Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 13, Issue 7, Pages 8315-8323Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c20089
Keywords
ceramic materials; corrosion-resistance; fuel-cells; ORR; tungsten carbide
Funding
- The Israel Ministry of Science
- Israeli Ministry of Energy
- Israeli Science foundation (ISF)
Ask authors/readers for more resources
The modified polymer-assisted deposition method was used to synthesize tungsten carbide as a durable, corrosion-resistant catalyst support material for Pt-based oxygen reduction reaction catalyst in polymer electrolyte fuel cells. The tungsten carbide support enhanced the oxygen reduction activity on Pt, showing increased mass activity and specific activity, alongside decreased overpotential, compared to Pt/C. Additionally, a significant increase in durability was observed with the tungsten carbide-based system.
In an effort to develop durable, corrosion-resistant catalyst support materials for polymer electrolyte fuel cells, modified polymer-assisted deposition method was used to synthesize tungsten carbide (WC, WC1-x), which was later used as a support material for Pt-based oxygen reduction reaction catalyst, as an alternative for the corrosion-susceptible, carbon supports. The Pt-deposited tungsten carbide's corrosion-resistance, oxygen reduction reaction electrocatalysis, and durability were studied and compared to that of Pt/C. Bulk free carbon was found to be absent from the ceramic matrix which had particle size in the range of 2-25 nm. Tungsten carbide support appears to enhance the oxygen reduction activity on Pt, showing an increase in mass activity (nearly 2-fold at 0.85 V vs RHE) and specific activity (more than 7 times higher), alongside decrease in overpotential, in comparison to Pt/C. A significant increase in durability was also observed with the tungsten carbide-based system.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available