燃料的水碳比、重整度、流速和工作温度等工况参数对电池性能的影响，进而给出优化的具有高功率输出和高能量转化效率的工况参数。

This research project aims to develop a comprehensive multi-physics theoretical and numerical modeling method for solid oxide fuel cells (SOFCs) fueled with slightly humidified methane. The numerical model will be used for the design and optimization of the anode material and structure and cell operating parameters in order to obtain high power density, high energy efficiency and carbon deposition free SOFCs. The main research activities include: 1) Based on the principle of the electrochemical potential balance to develop a multi-physics theoretical model for SOFCs fueled by methane with any steam content. 2) Performing theoretical and numerical simulation analysis for the experimental observations to arrive at a unified reaction rate model of the methane steam reforming reaction with arbitrary steam content. 3) Numerical simulations of the effect of operating current on the distributions of physical quantities such as temperature, fuel compositions, ionic current, et al, for understanding the mechanism of carbon removal by the operating current. The results will be used to develop a kinetic carbon deposition model and to find a quantitative carbon removal criterion. 4) Numerical simulation for the quantitative understanding of the effects of anode material and structures on the carbon deposition activity and the material and structural designs for the carbon deposition resistant anodes. 5) Systematic simulation analysis for the effects of steam content, reformation rate, flow rate and working temperature on the cell performance in order to find the optimized operating parameters for high power output and high energy efficiency operations.