Preparation of 3D Fe-Co-Ni-OH/NiCoP electrode as a highly efficient electrocatalyst in the oxygen evolution reactions

Su, Wenxiao; Wang, Denghui; Zhou, Qi; Zheng, Xiaoping

doi:10.1016/j.jallcom.2022.168578

Cited by 13 publications

(6 citation statements)

References 37 publications

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“…As a result, these results verify that B doping can efficiently enhance the catalytic performance of B–Co/Co 2 P, making it a promising OER electrode, even comparable to state-of-the art OER electrocatalysts reported recently (Figure c and Table S1). ,− Figure d presents the Tafel plots of B–Co/Co 2 P and Co/Co 2 P, and both of them possess a similar Tafel slope of 79.56 mV dec –1 , indicating that the boron doping did not change the reaction kinetics of the interfacial electrocatalysts. To explore the effect of B doping, electrochemical impedance spectroscopy was furthermore carried out to evaluate the interfacial charge transfer at the electrocatalysts and electrolytes.…”

Section: Resultsmentioning

confidence: 96%

Elemental Charge Engineering in Cobalt and Cobalt–Phosphide Interface for Enhanced Oxygen Evolution and Urea Oxidation Reactions

Ding,

Xiang,

Wan

et al. 2024

ACS Appl. Energy Mater.

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The development of cost-effective electrocatalysts with high performance for oxygen evolution and urea oxidation reaction (OER/UOR) is desirable but remains a great challenge. Here, we report a facile strategy for boron-doping cobalt and cobalt−phosphide interfacial electrocatalysts (B− Co/Co 2 P) for bifunctional OER/UOR. By virtue of B doping, the abundant exposed active sites as well as enhanced electrical conductivity can efficiently improve charge migration of the heterogeneous interfacial sites. Therefore, the obtained B−Co/Co 2 P electrocatalysts exhibit bifunctional OER/UOR activities with an outstanding overpotential of 284 and 107 mV at an industrial current density of 100 mA cm −2 , respectively. Such an excellent catalytic performance is attributed to the fact that the B dopant adjusts the electron distribution of interfacial catalytic sites and optimizes the adsorption/desorption of reaction intermediate species, as well as reduces the energy barriers of water oxidation. Furthermore, the setup two-electrode cell requires merely overpotentials of 280.7 and 56.9 mV to drive 10 mA cm −2 with robust stability in water splitting and urea electrolysis, respectively. Overall, this report provides a strategy to construct bifunctional OER/UOR catalysts with high efficiency for hydrogen generation.

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Section: Resultsmentioning

confidence: 96%

Elemental Charge Engineering in Cobalt and Cobalt–Phosphide Interface for Enhanced Oxygen Evolution and Urea Oxidation Reactions

Ding,

Xiang,

Wan

et al. 2024

ACS Appl. Energy Mater.

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“…6b), the peaks at 711.6 and 724.2 eV correspond to Fe 2p 1/2 and Fe 2p 3/2 , indicating the involved iron with an oxidation state of +3. 58,59 After the OER, the bands red shift to 710.7 and 723.2 eV, respectively. 60,61 The obvious red shift confirms the chemical environment change.…”

Section: Resultsmentioning

confidence: 99%

Amorphous Fe/Co-based tannic acid salts as robust oxygen evolution pre-catalysts

Zhu,

Wang,

Zhu

et al. 2023

New J. Chem.

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“…Zhou et al have used the same method to form FeÀ CoÀ NiÀ OH/NiCoP composite electrodes by rapid etching of the required FeÀ CoÀ NiÀ OH materials for in situ growth on a 3D NiCoP framework. [71] The sample prepared by Ni 2.5 Co 2.5 -P etching of 1 min showed the best OER performance. Particularly, the OER performance of Fe-1 min above the current density of 180 mA cm À 2 was higher than that of RuO 2 (Figure 7a).…”

Section: Polymetallic Hydroxidesmentioning

confidence: 88%

“…Zhou et al. have used the same method to form Fe−Co−Ni−OH/NiCoP composite electrodes by rapid etching of the required Fe−Co−Ni−OH materials for in situ growth on a 3D NiCoP framework [71] . The sample prepared by Ni 2.5 Co 2.5 ‐P etching of 1 min showed the best OER performance.…”

Section: Iron‐group Metal (Oxy)hydroxidesmentioning

confidence: 99%

Iron‐group Metal Compound Electrocatalysts for Efficient Hydrogen Production: Recent Advances and Future Prospects

Wang,

Su,

Liu

et al. 2024

ChemCatChem

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Hydrogen production by electrochemical water splitting is a very potential technology in hydrogen production at present. In particular, iron‐group metal compound electrocatalysts are promising materials for electrochemical water splitting due to high catalytic activity, good electrical conductivity, low cost, and environmental friendliness. However, the practical application of such catalysts was hindered for a long time due to low efficiency and poor long‐term stability. The introduction of metal/non‐metal or the preparation of heterostructures in the catalyst can enhance conductivity, accelerate charge transfer, and improve the stability of the catalyst. In this paper, we summarise recent research progress about iron‐group metal compound electrocatalysts in the hydrogen evolution reaction, oxygen evolution reaction, and overall water‐splitting, briefly discuss the remaining challenges in this field of research, and make suggestions for the preparation of future electrocatalysts.

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Preparation of 3D Fe-Co-Ni-OH/NiCoP electrode as a highly efficient electrocatalyst in the oxygen evolution reactions

Cited by 13 publications

References 37 publications

Elemental Charge Engineering in Cobalt and Cobalt–Phosphide Interface for Enhanced Oxygen Evolution and Urea Oxidation Reactions

Elemental Charge Engineering in Cobalt and Cobalt–Phosphide Interface for Enhanced Oxygen Evolution and Urea Oxidation Reactions

Amorphous Fe/Co-based tannic acid salts as robust oxygen evolution pre-catalysts

Iron‐group Metal Compound Electrocatalysts for Efficient Hydrogen Production: Recent Advances and Future Prospects

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