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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Beyond Membranes: Recent Advances in Membrane-Free Fuel Cells.

Meylin Sanabria León1, Maximina Luis-Sunga1, Nicolás Alejandro Sacco2

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Membraneless fuel cells (MFCs) offer a simpler, more robust, and cost-effective alternative to traditional proton-exchange membrane fuel cells (PEMFCs). Recent advances in MFC design and catalysis show promise for sustainable energy solutions.

Keywords:
fuel cellsmembraneless laminar flow fuel cellsmixed‐reactant membraneless fuel cellspolymeric membranesproton exchange membrane fuel cells

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Area of Science:

  • Sustainable Energy Technologies
  • Electrochemistry
  • Materials Science

Background:

  • Growing energy demand necessitates clean and efficient power generation.
  • Proton-exchange membrane fuel cells (PEMFCs) are a leading clean energy technology but face challenges.
  • High costs, slow kinetics, and internal resistance limit PEMFC scalability.

Purpose of the Study:

  • To review recent advancements in membraneless fuel cells (MFCs).
  • To highlight improvements in MFC design and catalysis.
  • To assess the potential of MFCs as a sustainable energy solution.

Main Methods:

  • Review of recent scientific literature on membraneless fuel cells.
  • Analysis of design innovations in MFC systems.
  • Evaluation of catalytic advancements for enhanced MFC performance.

Main Results:

  • Membraneless fuel cells (MFCs) offer enhanced efficiency, robustness, and durability compared to PEMFCs.
  • Removal of the membrane simplifies MFC systems, reducing production and maintenance costs.
  • Optimized catalysis in MFCs improves reaction kinetics and overall performance.

Conclusions:

  • Membraneless fuel cells present a viable and advantageous alternative to traditional fuel cell technologies.
  • Advancements in MFC design and catalysis are paving the way for their widespread adoption.
  • MFCs hold significant potential for contributing to sustainable energy applications and reducing emissions.