Mathematical Sciences: Modeling and Analysis for Molten Carbonate Fuel Cells

数学科学：熔融碳酸盐燃料电池的建模和分析

• 批准号: 9501022
• 负责人: Joseph Fehribach
• 金额: $ 3万
• 依托单位: Worcester Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9501022&HistoricalAwards=false
• 关键词: Mathematical; Sciences; Modeling; Analysis; Molten

DMS-9501022 Fehrlbach Molten carbonate fuel cells are promising as clean and efficient sources of electricity---they have no moving parts, make no noise and produce no fumes. But the models used to describe them are deficient in certain aspects. The aim of this research is to develop and study improved mathematical models for electrochemical fuel cells, particularly molten carbonate fuel cells. The proposed work begins with the formulation of phenomenological models in terms of electrochemical potentials derived thermodynamically from the various reaction mechanisms on the microscale (the scale of the electrode pore structure). These microscale potential models will be analyzed numerically and analytically to determine what results can be achieved on this small scale. The equations will also be used to derive consistent models in terms of species concentration. Both types of models will be averaged to obtain macroscale models which can be fit to experimental data. A variety of averaging techniques will be considered in formulating three- phase homogenized models to obtain a broad prospective on the relationship between the microscale and the macroscale. An important part of the work will be addressing questions of interest to the fuel cell research community and comparing the models to experimental results.

熔融碳酸盐燃料电池有望成为清洁高效的电力来源——它们没有活动部件，没有噪音，也不会产生烟雾。但用于描述它们的模型在某些方面存在缺陷。本研究的目的是开发和研究电化学燃料电池，特别是熔融碳酸盐燃料电池的改进数学模型。提出的工作从从微观尺度（电极孔结构的尺度）上的各种反应机制的热力学衍生的电化学电位的现象学模型的制定开始。这些微尺度电位模型将进行数值分析和分析，以确定在这个小尺度上可以取得什么结果。这些方程还将用于推导物种浓度方面的一致模型。对两种模型进行平均，得到与实验数据拟合的宏观模型。在建立三相均质模型时，将考虑各种平均技术，以获得微观尺度和宏观尺度之间关系的广阔前景。这项工作的一个重要部分将是解决燃料电池研究界感兴趣的问题，并将模型与实验结果进行比较。