Round-the-clock bifunctional honeycomb-like nitrogen-doped carbon-decorated Co2P/Mo2C-heterojunction electrocatalyst for direct water splitting with 18.1% STH efficiencyShow others and affiliations
2022 (English)In: Applied Catalysis B: Environmental, ISSN 0926-3373, E-ISSN 1873-3883, Vol. 310, article id 121354Article in journal (Refereed) Published
Abstract [en]
Hydrogen production via solar and electrochemical water splitting is a promising approach for storing solar energy and achieving a carbon-neutral economy. However, hydrogen production by photoelectric coupling remains a challenge. Here, by the cooperative coupling of heteroatoms and a heterojunction interface engineering strategy in a limited space, a honeycomb porous Co2P/Mo2C@NC catalyst was obtained for the first time. In contrast most traditional chemical syntheses, this method maintains excellent electrical interconnections among the nanoparticles and results in large surface areas and many catalytically active sites. Theoretical calculations reveal that the construction of a heterostructure can effectively lower the hydrogen evolution reaction and oxygen evolution reaction barriers as well as improve the electrical conductivity, consequently enhancing the electrochemical performance. Significantly, the overall water-splitting hydrolytic tank assembled using AsGa solar cells enabled the system to achieve a stable solar hydrogen conversion efficiency of 18.1%, which provides a new approach for facilitating large-scale hydrogen production via portable water hydrolysis driven by solar cells.
Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 310, article id 121354
Keywords [en]
Heteroatom cooperative coupling, Heterojunction interface, Intrinsic activity, Overall water splitting, Round-the-clock, Solar-to-hydrogen efficiency
National Category
Other Chemical Engineering
Identifiers
URN: urn:nbn:se:umu:diva-193788DOI: 10.1016/j.apcatb.2022.121354ISI: 000798991800003Scopus ID: 2-s2.0-85127368324OAI: oai:DiVA.org:umu-193788DiVA, id: diva2:1656648
Funder
Swedish Energy Agency, 45419-1Swedish Foundation for Strategic Research , 2030-PUSH2022-05-062022-05-062023-09-05Bibliographically approved