Iron-nickel layered dihydroxide nanosheet-wrapped single-layer ordered mesoporous carbon with novel riveting structure as a superior composite electrocatalyst for oxygen evolution reaction

Wang, Ying; Qiao, Mengfei; Qiao, Liqing; Shi, Kang

doi:10.1016/j.electacta.2022.141739

Cited by 2 publications

(1 citation statement)

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“…The N 1s spectra confirmed the presence of pyridine N (398.2 eV), pyrrole N (399.7 eV), graphite N (401.8 eV), and oxidized N (402.9 eV; Figures f and S7). Graphitic N-doped carbon materials have served as excellent conductive supports for electrocatalysts. − …”

Section: Resultsmentioning

confidence: 99%

Interface Engineering Construction of a Ag-Modified Crystalline CoFe@Amorphous Fe₂O₃ Composite for Superior Oxygen Evolution Electrocatalysis

Bo,

Shen,

et al. 2024

ACS Sustainable Chem. Eng.

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The sluggish kinetics of the oxygen evolution reaction (OER) is a key resistance limiting the efficiency of related technologies. CoFe-based compounds, mainly alloys and oxides, are recognized as effective OER catalysts, with amorphous metal oxides displaying unique properties. The catalytic activity of a catalyst is intricately linked to its surface reactivity. However, efforts to construct composites with interfaces between CoFe-based metal alloys and amorphous metal oxides to further enhance the OER activities have progressed relatively slowly. In this work, a composite catalyst, denoted Ag/CoFe/Fe 2 O 3 /NC, was fabricated by incorporating Ag into crystalline CoFe@amorphous Fe 2 O 3 particles wrapped in graphitic N-doped carbon. The composite exhibited modulated electron density of Co active sites, promoted O 2 release, and an enhanced electron transfer rate on the heterogeneous interface between crystalline CoFe and amorphous Fe 2 O 3 . Additionally, the introduction of highly conductive Ag improved the electrical conductivity. Consequently, the composite demonstrated excellent performance and stability for OER in 1 M KOH. Notably, the catalyst exhibited competitive performance, requiring overpotentials of only 166 and 282 mV at 10 and 100 mA cm −2 , respectively. This places the catalyst among the most efficient, as far as we know. This work provides an excellent example of the rational design of electrocatalysts.

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Section: Resultsmentioning

confidence: 99%

Interface Engineering Construction of a Ag-Modified Crystalline CoFe@Amorphous Fe₂O₃ Composite for Superior Oxygen Evolution Electrocatalysis

Bo,

Shen,

et al. 2024

ACS Sustainable Chem. Eng.

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Ni2P/Co2P as a highly efficient catalyst for enhancing the electrochemical performance of P-NiMoO4 for oxygen evolution reaction

Mandari,

Kang

2024

Journal of Alloys and Compounds

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Iron-nickel layered dihydroxide nanosheet-wrapped single-layer ordered mesoporous carbon with novel riveting structure as a superior composite electrocatalyst for oxygen evolution reaction

Cited by 2 publications

References 54 publications

Interface Engineering Construction of a Ag-Modified Crystalline CoFe@Amorphous Fe₂O₃ Composite for Superior Oxygen Evolution Electrocatalysis

Interface Engineering Construction of a Ag-Modified Crystalline CoFe@Amorphous Fe₂O₃ Composite for Superior Oxygen Evolution Electrocatalysis

Ni2P/Co2P as a highly efficient catalyst for enhancing the electrochemical performance of P-NiMoO4 for oxygen evolution reaction

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Iron-nickel layered dihydroxide nanosheet-wrapped single-layer ordered mesoporous carbon with novel riveting structure as a superior composite electrocatalyst for oxygen evolution reaction

Cited by 2 publications

References 54 publications

Interface Engineering Construction of a Ag-Modified Crystalline CoFe@Amorphous Fe2O3 Composite for Superior Oxygen Evolution Electrocatalysis

Interface Engineering Construction of a Ag-Modified Crystalline CoFe@Amorphous Fe2O3 Composite for Superior Oxygen Evolution Electrocatalysis

Ni2P/Co2P as a highly efficient catalyst for enhancing the electrochemical performance of P-NiMoO4 for oxygen evolution reaction

Contact Info

Product

Resources

About

Interface Engineering Construction of a Ag-Modified Crystalline CoFe@Amorphous Fe₂O₃ Composite for Superior Oxygen Evolution Electrocatalysis

Interface Engineering Construction of a Ag-Modified Crystalline CoFe@Amorphous Fe₂O₃ Composite for Superior Oxygen Evolution Electrocatalysis