Three-dimensional-networked Ni2P/Ni3S2 heteronanoflake arrays for highly enhanced electrochemical overall-water-splitting activity

Zeng, Lingyou; Sun, Kaian; Wang, Xiaobo; Liu, Yunqi; Pan, Yuan; Cao, Dongwei; Yue, Song; Liu, Sihui; Liu, Chenguang

doi:10.1016/j.nanoen.2018.06.048

Cited by 377 publications

(184 citation statements)

References 77 publications

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“…As shown in Figure c and d, the BEs for S 2p 3/2 and S 2p 1/2 in Ni‐S−P NRs/NF exhibit a negative‐shift compared to that of Ni−S/NF, while the BEs of P 2p show a positive‐shift compared to that of Ni−P/NF. From the shift of binding energies, it can be deduced there is an interfacial charge redistribution, between Ni 3 S 2 and Ni 2 P, which could change the chemical properties of Ni 3 S 2 /Ni 2 P hybrid. Therefore, the catalytic activity of Ni‐S−P NRs/NF may improve.…”

Section: Resultsmentioning

confidence: 99%

“…To understand the synergistic effect between Ni 3 S 2 and Ni 2 P on the HER catalysis over a wide pH range, DFT simulations were carried out. In Liu and Pan's literature, they confirm the strong coupling interactions between Ni 3 S 2 and Ni 2 P to improve the electrochemical water splitting activity by DFT based on the VASP. On the basis of their work, here, we calculated the H and H 2 O adsorption on the Ni 3 S 2 /Ni 2 P interlayer by DFT using DMOL 3 code.…”

Section: Resultsmentioning

confidence: 99%

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One‐step Synthesis of Self‐standing Ni₃S₂/Ni₂P Heteronanorods on Nickel Foam for Efficient Electrocatalytic Hydrogen Evolution over a Wide pH Range

Zhou

et al. 2018

ChemCatChem

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The development of efficient, stable and low‐cost electrocatalysts for hydrogen evolution reaction (HER) through a facile strategy is undoubtedly vital to realize sustainable production of H2 in water splitting but still challenging. Herein, we present a one‐step approach, a simultaneous phosphorization and sulfurization thermal treatment of NF at low temperature, to direct grow Ni‐S−P heteronanorod arrays consisting of Ni3S2 and Ni2P on nickel foam (Ni‐S−P NRs/NF). Due to the direct growth, one‐dimensional structure and good conductivity of the catalyst hybrid, as well as the synergistic effect between Ni3S2 and Ni2P, the resultant Ni‐S−P NRs/NF exhibited excellent HER electrocatalytic activity over a wide pH range. Ni‐S−P NRs/NF shows an overpotential of 180, 148 and 292 mV to reach the current density of 100 mA cm−2 in 1.0 M KOH, 0.5 M H2SO4 and 1.0 M PBS solution, respectively. DFT theoretical calculations was further confirmed that the superior pH‐universal HER activity of Ni‐S−P NRs/NF is originated from the thermo‐neutral hydrogen adsorption free energy and the enhanced adsorption of water molecular by the Ni3S2/Ni2P heterostructure.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

One‐step Synthesis of Self‐standing Ni₃S₂/Ni₂P Heteronanorods on Nickel Foam for Efficient Electrocatalytic Hydrogen Evolution over a Wide pH Range

Zhou

et al. 2018

ChemCatChem

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“…[36] NiS/NiO microspheres showed a high specific capacitance (1063 F g À 1 at 2 A g À 1 ). For example, 3D-networked Ni 2 P/Ni 3 S 2 hetero-nanoflake arrays could be highly active electrocatalyst for OWS (80 mV for HER and 210 mV for OER at j 10 ).…”

Section: Introductionmentioning

confidence: 99%

Network‐Like Ni_1−xMo_x Nanosheets: Multi‐Functional Electrodes for Overall Water Splitting and Supercapacitor

