The structure of connectors has an important impact on the flow uniformity

cell performance and lifetime enhancement in solid oxide fuel cells (SOFCs). In this paper

we constructed a three-dimensional multi-physical field coupling model for SOFC single cell

proposed the strategy of connectors staggered arrangement

and used the flow uniformity index and the residence time of the fuel inside the cell as the evaluation indexes to investigate the influence of the stacked layer structure on the performance of the cell. The results show that compared with the traditional single-layer structure

the flow uniformity index is improved by 5.4%

the pressure drop in the internal flow field is reduced by 38.1%

the residence time of the fuel in the cell is extended by 83.7% compared with the single-layer structure

the power density and the fuel utilization rate are improved by 5.4% and 16.3%

respectively

and hydrogen diffusion in the cell is uniform

which provides a useful guideline for the optimisation of the flow field structure and the design of the electric stack. It provides useful guidance for optimising the flow field structure and the design of the electric stack.