Three dimensional star-like mesoporous nitrogen-doped carbon anchored with highly dispersed Fe and Ce dual-sites for efficient oxygen reduction reaction in Zn-air batteryShow others and affiliations
2022 (English)In: Colloid and Interface Science Communications, ISSN 2215-0382, Vol. 49, article id 100634Article in journal (Refereed) Published
Abstract [en]
Metal‑nitrogen‑carbon materials (M-N-C) have attracted much attention due to their low cost, high abundance, and efficient catalytic performance. Nevertheless, Fe-N-C materials are considered the most promising oxygen reduction reaction (ORR) catalysts for replacing noble metals. Ce is chemically active and has many metal valence states, and empty orbitals that can participate in coordination. On this basis, Fe, Ce-codoped catalyst was constructed in this study. The synergistic effect of the dual metal centers was verified, and a Fe, Ce-codoped nitrogen-doped carbon (FeCeNC) with six equal branch angles was proposed. The half-wave potential for the ORR catalyzed by FeCeNC is 0.855 V. As a rechargeable Zn-air battery cathode catalyst, FeCeNC exhibits excellent electrochemical performances, with an open-circuit voltage of 1.427 V, a maximum power density of 169.2 mW cm−2 and a stable cycling time of 80 h, demonstrating an excellent cycle performance.
Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 49, article id 100634
Keywords [en]
Fe, Ce-codoped, Metal‑nitrogen‑carbon, Oxygen reduction reaction, Zinc-air battery
National Category
Other Chemical Engineering Condensed Matter Physics Physical Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-197998DOI: 10.1016/j.colcom.2022.100634ISI: 000822689400002Scopus ID: 2-s2.0-85132913983OAI: oai:DiVA.org:umu-197998DiVA, id: diva2:1682512
2022-07-112022-07-112023-09-05Bibliographically approved