.png){kind=icon}
.png){kind=icon}
Return
Bilateral oxygen vacancies in LaCo 0.5 Fe 0.5 O 3 @CoFe-LDH induced by deep plasma etching triggers the dual-path mechanism for stable water oxidation
.png){kind=icon}
PRE
AI
J
Z
H
J
Y
W
Z
DOI：10.1039/D5TA09591C.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Developing efficient catalysts with controllable defects for the electrochemical oxygen evolution reaction (OER) remains a critical challenge in the field of energy conversion technologies. Herein; we have developed an oxygen-deficient CoFe layered double hydroxide (LDH) coated on oxygen-vacancy-rich LaCo0.5Fe0.5O3 (LCFO) through an electrochemical deposition followed by a deep plasma etching under O2 atmosphere; abbreviated as LCFO@LDH-O2. The bilateral oxygen vacancies significantly enhance the built-in electric field (IEF) of the pn heterojunction; thereby dramatically promoting electron transfer. Benefiting from the bilateral oxygen vacancies; LCFO@LDH-O2 exhibits a low overpotential of only 271 mV at a current density of 100 mA cm -2 ; along with significantly improved catalytic stability compared to pristine LCFO. Moreover; the stability of the LCFO@LDH-O2 catalyst is significantly higher than that of LCFO and LCFO@LDH. Based on synchrotron radiation and density functional theory (DFT) calculations; the lattice oxygen mechanism (LOM) can bypass the scaling relation-induced limitations on this catalyst through the adsorbate evolution mechanism (AEM).
Journal
J
IF:
0
Papers:
1.6K
Citations:
0
Organization
No organization information available
Cited Papers