High-Temperature Fuel Cell with Amorphous Carbon Membrane
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Summary
Problems
Conventional fuel cells are limited by operating temperatures below 100°C due to the use of polymer membranes that require high liquid water content for ionic conductivity, leading to complex thermal management and lower power density.
Innovation solutions
A fuel cell with a gastight, electrically insulating, and proton-conducting amorphous carbon membrane element allows operation up to 350°C, eliminating the need for moisture and simplifying cooling, while maintaining high proton conductivity at low moisture levels, and can be doped for improved performance.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If polymer membranes are used for ionic conductivity, then proton conduction is achieved, but operating temperature is limited to below 100°C due to liquid water vaporization
Why choose this principle:
The patent changes the material parameter of the membrane from polymer to amorphous carbon, which fundamentally alters the thermal and conductive properties. This material substitution enables operation at temperatures up to 350°C while maintaining proton conductivity through the unique properties of amorphous carbon structure
Principle concept:
If polymer membranes are used for ionic conductivity, then proton conduction is achieved, but operating temperature is limited to below 100°C due to liquid water vaporization
Why choose this principle:
The patent employs amorphous carbon as a composite membrane material that combines gastight properties, electrical insulation, and proton conduction in a single structure. This composite approach resolves the contradiction by integrating multiple functional properties that were previously conflicting in polymer membranes
Application Domain
Data Source
AI summary:
A fuel cell with a gastight, electrically insulating, and proton-conducting amorphous carbon membrane element allows operation up to 350°C, eliminating the need for moisture and simplifying cooling, while maintaining high proton conductivity at low moisture levels, and can be doped for improved performance.
Abstract
The invention relates to a fuel cell ( 110 ) comprising two gas diffusion layers ( 70 ), two electrode elements ( 10, 10 ′) and a membrane element ( 30 ). The membrane element ( 30 ) is arranged between the two gas diffusion layers ( 70 ), each electrode element ( 10, 10 ′) being embedded between a gas diffusion layer ( 70 ) and the membrane element ( 30 ). The membrane element ( 30 ) is in the form of an amorphous carbon layer.