Layered Fuel Cell Bipolar Plates Composite Core Surface

The patent applies composite materials by combining a core material (such as aluminum alloy) with surface materials (such as aluminum alloy, gold, or titanium) to create a fuel cell plate that achieves multiple desired properties. The core material provides structural strength and formability, while the surface materials provide high electrical conductivity, low contact resistance, corrosion resistance, and hydrophilicity. This composite structure resolves the contradiction by integrating multiple materials with complementary properties into a single functional component.

The patent applies local quality by having different materials at different locations within the fuel cell plate. The core material occupies the bulk interior providing mechanical properties, while the surface materials are applied only at the surfaces that contact other fuel cell components. This allows each region of the plate to have optimized properties for its specific function, achieving high electrical conductivity and corrosion resistance at the surfaces while maintaining structural integrity in the core.

The patent uses composite materials with a core material (such as aluminum alloy) that provides structural integrity and formability, combined with surface materials (such as aluminum alloy, gold, or titanium) that provide high electrical conductivity and corrosion resistance. The core material's mechanical properties are preserved while the surface materials are applied in thin layers that do not compromise the overall structural strength.

The patent applies local quality by concentrating the functional surface materials only where they are needed for electrical contact and corrosion protection, while the core material maintains structural integrity throughout the bulk of the component. This localized application ensures that structural properties are not compromised by the addition of surface materials.

The patent applies composite materials by integrating multiple materials with different compositions into a single fuel cell plate structure. The core material and surface materials are combined in a way that enhances electrical conductivity and corrosion resistance while maintaining a relatively simple overall manufacturing process.

The patent merges the core material and surface materials into a single integrated component rather than assembling separate parts. This combining of materials into a unified structure reduces manufacturing complexity compared to assembling multiple separate components, while still achieving the desired enhancement in conductivity and corrosion resistance through the multi-material construction.