Optimized Contacting Design for Solid Oxide Fuel Cells
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Summary
Problems
Solid oxide fuel cell and electrolyzer stacks face issues with thermal gradients, corrosion, and restricted gas flow due to manufacturing limitations, leading to reduced efficiency, shortened lifespan, and increased costs.
Innovation solutions
A contacting arrangement and method for solid oxide cells using perforated metal contact structures with oxide coatings, optimized for gas permeability, electric conductivity, and heat transfer, which include gasket structures to manage tolerance variations and enhance mechanical support, allowing for improved gas flow and reduced thermal gradients.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If conventional contacting arrangements are used in solid oxide cell stacks, then manufacturing is simpler, but thermal gradients increase and gas flow becomes restricted
Why choose this principle:
The contacting arrangement is segmented into multiple functional layers including flow field plates, gasket structures, and contact structures with perforated metal and oxide coatings. This segmentation allows each layer to perform its specific function optimally while collectively reducing thermal gradients and improving gas flow distribution across the cell stack.
Principle concept:
If conventional contacting arrangements are used in solid oxide cell stacks, then manufacturing is simpler, but thermal gradients increase and gas flow becomes restricted
Why choose this principle:
The contact structure uses composite materials consisting of perforated metal substrate with protective oxide coatings. This composite structure provides both mechanical support and controlled gas permeability while managing thermal properties, thereby reducing thermal gradients without excessive complexity.
Application Domain
Data Source
AI summary:
A contacting arrangement and method for solid oxide cells using perforated metal contact structures with oxide coatings, optimized for gas permeability, electric conductivity, and heat transfer, which include gasket structures to manage tolerance variations and enhance mechanical support, allowing for improved gas flow and reduced thermal gradients.
Abstract
A contacting arrangement of solid oxide cells is disclosed, each solid oxide cell having at least two flow field plates to arrange gas flows in the cell, and an active electrode structure, which has an anode side, a cathode side, and an electrolyte element between the anode side and the cathode side. The contacting arrangement includes a gasket structure to perform sealing functions in the solid oxide cell and a contact structure located between the flow field plates and the active electrode structure, the contact structure being at least partly a gas permeable structure configured and adapted according to structures of the flow field plates and according to the active electrode structure.