Abstract
Single-atom catalysts have been extensively researched in electrocatalytic oxygen reduction and evolution reactions (ORR/OER) due to their tunable coordination environment. However, the linear scaling relationship (LSR) of oxygen intermediate adsorption energies imposes limitations in simultaneously enhancing ORR/OER. Herein, a unique asymmetrically coordinated FeN3P1 single-atom configuration coupled by Fe2P nanoparticle is synthesized via a prefabricated Fe-N/P coordination strategy. The accentuated structural distortion induced by Fe2P can effectively break the LSR, lowering the energy barriers for ORR/OER. Kinetically, a modulation of OH− concentration by Fe2P on the catalytic interface was identified by finite element simulation and molecular dynamics simulation, which can positively facilitate ORR/OER kinetics. The obtained Fe2P@FeN3P1-NC catalyst exhibits excellent bifunctional ORR/OER (∆E = 0.65 V) and a promising application in zinc-air battery. This work provides a valuable insight into simultaneous regulation of thermodynamic and kinetic behavior by tailored structure distortion and enriched surface ions for ORR/OER.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
