Boosting oxygen evolution reaction by activation of lattice-oxygen sites in 
layered Ruddlesden-Popper oxide

Zhu, Yinlong; Tahini, Hassan A.; Hu, Zhiwei; Yin, Yichun; Lin, Qian; Sun, Hainan; Zhong, Yijun; Chen, Yubo; Zhang, Feifei; Lin, Hong-Ji; Chen, Chien-Te; Zhou, Wei; Zhang, Xiwang; Smith, Sean C.; Shao, Zongping; Wang, Huanting

doi:10.1002/eom2.12021

Datensatz

DATENSATZ AKTIONENEXPORT

Zur Ablage hinzufügen

Bitte beachten Sie, dass eine neuere Version dieses Datensatzes verfügbar ist:
https://pure.mpg.de/pubman/item/item_3326609_3

DetailsÜbersicht

Freigegeben

Zeitschriftenartikel

Boosting oxygen evolution reaction by activation of lattice-oxygen sites in layered Ruddlesden-Popper oxide

MPG-Autoren

/persons/resource/persons126666

Hu, Zhiwei
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

Externe Ressourcen

Es sind keine externen Ressourcen hinterlegt

Volltexte (beschränkter Zugriff)

Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.

Volltexte (frei zugänglich)

Es sind keine frei zugänglichen Volltexte in PuRe verfügbar

Ergänzendes Material (frei zugänglich)

Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar

Zitation

Zhu, Y., Tahini, H. A., Hu, Z., Yin, Y., Lin, Q., Sun, H., et al. (2020). Boosting oxygen evolution reaction by activation of lattice-oxygen sites in layered Ruddlesden-Popper oxide. EcoMat, 2(2): e12021, pp. 1-9. doi:10.1002/eom2.12021.

Zitierlink: https://hdl.handle.net/21.11116/0000-0008-B99C-8

Zusammenfassung

Abstract Emerging anionic redox chemistry presents new opportunities for enhancing oxygen evolution reaction (OER) activity considering that lattice-oxygen oxidation mechanism (LOM) could bypass thermodynamic limitation of conventional metal-ion participation mechanism. Thus, finding an effective method to activate lattice-oxygen in metal oxides is highly attractive for designing efficient OER electrocatalysts. Here, we discover that the lattice-oxygen sites in Ruddlesden-Popper (RP) crystal structure can be activated, leading to a new class of extremely active OER catalyst. As a proof-of-concept, the RP Sr3(Co0.8Fe0.1Nb0.1)2O7-δ (RP-SCFN) oxide exhibits outstanding OER activity (eg, 334?mV at 10?mA?cm?2 in 0.1?M KOH), which is significantly higher than that of the simple SrCo0.8Fe0.1Nb0.1O3-δ perovskite and benchmark RuO2. Combined density functional theory and X-ray absorption spectroscopy studies demonstrate that RP-SCFN follows the LOM under OER condition, and the activated lattice oxygen sites triggered by high covalency of metal-oxygen bonds are the origin of the high catalytic activity.