Interfacing Epitaxial Dinickel Phosphide to 2D Nickel Thiophosphate Nanosheets for Boosting Electrocatalytic Water Splitting

Liang, Qinghua; Zhong, Lixiang; Du, Chunyu; Luo, Yubo; Zhao, Jianwei; Zheng, Yun; Xu, Jianwei; Ma, Jianmin; Liu, Chuntai; Li, Shuzhou; Yan, Qingyu

doi:10.1021/acsnano.9b02510

Cited by 179 publications

(127 citation statements)

References 59 publications

(108 reference statements)

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“…The binding energy of N 1s in W 2 N and W 2 N/WC is 397.8 and 398.5 eV, respectively, which are the typical peaks of the metal nitride (Figure b). The slightly lower (≈0.7 eV) binding energy of N 1s in the W 2 N/WC heterostructure is also related to the charge accumulation in W 2 N, further confirming the formation of the W 2 N/WC interface. Two types of species were observed: C–C (284.6 eV) and C–W (283.4 eV), in the XPS of WO 3 /W 2 N and W 2 N, as shown in Figure S6 (Supporting Information).…”

mentioning

confidence: 57%

Interfacial Engineering of W₂N/WC Heterostructures Derived from Solid‐State Synthesis: A Highly Efficient Trifunctional Electrocatalyst for ORR, OER, and HER

et al. 2019

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To meet the practical demand of overall water splitting and regenerative metal–air batteries, highly efficient, low‐cost, and durable electrocatalysts for the oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) are required to displace noble metal catalysts. In this work, a facile solid‐state synthesis strategy is developed to construct the interfacial engineering of W2N/WC heterostructures, in which abundant interfaces are formed. Under high temperature (800 °C), volatile CNx species from dicyanodiamide are trapped by WO3 nanorods, followed by simultaneous nitridation and carbonization, to form W2N/WC heterostructure catalysts. The resultant W2N/WC heterostructure catalysts exhibit an efficient and stable electrocatalytic performance toward the ORR, OER, and HER, including a half‐wave potential of 0.81 V (ORR) and a low overpotential at 10 mA cm−2 for the OER (320 mV) and HER (148.5 mV). Furthermore, a W2N/WC‐based Zn–air battery shows outstanding high power density (172 mW cm−2). Density functional theory and X‐ray absorption fine structure analysis computations reveal that W2N/WC interfaces synergistically facilitate transport and separation of charge, thus accelerating the electrochemical ORR, OER, and HER. This work paves a novel avenue for constructing efficient and low‐cost electrocatalysts for electrochemical energy devices.

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confidence: 57%

Interfacial Engineering of W₂N/WC Heterostructures Derived from Solid‐State Synthesis: A Highly Efficient Trifunctional Electrocatalyst for ORR, OER, and HER

et al. 2019

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“…The unique 3D hierarchical nanostructures favored the exposure of in situ generated NiOOH species (active sites) during the OER process. [ 65 ] Other 3D nanostructured phosphide, for example, flower‐like NiFe‐P, [ 89 ] 3D hierarchical NiMoP NSs/CNTs, [ 90 ] and CoFe‐P, [ 91 ] nest‐like NiCoP, [ 92 ] have been successfully designed as a group of high‐performance electrocatalysts for HER and/or OER, further showing the benefits of 3D nanostructures.…”

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 metal element, the peaks of Co shift positively (≈0.3 eV) in CoSe@NMC compared in bimetal selenide (FeCoSe 2 @NMC), with 2p 3/2 and 2p 1/2 observed at 781.5 and 797.4 eV respectively (Figure 2e), [ 33,40 ] and the slight positive shift (0.2 eV) also occurred in Fe 2p in Figure 2f comparing FeCoSe 2 @NMC with FeSe@NMC, [ 31,38 ] suggesting single metal tending to donate electrons and increase oxidation state than polymetal in the composites. Briefly, the increased pyridinic N, electrophilic O with series MSe doping and enhanced interactivity between selenides and NMC would play adsorbing or desorpting oxygen intermediate species and promote active sites increasing, which will become the key for the synergistically promoted ORR/OER bifunctional performances, [ 30,33,41 ] and the differences of chemical composition and coordination environment for the elements from FeSe@NMC to CoSe@NMC would cause different performance in electrochemistry.…”

Section: Resultsmentioning

confidence: 99%

Boosting the Performance of Nitrogen‐Doped Mesoporous Carbon Oxygen Electrode with Ultrathin 2D Iron/Cobalt Selenides

Hong

Wang

et al. 2020

Adv Materials Inter

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Interfacing Epitaxial Dinickel Phosphide to 2D Nickel Thiophosphate Nanosheets for Boosting Electrocatalytic Water Splitting

Abstract: Interfacing epitaxial dinickel phosphide to 2D nickel thiophosphate nanosheets for boosting electrocatalytic water splitting

Cited by 179 publications

References 59 publications

Interfacial Engineering of W₂N/WC Heterostructures Derived from Solid‐State Synthesis: A Highly Efficient Trifunctional Electrocatalyst for ORR, OER, and HER

Interfacial Engineering of W₂N/WC Heterostructures Derived from Solid‐State Synthesis: A Highly Efficient Trifunctional Electrocatalyst for ORR, OER, and HER

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

Boosting the Performance of Nitrogen‐Doped Mesoporous Carbon Oxygen Electrode with Ultrathin 2D Iron/Cobalt Selenides

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Interfacing Epitaxial Dinickel Phosphide to 2D Nickel Thiophosphate Nanosheets for Boosting Electrocatalytic Water Splitting

Abstract: Interfacing epitaxial dinickel phosphide to 2D nickel thiophosphate nanosheets for boosting electrocatalytic water splitting

Cited by 179 publications

References 59 publications

Interfacial Engineering of W2N/WC Heterostructures Derived from Solid‐State Synthesis: A Highly Efficient Trifunctional Electrocatalyst for ORR, OER, and HER

Interfacial Engineering of W2N/WC Heterostructures Derived from Solid‐State Synthesis: A Highly Efficient Trifunctional Electrocatalyst for ORR, OER, and HER

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

Boosting the Performance of Nitrogen‐Doped Mesoporous Carbon Oxygen Electrode with Ultrathin 2D Iron/Cobalt Selenides

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Interfacial Engineering of W₂N/WC Heterostructures Derived from Solid‐State Synthesis: A Highly Efficient Trifunctional Electrocatalyst for ORR, OER, and HER

Interfacial Engineering of W₂N/WC Heterostructures Derived from Solid‐State Synthesis: A Highly Efficient Trifunctional Electrocatalyst for ORR, OER, and HER