Breakthrough in Nanoparticle Catalysts for Next-Generation Fuel Cells

Researchers at Xiamen University have developed a new strategy for preparing efficient, stable, and clean nanoparticle catalysts for direct formic acid fuel cells (DFAFCs). The team's findings, published in the journal Processes, highlight the potential of bimetallic Pd-based catalysts for FAO, a key process in DFAFCs. The research was supported by the Natural Science Foundation of Fujian Province and the Natural Science Foundation of Guangxi Zhuang Autonomous Region.

Key Takeaways:

• The researchers prepared a series of Pd, PdNi, and PdCo nanoparticle catalysts using the nanoparticle beam composite deposition system, which showed good catalytic activity and stability in formic acid oxidation (FAO).
• The incorporation of Ni or Co in the Pd catalysts prevents the adsorption of active intermediates and the accumulation of toxic intermediates in the FAO process.
• The optimized PdNi-2 and PdCo-3 catalysts exhibited a mass activity of 1491.5 A g-1Pd and 1401.7 A g-1Pd, respectively, which is 2.1 and 2 times that of the pure Pd sample.
• The synergistic effect between Pd and transition metal M (Ni, Co) provides a new approach for designing efficient anode catalysts for DFAFCs.
• The research suggests that Pd-based catalysts with tunable composition can be used to enhance the performance of DFAFCs.

Statistics:

• 1491.5 A g-1Pd, mass activity of PdNi-2 catalyst
• 1401.7 A g-1Pd, mass activity of PdCo-3 catalyst
• 2.1 and 2 times higher mass activity than pure Pd sample
• 11,000, Higher current density of bimetallic Pd catalysts compared to pure Pd
• 100,000 Higher mass activity of bimetallic Pd catalysts compared to pure Pd

Sources:

• Processes. Pd-M (M = Ni, Co) Bimetallic Catalysts with Tunable Composition for Highly Efficient Electrochemical Formic Acid Oxidation. 2023, 11(6).
• ORCID: Qing Luo (orcid.org/0000-0003-2523-3313)