Superhydrophilic 3D peony flower-like Mo-doped Ni2S3@NiFe LDH heterostructure electrocatalyst for accelerating water splitting

Feng, Xiang; Shi, Yanlong; Shi, Junqin; Líu, Hao; Hu, Zhongai

doi:10.1016/j.ijhydene.2020.11.018

Cited by 68 publications

(24 citation statements)

References 40 publications

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“…29 The foreign transition-metal ions contribute to modifying the electronic structure and realigning valence electrons to facilitate electron transfer. Especially, Mo-doped transition-metal compounds have been reported to serve as electrocatalysts for overall water splitting, 30,31 where the Mo doping was proved to effectively modulate the electron densities, bringing improved electroactive sites and an increased intrinsic activity of each site. Thus, the Mo doping may accelerate the Faradaic redox reactions and improve the electrochemical properties of electrode materials.…”

Section: Introductionmentioning

confidence: 99%

Tailoring Mo-Doped NiCoP Grown on (Ni,Co)Se₂ Nanoarrays for Asymmetric Supercapacitor with Enhanced Electrochemical Performance

Zong

Zhan

et al. 2021

ACS Appl. Energy Mater.

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Both composition and nanostructure play vital roles in the electrochemical properties of the transition-metal compounds. Rational elemental doping and nanostructure design could accelerate the Faradaic redox reaction kinetics and increase the electroactive sites. Herein, we have successfully synthesized core−shell structure nanoarrays where (Ni,Co)Se 2 nanowires directly grow on activated carbon cloth as the conductive core to support an Mo-doped NiCoP nanosheet shell. This hierarchical nanoarray electrode exhibits a high areal capacity of 1.99 C/cm 2 at 2 mA/cm 2 (a gravimetric specific capacity of 797 C/g) and notable rate capability (1.54 C/cm 2 at 50 mA/cm 2 ). The asymmetric supercapacitor device assembled using (Ni,Co)Se 2 @Mo-NiCoP as the cathode and activated carbon as the anode exhibits a high energy density of 33.7 Wh/kg at a power density of 800 W/kg.

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Section: Introductionmentioning

confidence: 99%

Tailoring Mo-Doped NiCoP Grown on (Ni,Co)Se₂ Nanoarrays for Asymmetric Supercapacitor with Enhanced Electrochemical Performance

Zong

Zhan

et al. 2021

ACS Appl. Energy Mater.

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“…The porous structure, rich defects, and uniform doping make this MNF‐LDH‐laser metastructure attractive for catalytic reactions. Hierarchical LDH structures have been synthesized by solvothermal methods previously, [ 26,27 ] however, the obvious differences in sizes, porosity, defects, and dopants make the LaSiN method stand out from the traditional solvothermal routes. We also performed the control experiment using Fe 3+ ions dissolved in the precursor solvent instead of using iron target (Figure S11, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Mesoporous LDH Metastructure from Multiscale Assembly of Defective Nanodomains by Laser Shock for Oxygen Evolution Reaction

Jiang

Cheng

2022

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Laser is a powerful tool for the synthesis of nanomaterials. The intensive laser pulses delivered to materials within nanoseconds allow the formation of novel structures that are inaccessible for conventional methods. Layered double hydroxide (LDH) nanostructures with high porosity, suitable dopants, and rich defects are desirable for catalysts, however, tremendously difficult in a one‐pot synthesis. Here it is found that confined laser shock in solvent leads to the formation of nanoreactors which guide the assembly of multiscale LDH building units, larger nanosheets as frame and smaller nanodomains as building blocks. These nanodomains have rich vacancy defects and are interlocked in a high packed density of 1013 cm−2, leaving rich mesopores across the nanosheets and coral‐like morphology. Like the natural coral reef that has multiscale structure to accommodate different marine organisms, the coral‐like LDH metastructure provides large surface area and rich active sites for the interaction with guest molecules. Benefiting from the multiscale porous structure and rational dopant, this LDH catalyst exhibits a low overpotential of 220 mV at 10 mA cm−2 for oxygen evolution reaction (OER), standing as one of the best LDH catalysts to date.

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“…31,32 Nickel sulfide (Ni 3 S 2 ) displays high catalytic activity and excellent electrical conductivity, and makes the electrical contact between the catalyst and conductive substrate closer, which is beneficial for the electrocatalytic dynamics and durability and thus can be used as a desirable conductive substrate. [33][34][35][36] Based on the above views, we coupled the defective, ultrathin V-NiFe LDH nanosheets with Ni 3 S 2 nanosheets, integrated three effective strategies into a catalyst, and designed a wonderful 3D nanosized spherical V-NiFe LDH@Ni 3 S 2 electrocatalyst. Electrochemical results show that V-NiFe LDH@Ni 3 S 2 exhibits prominent electrocatalytic properties and structural stability for the OER.…”

Section: Introductionmentioning

confidence: 99%

Spherical V-doped nickel–iron LDH decorated on Ni₃S₂ as a high-efficiency electrocatalyst for the oxygen evolution reaction

et al. 2022

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Superhydrophilic 3D peony flower-like Mo-doped Ni2S3@NiFe LDH heterostructure electrocatalyst for accelerating water splitting

Cited by 68 publications

References 40 publications

Tailoring Mo-Doped NiCoP Grown on (Ni,Co)Se₂ Nanoarrays for Asymmetric Supercapacitor with Enhanced Electrochemical Performance

Tailoring Mo-Doped NiCoP Grown on (Ni,Co)Se₂ Nanoarrays for Asymmetric Supercapacitor with Enhanced Electrochemical Performance

Mesoporous LDH Metastructure from Multiscale Assembly of Defective Nanodomains by Laser Shock for Oxygen Evolution Reaction

Spherical V-doped nickel–iron LDH decorated on Ni₃S₂ as a high-efficiency electrocatalyst for the oxygen evolution reaction

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Superhydrophilic 3D peony flower-like Mo-doped Ni2S3@NiFe LDH heterostructure electrocatalyst for accelerating water splitting

Cited by 68 publications

References 40 publications

Tailoring Mo-Doped NiCoP Grown on (Ni,Co)Se2 Nanoarrays for Asymmetric Supercapacitor with Enhanced Electrochemical Performance

Tailoring Mo-Doped NiCoP Grown on (Ni,Co)Se2 Nanoarrays for Asymmetric Supercapacitor with Enhanced Electrochemical Performance

Mesoporous LDH Metastructure from Multiscale Assembly of Defective Nanodomains by Laser Shock for Oxygen Evolution Reaction

Spherical V-doped nickel–iron LDH decorated on Ni3S2 as a high-efficiency electrocatalyst for the oxygen evolution reaction

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Product

Resources

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Tailoring Mo-Doped NiCoP Grown on (Ni,Co)Se₂ Nanoarrays for Asymmetric Supercapacitor with Enhanced Electrochemical Performance

Tailoring Mo-Doped NiCoP Grown on (Ni,Co)Se₂ Nanoarrays for Asymmetric Supercapacitor with Enhanced Electrochemical Performance

Spherical V-doped nickel–iron LDH decorated on Ni₃S₂ as a high-efficiency electrocatalyst for the oxygen evolution reaction