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Metal-organic framework-derived S-NiFe PBA coupled with NiFe layered double hydroxides as Mott-Schottky electrocatalysts for efficient alkaline oxygen evolution reaction.
- Source :
-
Chemical Engineering Journal . Sep2023, Vol. 471, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
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Abstract
- [Display omitted] • The S-NiFe PBA@NiFe in situ grown on the NF expedites electron conduction. • The Mott-Schottky heterojunctions of S-NiFe PBA@NiFe promote electron transport. • S-NiFe PBA@NiFe/NF presents outstanding OER activity in 1 M KOH electrolyte. • S-NiFe PBA@NiFe possesses low overpotential of 196.7 mV and perfect durability. Development of economical and high-efficient catalytic electrodes is a top priority for oxygen evolution reactions (OER). Non-precious metal based metal–organic frameworks (MOFs) in powder form remain a series of problems including the assistance of adhesive, poor conductivity and stability. Herein, a well-designed S-NiFe PBA@NiFe/NF composite with a unique Mott-Schottky heterojunction architecture was purposefully constructed by self-sacrificing template approach and electrodeposition. The growth of S-NiFe PBA@NiFe on NF through in situ synthesis promotes efficient electron conduction between the NF substrate and S-NiFe PBA@NiFe catalyst, leading to a stable and highly effective working state. The Mott-Schottky heterojunctions between S-NiFe PBA and NiFe-layered double hydroxides (LDH) effectively expedite electronic transmission. Consequently, S-NiFe PBA@NiFe/NF exhibits outstanding OER behavior at 1.0 M KOH, exhibiting a low Tafel slope of 39 mV dec−1 and at 10 mA cm−2, reaching an unexpectedly low overpotential of 196.7 mV. Furthermore, the S-NiFe PBA@NiFe/NF maintains long-term durability without evident performance degradation for 100 h. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13858947
- Volume :
- 471
- Database :
- Academic Search Index
- Journal :
- Chemical Engineering Journal
- Publication Type :
- Academic Journal
- Accession number :
- 169790070
- Full Text :
- https://doi.org/10.1016/j.cej.2023.144827