Reinforced Membrane-Seal Assembly for Fuel Cells
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Solution Overview
Problem
Conventional fuel cell manufacturing processes are inefficient, leading to high costs and material wastage due to excessive use of polymeric ion-conducting membranes and seal materials, particularly in the non-electrochemically active regions of the membrane electrode assembly (MEA).
Innovation Solution
A process for manufacturing a reinforced membrane-seal assembly, where continuous strips of ion-conducting and seal components are formed on a temporary carrier, filling the pores of a planar reinforcing component, allowing for reduced material usage and simplified high-volume production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If continuous strips of ion-conducting and seal components are formed on a temporary carrier, then material usage is reduced and manufacturing is simplified, but the complexity of the manufacturing process increases
Solution Approach 1:
The membrane-seal assembly is segmented into discrete continuous strips of ion-conducting component and seal component formed separately on a temporary carrier. This segmentation allows precise material placement only where needed, reducing overall material usage while enabling automated manufacturing processes.
Solution Approach 2:
A temporary carrier component is introduced as an intermediary substrate to support the formation and handling of continuous strips during manufacturing. This intermediary enables simplified material deposition and subsequent transfer to the final assembly, reducing direct handling complexity while minimizing material waste through precise placement.
2Object-affected harmful factors
If seal component is confined to reactant porting regions, then contamination risks are minimized, but the sealing coverage area is reduced
Solution Approach 1:
The seal component is applied with local quality by confining it specifically to the reactant porting regions rather than providing uniform sealing coverage. This localized sealing approach minimizes contamination risks in critical areas while reducing unnecessary seal material in non-critical regions, optimizing both safety and material efficiency.
3Strength
If planar reinforcing component with pores is used, then mechanical strength is improved, but material cost increases
Solution Approach 1:
A planar reinforcing component with pores is used to provide mechanical strength to the membrane-seal assembly. The porous structure offers high strength-to-weight ratio and allows ion transport while maintaining structural integrity, providing cost-effective reinforcement compared to solid materials.
Solution Approach 2:
The membrane-seal assembly uses composite materials by combining the ion-conducting component, seal component, and planar reinforcing component with pores. This composite structure achieves enhanced mechanical strength and functional performance while optimizing material costs through selective material placement and utilization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces material costs and simplifies the manufacturing process, enabling faster production and minimizing contamination risks by confining the seal component to the reactant porting regions, thus enhancing the efficiency and durability of fuel cell components.
Implementation Method 1
a planar reinforcing component comprising a plurality of pores is provided in the plane, such that the ion-conducting component and the seal component fill the plurality of pores
Data Source
AI summary
The present invention provides a process for the manufacture of a reinforced membrane-seal assembly, the process comprising, forming one or more strips of an ion-conducting component in a plane on a temporary carrier component, forming a plurality of strips of seal component in the same plane on the temporary carrier component, such that the one or more strips of an ion-conducting component lie between two of said strips of seal component, wherein a planar reinforcing component comprising a plurality of pores is provided in the plane, such that the ion-conducting component and the seal component fill the plurality of pores, the one or more strips of an ion-conducting component, the plurality of strips of seal component and the planar reinforcing component thereby together form a reinforced membrane-seal assembly, and wherein each strip of ion-conducting component extends from a first end of said assembly to a second opposite end.