储能科学与技术2024，Vol.13Issue(5)：1710-1720,11.DOI:10.19799/j.cnki.2095-4239.2023.0855
不同支撑结构的固体氧化物燃料电池数值模拟分析
Numerical simulation analysis of solid oxide fuel cells with different support structures
摘要
Abstract
Solid oxide fuel cells(SOFCs)represent an efficient power generation system capable of directly converting chemical energy into electricity.However,ensuring the high efficiency and stable operation of SOFCs is a pressing issue.This study establishes a three-dimensional model for a single-piece planar SOFC,involving the coupling of various physical fields such as electrochemistry,mass transfer,and heat transfer.The model is subjected to numerical calculations and validation using the COMSOL Multiphysics finite element simulation software,with the I-V curve indicating a data error of less than 6%.Building on this model,a three-dimensional model of an SOFC based on cathode and electrolyte support is developed.This study further investigates the impact of different operational parameters and support structures on factors such as output power and temperature of SOFCs.The effects on the cell are reflected through polarization and power curves.The simulation results show that connecting rib plates can influence the diffusion of gases within the cell,revealing a close correlation between current density and material distribution.Further research indicates that factors such as support layer thickness,pressure,and input fuel flow rate can affect the cell's output power and temperature.Increasing the operational pressure and fuel input flow rate can enhance the output power;however,this also leads to an increase in the internal temperature of the cell,with the output power being inversely proportional to the thickness of the cell support layer.Under identical conditions,the output power of cathode-supported SOFCs is greater than that of electrolyte-supported SOFCs.Hence,this study provides some guidance regarding the structural design and experimental work related to SOFCs.关键词
固体氧化物燃料电池/电池性能/阴极支撑/数值模拟/电池温度Key words
solid oxide fuel cell/cell performance/cathode-supported/numerical simulation/cell temperature分类
信息技术与安全科学引用本文复制引用
刘鑫宇,张安安,廖长江..不同支撑结构的固体氧化物燃料电池数值模拟分析[J].储能科学与技术,2024,13(5):1710-1720,11.基金项目
四川省科技计划资助项目(2023YFQ0073),四川省科技计划资助项目(2021YFSY0051). （2023YFQ0073）
