Engineering edge sites based on NiS2/MoS2/CNTs heterojunction catalyst for overall water splitting

Li, Guang‐Lan; Miao, Yingying; Qiao, Xiang-Yue; Wang, Tianyu; Deng, Feiqi

doi:10.1016/j.apsusc.2022.156309

Cited by 21 publications

(4 citation statements)

References 60 publications

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“…Among them, NiFe-LDH/MoS 2 –Ni 3 S 2 /NF affords a cell voltage of 1.50 V to achieve a current density of 10 mA cm –2 in comparison to those of MoS 2 –Ni 3 S 2 /NF (1.55 V), Ni 3 S 2 /NF (1.73 V), NiFe-LDH/NF (1.69 V), and RuO 2 /NF||Pt–C/NF (1.66 V), indicating that NiFe-LDH/MoS 2 –Ni 3 S 2 /NF has excellent overall water splitting performance, as shown in Figure b. Compared with other related overall water splitting electrocatalysts reported in recent years (see Figure c and Table ), the cell voltage of NiFe-LDH/MoS 2 –Ni 3 S 2 /NF is superior to those of numerous other reported transition metal NiFe-LDH and MoS 2 –Ni 3 S 2 -based as well as RuO 2 ||Pt–C electrocatalysts. − …”

Section: Results and Discussionmentioning

confidence: 99%

Construction of an Advanced NiFe-LDH/MoS₂–Ni₃S₂/NF Heterostructure Catalyst toward Efficient Electrocatalytic Overall Water Splitting

et al. 2023

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Developing high-efficiency, low-cost, and earth-abundant electrocatalysts toward the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) is highly desirable for boosting the energy efficiency of water splitting. Herein, we adopted an interfacial engineering strategy to enhance the overall water splitting (OWS) activity via constructing a bifunctional OER/HER electrocatalyst combining MoS 2 −Ni 3 S 2 with NiFe layered double hydroxide (NiFe-LDH) on a nickel foam substrate. The NiFe-LDH/MoS 2 −Ni 3 S 2 /NF electrocatalyst delivers superior OER/HER activity and stability, such as low overpotentials (220 and 79 mV for OER and HER at current densities of 50 and 10 mA cm −2 , respectively) and a low Tafel slope. This excellent electrocatalytic performance mainly benefits from the electronic structure modulation and synergistic effects between NiFe-LDH and MoS 2 −Ni 3 S 2 , which provides a high electrochemical activity area, more active sites, and strong electron interaction. Furthermore, the assembly of NiFe-LDH/MoS 2 −Ni 3 S 2 /NF into a two-electrode system only requires an ultra-low cell voltage of 1.50 V at a current density of 10 mA cm −2 and exhibits outstanding stability with a decay of current density of only 2.11% @50 mA cm −2 after 50 h, which is far superior to numerous other reported transition metal NiFe-LDH and MoS 2 −Ni 3 S 2 -based as well as RuO 2 ||Pt−C electrocatalysts. This research highlights the rational design of heterostructures to efficiently advance electrocatalysis for water splitting applications.

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Section: Results and Discussionmentioning

confidence: 99%

Construction of an Advanced NiFe-LDH/MoS₂–Ni₃S₂/NF Heterostructure Catalyst toward Efficient Electrocatalytic Overall Water Splitting

et al. 2023

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“…26 Defected MoS 2 nanosheets show enhanced catalytic activity due to having abundant exposed edges, which ensure the detection of small molecules such as hydrogen and oxygen. 27,28 Therefore, the development of 2D materials with active edge sites is critical to increase the performance of the material. One of the most recent approaches used to create active sites is the formation of holes in the basal plane of 2D materials.…”

Section: Introductionmentioning

confidence: 99%

Holey MoS₂-based electrochemical sensors for simultaneous dopamine and uric acid detection