et al. 2019

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Exploring efficient, abundant, cheap and stable materials for the electrolysis of water and supercapacitor is a challenging task. Here, Ni 1À x Mo x nanosheets are obtained on carbon cloth (CC), which can be multi-functional electrodes for electrochemical applications. Impressively, we find that the electrochemical abilities can be optimized by constructing network-like nanosheets and tuning the ratio of Ni and Mo in the alloy. To acquire a current density of 10 mA cm À 2 (j 10 ), Ni 0.75 Mo 0.25 /CC shows the lowest overpotentials (79 mV for hydrogen evolution reaction (HER) and 330 mV for oxygen evolution reaction (OER)) in 1 M KOH. Using Ni 0.75 Mo 0.25 /CC as both positive and negative poles, the cell only requires a potential of 1.74 V to reach j 10 and shows long-term durability. We further show that Ni 0.75 Mo 0.25 electrode exhibits a superior specific capacitance (422 F g À 1 at 1 A g À 1 ) and high capacitance retention (108.2 % after 1000 cycles) in 1 M KOH. The super-electrochemical performances of Ni 0.75 Mo 0.25 /CC is attributed to its high electronic conductivity, rich active sites, and large surface area. We believe that the Ni 0.75 Mo 0.25 /CC electrode with extraordinary electrochemical performances is a hopeful material for practical applications in both electrocatalysis and supercapacitors (SC).

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“…[2,3] However, electrolysis of water is a sluggish kinetics process, requiring electrocatalysts to promote the reaction. [4] Noble metal platinum (Pt) is recognized as the state-of-the-art catalyst for hydrogen evolution reaction (HER) in acid electrolyte, but the high cost and scarcity of this material severely limit its practical application. [5] Therefore, it is vital to explore low cost nonnoble-metal HER catalysts.…”

Section: Introductionmentioning

confidence: 99%

Ultrafine Cobalt‐Doped Iron Disulfide Nanoparticles in Ordered Mesoporous Carbon for Efficient Hydrogen Evolution

Huang

Liu

et al. 2019

ChemCatChem

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Designing earth‐abundant and efficient electrocatalysts to replace noble metals is highly desired for the hydrogen evolution reaction (HER) in water electrolysis. In this study, we constructed a self‐supported electrode with ordered mesoporous carbon film coated carbon fibers as a substrate and Co doped FeS2 nanoparticles as catalytically active phase for the HER. The ordered mesoporous carbon served as nanoreactor to restrict the growth of sulfide particles and prevent them from agglomeration, leading to the formation of ultrafine and highly dispersed sulfide of ∼5 nm, which enables the exposure of abundant active sites. Meanwhile, the Co atom doping enhanced the adsorption of the catalyst towards hydrogen, thereby improving its intrinsic activity. As a result, the electrode exhibited outstanding catalytic activity for the HER in acid electrolyte, manifesting a current density of 10 mA cm−2 at an overpotential of 92 mV and a small Tafel slope of 59 mV dec−1.

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Three-dimensional-networked Ni2P/Ni3S2 heteronanoflake arrays for highly enhanced electrochemical overall-water-splitting activity

Cited by 377 publications

References 77 publications

One‐step Synthesis of Self‐standing Ni₃S₂/Ni₂P Heteronanorods on Nickel Foam for Efficient Electrocatalytic Hydrogen Evolution over a Wide pH Range

One‐step Synthesis of Self‐standing Ni₃S₂/Ni₂P Heteronanorods on Nickel Foam for Efficient Electrocatalytic Hydrogen Evolution over a Wide pH Range

Network‐Like Ni_1−xMo_x Nanosheets: Multi‐Functional Electrodes for Overall Water Splitting and Supercapacitor

Ultrafine Cobalt‐Doped Iron Disulfide Nanoparticles in Ordered Mesoporous Carbon for Efficient Hydrogen Evolution

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Three-dimensional-networked Ni2P/Ni3S2 heteronanoflake arrays for highly enhanced electrochemical overall-water-splitting activity

Cited by 377 publications

References 77 publications

One‐step Synthesis of Self‐standing Ni3S2/Ni2P Heteronanorods on Nickel Foam for Efficient Electrocatalytic Hydrogen Evolution over a Wide pH Range

One‐step Synthesis of Self‐standing Ni3S2/Ni2P Heteronanorods on Nickel Foam for Efficient Electrocatalytic Hydrogen Evolution over a Wide pH Range

Network‐Like Ni1−xMox Nanosheets: Multi‐Functional Electrodes for Overall Water Splitting and Supercapacitor

Ultrafine Cobalt‐Doped Iron Disulfide Nanoparticles in Ordered Mesoporous Carbon for Efficient Hydrogen Evolution

Contact Info

Product

Resources

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One‐step Synthesis of Self‐standing Ni₃S₂/Ni₂P Heteronanorods on Nickel Foam for Efficient Electrocatalytic Hydrogen Evolution over a Wide pH Range

One‐step Synthesis of Self‐standing Ni₃S₂/Ni₂P Heteronanorods on Nickel Foam for Efficient Electrocatalytic Hydrogen Evolution over a Wide pH Range

Network‐Like Ni_1−xMo_x Nanosheets: Multi‐Functional Electrodes for Overall Water Splitting and Supercapacitor