FeNi3/Ni2P heterojunction encapsulated in N-doped carbon nanotubes as an effective electrocatalyst for oxygen evolution reaction

Yang, Qinghua; Fu, Yingyan; Liao, Wenhao; Zhang, Yaqi; Qian, Min; Dai, Haojiang; Tong, Xianfeng; Chen, Tianyun

doi:10.1016/j.ijhydene.2021.09.207

Cited by 23 publications

(6 citation statements)

References 40 publications

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“…The stability of the V-CNFS/Ni 9 S 8 electrocatalyst for the OER was evaluated by the chronoamperometric method (CP). As shown in Figure (f), under a constant current density of 50 mA cm –2 , the overpotential only lost 10.8 mV after CP testing for 72 h, which is better than the stability of CNFS (overpotential only loss of 27 mV after CP testing for 60 h), demonstrating the heterojunction structure of V-CNFS/Ni 9 S 8 increases the stability of the catalyst . The stability of the catalyst was further confirmed by characterizing the recovered catalyst using SEM, Raman, and XPS techniques.…”

Section: Resultsmentioning

confidence: 74%

“…As shown in Figure 4(f), under a constant current density of 50 mA cm −2 , the overpotential only lost 10.8 mV after CP testing for 72 h, which is better than the stability of CNFS (overpotential only loss of 27 mV after CP testing for 60 h), 9 demonstrating the heterojunction structure of V-CNFS/ Ni 9 S 8 increases the stability of the catalyst. 41 The stability of the catalyst was further confirmed by characterizing the recovered catalyst using SEM, Raman, and XPS techniques. The SEM image in Figure S5 clearly shows that the hollow structure of the catalyst remains unchanged before and after the CP test, and the catalyst is evenly dispersed on the carbon cloth substrate.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Internal and External Cultivation Strategy toward Efficient Electrochemical Oxygen Evolution in Cobalt Pentlandite

Liu,

Tian,

Mei

et al. 2023

ACS Sustainable Chem. Eng.

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Oxygen evolution reaction (OER) plays an important role in various renewable energy conversion scenarios for carbon neutralization. Constructing interface engineering and element doping has been extensively developed to tune the electrocatalytic OER activity of electrocatalysts. However, it is challenging to simultaneously conduct doping and interface engineering, and insights into the structure–property relationship are insufficient. Here, we designed the cobalt pentlandite OER catalyst (V-CNFS/Ni9S8) by an external and internal cultivation strategy that combines the external modulation of active sites of the catalyst surface through heterostructure construction and the internal modulation of the electronic structure of cobalt pentlandite through heteroatom doping. At the same time, this strategy also leads to the redistribution of interfacial electrons, thereby enhancing the catalytic activity. The elaborate electrocatalyst V-CNFS/Ni9S8 with optimized composition and typical hollow structure accelerates the electrochemical reactions, which can show an overpotential of 305 mV at 50 mA cm–2, and high stability for 72 h. This work reports an efficient OER electrocatalyst, which may open numerous opportunities to the development of cobalt pentlandite catalysts in renewable energy conversion and storage technology.

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Section: Resultsmentioning

confidence: 74%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Internal and External Cultivation Strategy toward Efficient Electrochemical Oxygen Evolution in Cobalt Pentlandite

Liu,

Tian,

Mei

et al. 2023

ACS Sustainable Chem. Eng.

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“…Fig. 3e shows the Tafel diagram of the previously reported OER catalysts containing Ni 2 P. 19,44,48,49,53,54,56,58–64 Obviously, the NiFeCo-P/NF catalyst exhibits excellent OER performance.…”

Section: Resultsmentioning

confidence: 96%

An in situ formed ZIF-67 derived NiFeCo-P nano-array for accelerating the electrocatalytic oxygen evolution reaction

Guo,

Li,

Wang

et al. 2024

Energy Adv.

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“…The authors have cited additional references within the Supporting Information. [60][61][62][63][64][65][66][67][68]…”

Section: Supporting Informationmentioning

confidence: 99%

Fe‐Ni₂P@NPC Synthesized by Trametes Orientalis as an Efficient Electrocatalyst for the Oxygen Evolution Reaction

Jia

Lei

et al. 2023

ChemCatChem

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Developing non‐noble metal catalysts for the oxygen evolution reaction (OER) is one of the main challenges in the production of hydrogen energy by water splitting reaction. Herein, taking advantage of the fact that microorganisms have high element contents and metabolic activities, we used them to recycle Ni and Fe from electroplating sludge. Based on the above, we designed a highly efficient oxygen evolution catalyst (Fe‐Ni2P@NPC) through the in situ synthesis of Fe‐doped Ni2P nanoparticles and N, P dual‐doped carbon materials coupled together. The material exhibited excellent catalytic activity, with a low overpotential of 282 mV at the current density of 10 mA cm−2 along with a fast reaction kinetics, with a small Tafel slope of 57.1 mV dec−1. This outstanding OER performance is mainly attributed to the in situ doping of Fe in Ni2P nanoparticles, resulting in a strong synergistic effect between them. Besides, the strong coupling interaction between Fe‐Ni2P and Fe‐NiOOH formed during the OER can adjust the electron distribution and optimize the adsorption capacity of the intermediates. This work provides a reference for the recycling of valuable Ni and Fe metals from electroplating sludge, as well as new insight into the preparation of low‐cost and high‐performance OER catalysts.

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FeNi3/Ni2P heterojunction encapsulated in N-doped carbon nanotubes as an effective electrocatalyst for oxygen evolution reaction

Cited by 23 publications

References 40 publications

Internal and External Cultivation Strategy toward Efficient Electrochemical Oxygen Evolution in Cobalt Pentlandite

Internal and External Cultivation Strategy toward Efficient Electrochemical Oxygen Evolution in Cobalt Pentlandite

An in situ formed ZIF-67 derived NiFeCo-P nano-array for accelerating the electrocatalytic oxygen evolution reaction

Fe‐Ni₂P@NPC Synthesized by Trametes Orientalis as an Efficient Electrocatalyst for the Oxygen Evolution Reaction

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FeNi3/Ni2P heterojunction encapsulated in N-doped carbon nanotubes as an effective electrocatalyst for oxygen evolution reaction

Cited by 23 publications

References 40 publications

Internal and External Cultivation Strategy toward Efficient Electrochemical Oxygen Evolution in Cobalt Pentlandite

Internal and External Cultivation Strategy toward Efficient Electrochemical Oxygen Evolution in Cobalt Pentlandite

An in situ formed ZIF-67 derived NiFeCo-P nano-array for accelerating the electrocatalytic oxygen evolution reaction

Fe‐Ni2P@NPC Synthesized by Trametes Orientalis as an Efficient Electrocatalyst for the Oxygen Evolution Reaction

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Product

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Fe‐Ni₂P@NPC Synthesized by Trametes Orientalis as an Efficient Electrocatalyst for the Oxygen Evolution Reaction