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Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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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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Updated: Nov 17, 2025

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles
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Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles

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Durable Tungsten Carbide Support for Pt-Based Fuel Cells Cathodes.

Oran Lori1, Shmuel Gonen1, Omree Kapon1

  • 1Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel.

ACS Applied Materials & Interfaces
|February 15, 2021
PubMed
Summary

Researchers developed a durable tungsten carbide (WC) catalyst support for polymer electrolyte fuel cells. This WC support enhances oxygen reduction reaction activity and durability compared to traditional carbon supports.

Keywords:
ORRceramic materialscorrosion-resistancefuel-cellstungsten carbide

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Polymer electrolyte fuel cells (PEFCs) require durable, corrosion-resistant catalyst supports.
  • Traditional carbon supports are susceptible to corrosion, limiting PEFC lifespan.
  • Tungsten carbide (WC) is explored as a potential alternative catalyst support material.

Purpose of the Study:

  • To synthesize and evaluate tungsten carbide (WC) as a catalyst support for Pt-based oxygen reduction reaction (ORR) catalysts in PEFCs.
  • To compare the performance, corrosion resistance, and durability of Pt/WC against Pt/C.
  • To investigate the electrocatalytic properties of Pt-deposited WC.

Main Methods:

  • Modified polymer-assisted deposition method was employed to synthesize WC.
  • Tungsten carbide was used as a support for platinum (Pt) catalysts.
  • Electrochemical testing was performed to assess ORR activity and durability, comparing Pt/WC with Pt/C.

Main Results:

  • Synthesized WC support material had a ceramic matrix with particle sizes of 2-25 nm and no bulk free carbon.
  • Pt/WC demonstrated enhanced ORR electrocatalysis, with nearly 2-fold increase in mass activity and over 7-fold increase in specific activity at 0.85 V vs RHE compared to Pt/C.
  • Pt/WC exhibited a significant increase in durability and a decrease in overpotential.

Conclusions:

  • Tungsten carbide is a promising, corrosion-resistant alternative to carbon supports for PEFCs.
  • WC supports enhance the electrocatalytic activity and durability of Pt-based ORR catalysts.
  • The developed Pt/WC system offers improved performance for polymer electrolyte fuel cells.