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Experimental and Computational Study of Optimized Gas Diffusion Layer for Polymer Electrolyte Membrane Electrolyzer.

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Summary

Optimizing the sintering temperature of titanium GDL (gas diffusion layer) using simulation and experiments enhances PEMFC and electrolyzer efficiency. This novel approach boosts sustainable energy solutions by improving GDL performance.

Keywords:
GDLGeoDictPEMFCoptimizationphysical propertiestape casting

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Sustainable Energy

Background:

  • Polymer electrolyte membrane fuel cells (PEMFCs) and electrolyzers are key to zero-carbon energy.
  • Gas diffusion layers (GDLs) are critical for efficiency and component protection in these devices.
  • Limited simulation work exists for optimizing GDL properties.

Purpose of the Study:

  • To optimize the sintering temperature of titanium GDL (Ti64) using a combined simulation and experimental approach.
  • To enhance the performance and commercial feasibility of PEMFCs and electrolyzers through GDL improvement.
  • To validate the accuracy of the GeoDict simulation tool for GDL property optimization.

Main Methods:

  • Ti64 GDL was fabricated using tape casting, with optimized slurry composition, rheology, casting, drying, and debinding parameters.
  • Porosity and mechanical properties of GDL samples were experimentally evaluated at various sintering temperatures.
  • GeoDict simulation software was employed to model GDL properties, and results were compared with experimental data.

Main Results:

  • Tape casting parameters were optimized for producing high-quality Ti64 GDL.
  • Experimental and simulated results for GDL properties showed approximately 96% accuracy.
  • The study successfully identified an optimal sintering temperature range for Ti64 GDL.

Conclusions:

  • Combining simulation (GeoDict) and experimental methods is effective for optimizing Ti64 GDL properties.
  • Optimized GDLs are crucial for improving the efficiency and commercial viability of PEMFCs and electrolyzers.
  • This research contributes significantly to the advancement of sustainable energy technologies.