Tuning the coupling interface of ultrathin Ni<sub>3</sub>S<sub>2</sub>@NiV-LDH heterogeneous nanosheet electrocatalysts for improved overall water splitting

Liu, Qianqian; Huang, Jianfeng; Zhao, Yajuan; Cao, Liyun; Li, Kang; Zhang, Ning; Yang, Dan; Li, Feng; Feng, Liangliang

doi:10.1039/c9nr00658c

Cited by 153 publications

(86 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nickel‐based materials such as NiS, NiS 2 , and Ni 3 S 2 have attracted the interest of researchers for electrocatalysis [26–28] . In the structure of Ni 3 S 2 , there are abundant Ni–Ni and Ni–S sites, which have a high Gibbs free energy for hydrogen adsorption, limit the release of H*, and inhibit the production of hydrogen [29,30] .…”

Section: Introductionmentioning

confidence: 99%

Rational Design and Controlled Synthesis of V‐Doped Ni₃S₂/Ni_xP_y Heterostructured Nanosheets for the Hydrogen Evolution Reaction

Wang

Zhao

et al. 2020

Chemistry A European J

View full text Add to dashboard Cite

Rational construction of high‐efficiency and low‐cost catalysts is one of the most promising ways to produce hydrogen but remains a huge challenge. Herein, interface engineering and heteroatom doping were used to synthesize V‐doped sulfide/phosphide heterostructures on nickel foam (V‐Ni3S2/NixPy/NF) by phosphating treatment at low temperature. The incorporation of V can adjust the electronic structure of Ni3S2, expose more active sites, and protect the 3D structure of Ni foam from damage. Meanwhile, the heterogeneous interface formed between Ni3S2 and NixPy can provide abundant active sites and accelerate electron transfer. As a result, the V‐Ni3S2/NixPy/NF nanosheet catalyst exhibits outstanding activity in the hydrogen evolution reaction (HER) with an extremely low overpotential of 90 mV at a current density of 10 mA cm−2 and stable durability in alkaline solution, which exceeds those most of the previously reported Ni‐based materials. This work shows that rational design by interfacial engineering and metal‐atom incorporation has a significant influence for efficient hydrogen evolution.

show abstract

Section: Introductionmentioning

confidence: 99%

Rational Design and Controlled Synthesis of V‐Doped Ni₃S₂/Ni_xP_y Heterostructured Nanosheets for the Hydrogen Evolution Reaction

Wang

Zhao

et al. 2020

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…[6][7][8][9] Among these catalysts, nickel-based compounds, e. g. nickel sulfides, have unique configuration and high conductivity, of which abundant NiÀ S and NiÀ Ni bonds can facilitate the production of the intermediate (OOH*) for OER and the adsorbed hydrogen (H*) converted to H 2 for HER, therefore, are employed as promising water splitting electrocatalysts. [10][11][12][13][14][15][16][17] Nickel sulfide with suitable element doping can modulate its electronic and surface structure, hence, significantly enhancing the electrocatalytic performance for OER and (or) HER. Zn, [18] V, [19] Sn, [20] N, [21] Mo, [22] and Fe [23][24][25][26][27][28] elements have been doped in nickel sulfide lattices for promoted OER, HER or overall water splitting electrocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Wang

Zhang

et al. 2019

ChemElectroChem

View full text Add to dashboard Cite

It is critical to develop a highly effective and economical electrocatalyst to lower the energy losses for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). In this work, Fe‐doped Ni3S2 nanowires with diameters of ca. 17 nm and lengths of 1.4∼2 μm are synthesized on Ni foam through a one‐step solvothermal route for alkaline water splitting, which display notable active and excellent durability for both OER and HER under high current densities. The optimal Fe13.7%‐Ni3S2 nanowires electrode can attain 200 mA cm−2 at a fairly low overpotential of 223 mV, and 500 mA cm−2 at 245 mV toward OER. Furthermore, it yields a considerable low overpotential of 109 mV to garner 10 mA cm−2, and 246 mV for 500 mA cm−2 toward HER. The incorporation of iron simultaneously modifies the electronic structure and morphology of Ni3S2, which not only enhances the conductivity but also generates abundant active edge sites. The slight surface‐restricted oxidation of nanowires in a strongly basic electrolyte in situ generates a large number of interfaces, which enables the reactivity and durability for both OER and HER. Accordingly, an alkaline water electrolyzer with two Fe13.7%‐Ni3S2 electrodes only requires a low cell voltage of 1.53 V to achieve 10 mA cm−2, and 1.95 V to 500 mA cm−2 with striking stability. The as‐prepared Fe‐doped Ni3S2 nanowires can be potentially utilized for actual water electrolysis under high current densities.