Ipekci

2023

Anal. Methods

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“…[19] Composite nanoreactors with transition metal atoms and carbon substrates have been successfully constructed by doping carbonized silk with transition metal atoms such as Co and Ni [20]. The firstprinciple calculation shows that the modification of metal Co and Ni atoms can lead to the redistribution of the surface charge of carbon materials, and make carbon atoms around Co and Ni atoms appear to be electron-deficient, which significantly enhances the electron transfer from Co and Ni nanoparticles to carbon carriers [21]. The effect of interfacial charge rearrangement of C nanomaterials induced by metal Co and Ni atoms doping on HER catalytic performance was investigated.…”

Section: Introductionmentioning

confidence: 99%

Highly Effective Electrochemical Water Splitting with Enhanced Electron Transfer between Ni2Co Layered Double Hydroxide Nanosheets Dispersed on Carbon Substrate

Wan,

Tang,

Dai

et al. 2023

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A reasonable design of nickel-based catalysts is key to efficient and sustainable energy conversion. For electrocatalytic materials in alkaline electrolytes, however, atomic-level control of the active sites is essential. Moreover, the well-defined surface structure contributes to a deeper understanding of the catalytic mechanism. Here, we report the loading of defective nickel–cobalt layered double hydroxide nanosheets (Ni2Co-LDH@C) after carbonization of silk. Under the precise regulation of the local coordination environment of the catalytic active site and the presence of defects, Ni2Co-LDH@C can provide an ultra-low overpotential of 164.8 mV for hydrogen evolution reactions (HERs) at 10 mA cm−2, exceeding that of commercial Pt/C catalysts. Density functional theory calculations show that Ni2Co-LDH@C optimizes the adsorption energy of the intermediate and promotes the O-O coupling of the active site in the oxygen evolution reaction. When using Ni2Co-LDH@Cs as cathodes and anodes to achieve overall water splitting, a low voltage of 1.63 V is required to achieve a current density of 10 mA cm−2. As an ideal model, Ni2Co-LDH@C has excellent water splitting properties and has the potential to develop water–alkali electrocatalysts.

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Engineering edge sites based on NiS2/MoS2/CNTs heterojunction catalyst for overall water splitting

Cited by 21 publications

References 60 publications

Construction of an Advanced NiFe-LDH/MoS₂–Ni₃S₂/NF Heterostructure Catalyst toward Efficient Electrocatalytic Overall Water Splitting

Construction of an Advanced NiFe-LDH/MoS₂–Ni₃S₂/NF Heterostructure Catalyst toward Efficient Electrocatalytic Overall Water Splitting

Holey MoS₂-based electrochemical sensors for simultaneous dopamine and uric acid detection

Highly Effective Electrochemical Water Splitting with Enhanced Electron Transfer between Ni2Co Layered Double Hydroxide Nanosheets Dispersed on Carbon Substrate

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Engineering edge sites based on NiS2/MoS2/CNTs heterojunction catalyst for overall water splitting

Cited by 21 publications

References 60 publications

Construction of an Advanced NiFe-LDH/MoS2–Ni3S2/NF Heterostructure Catalyst toward Efficient Electrocatalytic Overall Water Splitting

Construction of an Advanced NiFe-LDH/MoS2–Ni3S2/NF Heterostructure Catalyst toward Efficient Electrocatalytic Overall Water Splitting

Holey MoS2-based electrochemical sensors for simultaneous dopamine and uric acid detection

Highly Effective Electrochemical Water Splitting with Enhanced Electron Transfer between Ni2Co Layered Double Hydroxide Nanosheets Dispersed on Carbon Substrate

Contact Info

Product

Resources

About

Construction of an Advanced NiFe-LDH/MoS₂–Ni₃S₂/NF Heterostructure Catalyst toward Efficient Electrocatalytic Overall Water Splitting

Construction of an Advanced NiFe-LDH/MoS₂–Ni₃S₂/NF Heterostructure Catalyst toward Efficient Electrocatalytic Overall Water Splitting

Holey MoS₂-based electrochemical sensors for simultaneous dopamine and uric acid detection