摘要
为了制备高性能大面积固体氧化物燃料电池(SOFC)单电池,解决由于面积过大而导致的单电池上气体分配不均匀及各部分温度差异,通过实验设计测试了单电池的各个区域的性能,包括局部电性能和局部温度。实验在1片10cm×10cm(有效反应面积9cm×9cm)的阳极支撑SOFC单电池上进行,电池的阴极以及空气气体分配板和集流器都被分成电绝缘的9个分块单元。每个分块单元的面积是2.8cm×2.8cm,均布置有独立的电流电压监测及温度监测系统。同时,利用计算流体力学模拟计算阴极侧的气体流场分布,并将计算的结果与实验测量结果进行了比较。模拟计算和实验测量的结果均显示大面积单电池存在局部的气体分布不均匀及其导致的性能不均匀,这为大面积SOFC电池的性能优化及电堆模块的设计提供依据。
In order to prepare for high performance large size anode-supported planar solid oxide fuel cell（SOFC） and avoid the gas distribution difference during the test,in this research single cell with dimension of 10cm×10cm（active reaction area of 9cm×9cm） was divided into 9 galvanically separated segments（each segment with dimension of 2.8cm×2.8cm） to measure the local performance and temperature.Each segment was measured independently about the current-voltage curve and the local temperature.For comparison,computational fluid dynamics（CFD） was used to simulate the gas distribution in the cathode side.Both the simulation and experimental results show an inhomogeneous distribution of gas during the test.This work is crucial to design large size SOFC single cell with optimization of the gas distribution layer.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2011年第5期951-954,共4页
Journal of Functional Materials
基金
国家高技术研究发展计划(863计划)资助项目(2007AA05Z133)