show abstract

“…Accordingly, for the V 2p spectra in Figures 4C and S2c, the peak at 516.9 eV could be assigned to V 2p 3/2 and the peak at 524.5 eV could be assigned to V 2p 1/2 , respectively. 32,33 Besides, the Ni 2p spectra show two main peaks located at 856.0 eV (Ni 2p 3/2 ) and 873.6 eV (Ni 2p 1/2 ) together with two satellite peaks located at 861.7 and 879.7 eV ( Figures 4D and S2d), which in accordance with the Ni 2+. 34,35 Figures 4E and S2e shows the Na 1s spectra of six electrodes, the signal of Na 1s can be seen only when the amount of NaCl is large, indicating that there are few Na elements on the surface of the materials.…”

Section: Materials Characterizationmentioning

confidence: 62%

Oxygen‐vacancy‐rich hydrated bimetallic chloride for supercapacitor cathode with remarkable enhanced performance

2020

View full text Add to dashboard Cite

Summary In this study, a series of nickel/vanadium composites were acquired via a simple in situ growth strategy with the sodium chloride as a regulator. The phase, component, and electrochemical energy storage behavior of the as‐prepared electrodes were investigated. Thanks to the addition of sodium chloride for the accession of oxygen vacancy, the prepared composite electrodes show excellent supercapacitor behavior. The resultant NVC‐1.8Ov electrode demonstrates a impressive specific capacitance of 9.41 F cm−2 at a current of 10 mA cm−2, which is about 1.5 times than the NVC electrode. After 5000 charge‐discharge cycles under a current of 40 mA cm−2, the retained 75.7% of its initial capacitance indicate a good cyclic stability. In addition, the NVC‐1.8Ov and activated carbon (AC) was used to assemble NVC‐1.8Ov//AC asymmetric supercapacitor, which deliver a maximum energy density of 0.471 mWh cm−2 at a power density of 9.319 mW cm−2. This work provides a new and simple strategy for the preparation of high specific capacitance of asymmetric supercapacitor positive electrode.

show abstract

Tuning the coupling interface of ultrathin Ni₃S₂@NiV-LDH heterogeneous nanosheet electrocatalysts for improved overall water splitting

Abstract: Interface engineering is an effective approach to achieve abundant surface catalytic active sites and strong electronic interactions among active materials of heterostructured catalysts.

Cited by 153 publications

References 49 publications

Rational Design and Controlled Synthesis of V‐Doped Ni₃S₂/Ni_xP_y Heterostructured Nanosheets for the Hydrogen Evolution Reaction

Rational Design and Controlled Synthesis of V‐Doped Ni₃S₂/Ni_xP_y Heterostructured Nanosheets for the Hydrogen Evolution Reaction

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Oxygen‐vacancy‐rich hydrated bimetallic chloride for supercapacitor cathode with remarkable enhanced performance

Contact Info

Product

Resources

About

Tuning the coupling interface of ultrathin Ni3S2@NiV-LDH heterogeneous nanosheet electrocatalysts for improved overall water splitting

Abstract: Interface engineering is an effective approach to achieve abundant surface catalytic active sites and strong electronic interactions among active materials of heterostructured catalysts.

Cited by 153 publications

References 49 publications

Rational Design and Controlled Synthesis of V‐Doped Ni3S2/NixPy Heterostructured Nanosheets for the Hydrogen Evolution Reaction

Rational Design and Controlled Synthesis of V‐Doped Ni3S2/NixPy Heterostructured Nanosheets for the Hydrogen Evolution Reaction

Fe‐Doped Ni3S2 Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Oxygen‐vacancy‐rich hydrated bimetallic chloride for supercapacitor cathode with remarkable enhanced performance

Contact Info

Product

Resources

About

Tuning the coupling interface of ultrathin Ni₃S₂@NiV-LDH heterogeneous nanosheet electrocatalysts for improved overall water splitting

Rational Design and Controlled Synthesis of V‐Doped Ni₃S₂/Ni_xP_y Heterostructured Nanosheets for the Hydrogen Evolution Reaction

Rational Design and Controlled Synthesis of V‐Doped Ni₃S₂/Ni_xP_y Heterostructured Nanosheets for the Hydrogen Evolution Reaction

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting