Uniform NiFe phosphide nanosheets arrays on carbon cloth as high-performance oxygen evolution catalysts

Teng, Changqing; Zhang, Ning; Gao, Xuehui; Li, Xiaoyu; Wu, Zongxiao; Wang, Wencong; Zhi, Mingjia; Hong, Zhanglian

doi:10.1016/j.mtener.2018.11.008

Cited by 22 publications

(11 citation statements)

References 45 publications

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“…[ 17a ] For P spectra, the peak located at 133.0 eV can be assigned to the oxidized phosphide species due to surface oxidation. [ 19 ] The other peak at 129.3 eV corresponds to metallic phosphides (Figure 2c). [ 20 ] For as‐prepared NiFeN, the binding energies at 852.7 and 869.7 eV are ascribed to the nitridation of Ni species (Figure 2e).…”

Section: Resultsmentioning

confidence: 99%

A Unique NiOOH@FeOOH Heteroarchitecture for Enhanced Oxygen Evolution in Saline Water

et al. 2022

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The development of highly efficient non‐precious metal electrocatalysts for the oxygen evolution reaction (OER) in low‐grade or saline water is currently of great importance for the large‐scale production of hydrogen. In this study, by using an electrochemical activation pretreatment, metal oxy(hydroxide) nanosheet structures derived from self‐supported nickel–iron phosphide and nitride nanoarrays grown on Ni foam are successfully fabricated for OER catalysis in saline water. It is demonstrated that the different NiOOH and NiOOH@FeOOH (NiOOH grown on FeOOH) structures are generated from nickel–iron nitride and phosphide, respectively, after electrochemical activation. In particular, the NiOOH@FeOOH heteroarchitecture shows outstanding electrocatalytic performance with an ultralow overpotential of 292 mV to drive the current density of 500 mA cm−2. An unconventional dual‐sites mechanism (UDSM) is proposed to address the OER process on NiOOH@FeOOH and show that the FeOOH underlayer plays a critical role regarding the enhanced OER activity of NiOOH. The new possible UDSM involving two reaction sites presents a different understanding of the OER process on multi‐OH layer complexes, which is expected to guide the design of heteroarchitecture electrocatalysts.

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Section: Resultsmentioning

confidence: 99%

A Unique NiOOH@FeOOH Heteroarchitecture for Enhanced Oxygen Evolution in Saline Water

et al. 2022

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“…[ 114 ] Actually, many experimental works have further confirmed this, and hence the metal phosphide actually act as the precatalysts and the in situ formed amorphous (oxy)hydroxide species play a vital role in the OER process. [ 115 ]…”

Section: Phosphidesmentioning

confidence: 99%

Phosphorus‐Based Electrocatalysts: Black Phosphorus, Metal Phosphides, and Phosphates

Wang

2020

Adv Materials Inter

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their efficiencies, the catalysts employed are basically required to overcome the high energy barriers and sluggish kinetics of the electrochemical HER, OER, and ORR. [3] The benchmarking catalysts for ORR and HER are platinum (Pt)-based noble metal catalysts, whereas iridium (Ir) and ruthenium (Ru) oxides are highly active toward the OER. [4] Nevertheless, the high cost and scarcity of these precious metal-based catalysts have notably hindered their wide applications and commercialization. [5] Therefore, developing highly active, low cost, and sustained catalysts for these key electrocatalytic processes is paramount and apparently rewarding for the sustainable and large-scale implementation of clean energy devices. [6] To reduce, and hopefully to eliminate the usage of these precious metal-based catalysts, there have been intensive researches, in order to develop the practically and economically viable alternative electrocatalysts. [7] In this connection, phosphorus (P) is one of the most earth-abundant elements, thereby P-based materials have been considered being employed for electrocatalysis. [8] Indeed, P-based inorganic materials, especially the black phosphorus, metal phosphides, and metal phosphates, have attracted immense attention recently as a class of promising electrocatalysts, and presented intrinsic electrochemical activity and widely tunable properties. [9] Black phosphorus (BP) is a layer-structured semiconductor, in which individual atomic layers are stacked and held together by van der Waals interactions. [10,11] Until recently, BP stands out as a group of promising catalysts that have been investigated and shown to exhibit catalytic activities, owing to their unique puckered layer-structure, tunable band gap, and high carrier mobility. [12,13] As suggested by recent researches, 2D catalysts with reduced layer numbers or the thickness can present increased surface area and hence expose additional active sites, in comparison with their bulk counterparts. [14] To this end, phosphorene, as the building block for BP, possesses a monolayer (or a few layer) sheet structure, and has been explored for electrocatalysis and expected to promote the catalytic efficiency. [15,16] Nevertheless, because of the densely packed lone-pair p-electrons of phosphorus atoms, it would be hard for phosphorene to adsorb hydrogen, leading to the large hydrogen adsorption energy, and thus poor HER electrocatalytic Enormous progresses have been made in developing advanced energy conversion and storage technologies, which inevitably require high-performance electrocatalysts. Recently, phosphorus (P)-based materials have drawn tremendous attention as a class of promising electrocatalysts and presented intrinsic electrochemical activity and widely tunable property. In a timely response to the ongoing interests, issues faced in P-based inorganic materials, and the approaches to address them in relation to energy conversion reactions, including hydrogen evolution reaction, oxygen evolution reaction, and oxygen reduction reactio...

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“…For all M x P y /CNF samples, the P 2p core level scans can be fitted with a pair of peaks located at 129.8 eV and 134.3 eV, respectively (in figure 3(b), (e), (h) and (k)). The peak below 130 eV (129.8 eV) can be assigned to P in metal phosphide and the one above 130 eV (134.3 eV) can be assigned to P in phosphate [38,46,47]. This is due to the partial oxidation of phosphide in air.…”

Section: Resultsmentioning

confidence: 99%

Electrospinning metal Phosphide/Carbon nanofibers from Phytic Acid for hydrogen evolution reaction catalysts

et al. 2020

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This paper reports a general electrospinning method to prepare various metal phosphide/carbon nanofibers composite for electrochemical hydrogen evolution reaction (HER) catalysts. An earth-abundant organic acid-phytic acid is successfully incorporated into a conventional electrospinning precursor as the phosphorus source, and continuous nanofibers can be obtained through spinning. After heat treatment, metal phosphide/carbon composite nanofibers can be obtained, with fine phosphide nanoparticles well dispersed on the surface of an interconnected carbon backbone network. Such fibrous structures offer fast charge transfer pathways and enlarged active surface area, which are beneficial for electrocatalysts. As a result, enhance HER catalytic activity can be achieved.

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Uniform NiFe phosphide nanosheets arrays on carbon cloth as high-performance oxygen evolution catalysts

Cited by 22 publications

References 45 publications

A Unique NiOOH@FeOOH Heteroarchitecture for Enhanced Oxygen Evolution in Saline Water

A Unique NiOOH@FeOOH Heteroarchitecture for Enhanced Oxygen Evolution in Saline Water

Phosphorus‐Based Electrocatalysts: Black Phosphorus, Metal Phosphides, and Phosphates

Electrospinning metal Phosphide/Carbon nanofibers from Phytic Acid for hydrogen evolution reaction catalysts

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