摘要在当前经济高速发展的背景下，能源的利用方式和环境的污染问题已成为全世界关注的焦点，开发和利用新型能源技术成为未来研究发展的必然趋势，而固体氧化物燃料电池（SOFC）以其高效、清洁、可再生等诸多优点，被公认为解决传统能源的弊端最为有效的技术之一。这其中就包括微管式SOFC，因为微管式SOFC结构上的特殊性，其管径尺寸较普通管式燃料电池大幅缩小，而带来的普通管式电池和平板式电池所没有的优势，比如力学性能更好、单位体积的功率密度更高、热应力显著减小。但是，要想使微管SOFC被广泛应用，还需要突破许多技术难题，其中既包括电池结构上的设计优化，又包括机械性能、电化学性能方面的优化设计。84616

本文主要研究电极组分对微管SOFC残余应力的影响，主要包括如下几个部分内容：

第一章对燃料电池的基础知识， SOFC的原理，微管SOFC的优势及发展前景，国内外对管式SOFC的研究进展几个方面进行了介绍，提出了研究微管SOFC的必要性。

第二章介绍了应力张量与应变张量间的函数关系、材料的力学性质计算方法、损伤几率分析方法、模型的建立方法。

第三章采用第二章建立的模型，分析了电极组分对微管SOFC残余应力和损伤几率的影响。增大阳极中Ni的体积分数，微管SOFC三层结构中的残余应力都随之增大。此外，阴极中LSM的体积分数变化对于微管SOFC三层结构的影响都很小，可以忽略。随着阳极中Ni体积分数的增大，阳极、电解质、阴极的损伤几率都增大，但因为电解质和阴极损伤几率在整个变化中的最大值仍小于10-6，影响可以忽略不计

第四章主要分析了阳极、阴极、电解质三者之间厚度的关联性，总结出了复合阳极材料中Ni体积分数变化时各自对应的“最小阳极厚度”计算公式，为微管SOFC的结构设计提供了理论指导。

结论部分对全文进行了总结。

毕业论文关键词：微管SOFC；电极组分；残余应力；损伤几率；最小阳极厚度

Abstract Under the background of the current rapid economic development, energy use and environmental pollution has become the focus of attention all over the world, the development and utilization of new energy technologies become the future trend of research and development, and solid oxide fuel cell (SOFC), with its high efficient, clean, renewable, and many other advantages, is recognized as one of the most effective technology to solve the disadvantages of traditional energy sources。Including tubular SOFC, because of the particularity of the micro structure of tubular SOFC, the diameter size is relatively common tube type fuel cell significantly narrowed, and the normal tubular battery plate type batteries do not peace, such as mechanical performance better, higher power density per unit volume and heat stress significantly decreased。But to make microtubule SOFC are widely used, also need to break through the many technical problems, which included not only the battery structure design optimization, and includes the optimization of mechanical properties, electrochemical performance。

This paper mainly studies of microtubules SOFC electrodes component the influence of residual stress, the content mainly includes the following several parts:

The basic knowledge of the first chapter of the fuel cell, the principle of SOFC, the advantage and development prospect of microtubules SOFC, both at home and abroad for tubular SOFC are introduced, the research progress of several aspects put forward the necessity of SOFC research microtubules。

The second chapter of the stress tensor and the function relation between the strain tensor, material calculation method of the mechanical properties and damage probability analysis method, the establishment of the model。