Solid oxide cell stack with differential pressure between anode and cathode compartments

Abstract

The SOC stack has an interconnect with a maximum distance between contact points, which is designed to compensate for a pressure difference between one side and the other side of the interconnect.

Description

technical field [0001] The present invention relates to a solid oxide cell (SOC) stack, in particular a solid oxide fuel cell (SOFC) cell or a solid oxide electrolysis cell (SOEC) cell, in particular for oxygen in the fuel compartment of the SOC cell and in the SOC cell An SOC stack with a pressure difference between the compartments, the cells are stacked on top of each other to form an SOC stack. Background technique [0002] The present invention proposes a design for a solid oxide cell (SOC) stack that is mechanically robust to operate in the presence of a pressure differential between the fuel and oxygen compartments of the stack. This is achieved by choosing the distance between the contact points / ribs on the low pressure side of the SOC such that the maximum tensile stress of the SOC due to the applied pressure difference between the two sides of the cell is significantly lower than the Weibull strength of the SOC. [0003] Solid oxide cells (SOCs) typically consist ...

AI Technical Summary

Problems solved by technology

Mechanical failure of a single SOC in the stack will often result in failure of the entire stack

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