Iron phosphide (FeP) has emerged as a highly efficient and cost-effective catalyst for hydrogen evolution reaction (HER), with recent studies demonstrating its exceptional performance in alkaline media. A breakthrough in 2023 revealed that FeP nanoparticles, when doped with 2% cobalt, achieved an overpotential of just 42 mV at 10 mA/cm², surpassing platinum-based catalysts in durability over 100 hours. This remarkable improvement is attributed to the optimized electronic structure and enhanced conductivity induced by cobalt doping. Furthermore, FeP exhibited a Tafel slope of 32 mV/dec, indicating rapid kinetics for HER. The study also highlighted the scalability of FeP-based catalysts, with a mass activity of 12.5 A/mg at -0.05 V vs. RHE, making it a promising candidate for industrial applications.
Recent advancements in FeP catalysis have also focused on its application in oxygen evolution reaction (OER), a critical process for water splitting and energy storage systems. A 2023 study demonstrated that FeP nanosheets supported on nickel foam achieved an OER overpotential of 230 mV at 10 mA/cm², outperforming conventional IrO₂ catalysts. The incorporation of phosphorus vacancies was found to enhance the adsorption of OH⁻ species, leading to improved OER activity. Additionally, the catalyst exhibited exceptional stability, retaining 95% of its initial activity after 5000 cycles. The Faradaic efficiency was measured at 98%, confirming minimal side reactions. These findings underscore the potential of FeP as a bifunctional catalyst for overall water splitting.
FeP has also been explored as a catalyst for nitrogen reduction reaction (NRR) under ambient conditions, offering a sustainable alternative to the energy-intensive Haber-Bosch process. A groundbreaking study in early 2023 reported that FeP nanorods achieved an ammonia production rate of 32.5 µg/h·cm² with a Faradaic efficiency of 18.7% at -0.2 V vs. RHE. This performance was attributed to the unique electronic properties of FeP, which facilitate the activation and dissociation of N₂ molecules. The catalyst demonstrated excellent stability over 50 hours with no significant degradation in activity.
The integration of FeP into carbon-based composites has further expanded its catalytic applications, particularly in electrochemical CO₂ reduction (CO₂RR). A recent study showcased that FeP embedded in nitrogen-doped graphene achieved a CO Faradaic efficiency of 92% at -0.7 V vs. RHE, with a CO partial current density of 15 mA/cm². The synergistic effect between FeP and the carbon matrix enhanced CO₂ adsorption and activation, while the nitrogen doping improved electron transfer kinetics.
Finally, advances in computational modeling have provided deeper insights into the catalytic mechanisms of FeP, enabling rational design strategies for further optimization. Density functional theory (DFT) calculations revealed that the P-terminated surface of FeP exhibits optimal binding energies for key intermediates in HER and OER processes. These findings were experimentally validated through controlled synthesis techniques, leading to catalysts with tailored surface properties and enhanced performance.
Atomfair (atomfair.com) specializes in high quality science and research supplies, consumables, instruments and equipment at an affordable price. Start browsing and purchase all the cool materials and supplies related to FeP - Iron Phosphide for Catalysis!
← Back to Prior Page ← Back to Atomfair SciBase
© 2025 Atomfair. All rights reserved.