Amorphous NiFe layered double hydroxide nanosheets decorated on 3D nickel phosphide nanoarrays: a hierarchical core–shell electrocatalyst for efficient oxygen evolution

Luo, Yu; Zhou, Haiqing; Mishra, Ishwar Kumar; Luo, Dan; Fang, Yu; Yu, Ying; Chen, Shuo; Ren, Zhifeng

doi:10.1039/c8ta02967a

Cited by 188 publications

(105 citation statements)

References 51 publications

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“…The strong electronic interactions between the NiFeP and NiFe‐OH would have greatly improved the electrocatalytic activity. [ 100,171 ]…”

Section: Phosphidesmentioning

confidence: 99%

“…[ 99 ] Likewise, the nickel phosphide assembled on NF was soaked in a Co‐ink and then was thermally phosphorized, leading to the formation of hierarchical CoP/Ni 5 P 4 /CoP electrode. [ 161 ] To obtain the core/shell hydroxide@phosphide structure, NiFe hydroxide nanosheet layer was grown on the phosphide by electrodeposition [ 100,171 ] or hydrothermal procedure. [ 211 ] By conducting phosphorization and sulphidation/carbonization procedure simultaneously, phophide/sulfide and phophide/carbide can be synthesized.…”

Section: Phosphidesmentioning

confidence: 99%

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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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“…The strong electronic interactions between the NiFeP and NiFe‐OH would have greatly improved the electrocatalytic activity. [ 100,171 ]…”

Section: Phosphidesmentioning

confidence: 99%

Section: Phosphidesmentioning

confidence: 99%

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

Wang

2020

Adv Materials Inter

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“…Oxygen evolution reaction (OER) is the crucial reaction that provides protons and electrons in many energy storage and conversion systems. [1][2][3][4][5][6][7][8] However, the sluggish kinetic process of OER results in a high overpotential to deliver a desired current density because of its multi-step electron transfer process. [9][10][11][12][13][14] Precious-metal oxides such as IrO 2 and RuO 2 are efficient OER electrocatalysts, but their low abundance and high cost prohibit large-scale applications.…”

Section: Introductionmentioning

confidence: 99%

Boosting the electrocatalytic performance of NiFe layered double hydroxides for the oxygen evolution reaction by exposing the highly active edge plane (012)

Zhao

Shi

et al. 2021

Chem. Sci.

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“…Hydrogen (H 2 ) is considered as one of the renewable zero‐carbon energy sources for fossil fuels . Electrochemical water splitting has been widely regarded as a promising and sustainable method to convert electric energy into H 2 .…”

Section: Introductionmentioning

confidence: 99%

A Universal Strategy to Metal Wavy Nanowires for Efficient Electrochemical Water Splitting at pH‐Universal Conditions

Yang

Shao

et al. 2018

Adv Funct Materials

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While overall water splitting is considered as one of the most efficient approaches for sustainable oxygen and hydrogen generations, the design of robust electrocatalysts that are active and stable for overall water splitting in pH-universal conditions is still a significant challenge. Herein, a universal strategy for a class of metal wavy nanowires (NWs) for the enhanced electrocatalysis is reported. Benefiting from the structural features of ultrathin nature and numbers of defects, the obtained NWs generally exhibit attractive performances in oxygen evolution reaction (OER) and hydrogen evolution reaction at pH-universal conditions. More significantly, the optimized Ru O 2 NWs-Ir NWs electrolyzer shows superior performance for overall water splitting with only cell voltages of 1.50 and 1.47 V in 0.05 and 0.5 m H 2 SO 4 and 1.56 and 1.49 V in 0.1and 1 m KOH at 10 mA cm −2 , much lower than those of the Ir/C-Pt/C electrolyzer. First-principles calculations reveals that the appearance of Ru-atom point defects on RuO 2 (200) surface will lower the OER overpotential during which the adsorption free energies of OER intermediates are weakened due to the right-shift of d-band center. The RuO 2 NWs-Ir NWs electrolyzer also exhibits excellent durability in long-term electrolysis, showing exciting prospect for water splitting in different pH electrolytes.

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Amorphous NiFe layered double hydroxide nanosheets decorated on 3D nickel phosphide nanoarrays: a hierarchical core–shell electrocatalyst for efficient oxygen evolution

Abstract: Amorphous NiFe LDH nanosheets were decorated on nickel phosphide nanoarrays to form a 3D core–shell electrocatalyst for efficient water oxidation.

Cited by 188 publications

References 51 publications

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

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

Boosting the electrocatalytic performance of NiFe layered double hydroxides for the oxygen evolution reaction by exposing the highly active edge plane (012)

A Universal Strategy to Metal Wavy Nanowires for Efficient Electrochemical Water Splitting at pH‐Universal Conditions

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