Multiphysics Simulation Of Solid Oxide Fuel Cell And Structure Optimation

Solid oxide fuel cell(SOFC),as a new type of energy technology,has a unique advantage in fuel cells,such as using solid electrolyte and flexible fuel.H2 can directly reorganize as SOFC usually works at 750—850℃,and it does not have to use expensive catalysts.However,it is time-consuming and expensive that relying on the experimen-tal method to improve the performance of SOFC,so to strengthen the numerical theory model technology to promote the practical process of SOFC has extraordinary signifi-cance and value.This paper focuses on the theoretical basis of SOFC numerical modeling technol-ogy,and systematically analyzes the relationship between the electrochemical perfor-mance of SOFC and the structure size,which mainly includes the following parts:The first chapter mainly introduces the development process and classification of fuel cell technology,then focuses on the working principle,configuration,material com-position,development status and application of SOFC.In the second chapter,the coupling method of SOFC multi-scale multi-physics modeling is systematically discussed from the point of view of theoretical modeling.In the third chapter,an effective two-dimensional multi-physics field model is es-tablished,which is compared with the experimental group and technical guidance.In the fourth chapter,the two-dimensional axisymmetric electrochemical model is established for the structural design of micro-tube SOFC(mt-SOFC).The sturcture parameters are optimized,the optimal structure and output power density are given at last.In the fifth chapter,the three parameters were systematically optimized,which based on chapter 4 and combined with production technology and the actualoperating conditions of SOFC.And finally compared with the power of the planner SOFC which shows the possibility of high current output of mt-SOFC.Chapter 6 gives a brief summary of this paper.