Synergistic modulation of NiSe2 by doping with chromium and nitrogen for high-efficiency overall water splitting

Zheng, Xinyu; Sun, Shichao; Liu, Yu; Li, Di; Tian, Dan; Zhu, Jianjun; Jiang, Deli

doi:10.1016/j.apsusc.2022.155406

Cited by 15 publications

(14 citation statements)

References 47 publications

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“…The pretreatment of NF was in accordance with the previous literature . CoMoO 4 /NF was synthesized by a hydrothermal approach.…”

Section: Methodsmentioning

confidence: 99%

“…6−9 Therefore, developing HER and OER catalysts with ultrahigh efficiency and long-term robustness comparable to noble metal-based (e.g., Pt-based and Ru-based materials) electrocatalysts is a significant foundation for future renewable energy sources. 10−13 To date, considerable advancements have been made in designing non-noble transition metal-based electrocatalysts, such as transition metal sulfides, 14 phosphides, 15 nitrides, 16 selenides, 17 and oxides, 18 for HER, and transition metal oxides/hydroxides for OER. 19,20 However, the mismatched assembly of HER and OER catalysts within the same electrolyze leads to inferior catalytic performance for overall water splitting.…”

Section: ■ Introductionmentioning

confidence: 99%

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Synergistic Coupling of CoS₂/MoS₂ with Polypyrrole as a Highly Efficient and Robust Bifunctional Electrocatalyst for Water Splitting

Zhu,

Zheng,

et al. 2023

ACS Sustainable Chem. Eng.

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The construction of multicomponent coupled interfaces is crucial to designing highly effective and robust bifunctional electrocatalysts for water splitting. Transition metal sulfides are widely applied as efficient catalysts, but building strong coupling interfaces to enhance electrocatalytic properties remains a tremendous challenge. Here, we reported a distinctive heterostructure electrocatalyst consisting of conductive polypyrrole (PPy)-decorated cobalt−molybdenum sulfide (CoS 2 /MoS 2 ) nanosheets supported on nickel foam (CoS 2 /MoS 2 @PPy/NF) using a simple two-step hydrothermal and subsequent electrodeposition approach. Experimental results reveal that the interfacial coupling and synergistic effect between the conductive PPy and CoS 2 /MoS 2 with tunable electronic configuration are favorable for the charge transport and the electronic structure optimization of the coupled interface, where this integrated PPy can improve the conductivity and offer a guarantee for the durability of CoS 2 /MoS 2 @PPy/NF. Density functional theory (DFT) calculations verify that electronic interaction and charge redistribution in heterogeneous CoS 2 /MoS 2 can flexibly adjust the interfacial electronic configuration and lower the d-band center. Thanks to the advantages mentioned above, the obtained CoS 2 /MoS 2 @PPy/NF exhibits outstanding catalytic properties with the overpotentials of 46 mV for the hydrogen evolution reaction (HER) and 231 mV for the oxygen evolution reaction (OER) at 10 mA cm −2 . Remarkably, assembled CoS 2 /MoS 2 @PPy/NF || CoS 2 /MoS 2 @PPy/NF only acquires 1.52 V at 10 mA cm −2 in 1.0 M KOH with a durability of 50 h. This study affords a significant reference for designing bimetallic sulfide/polymer catalysts toward high-efficiency overall water splitting.

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“…The pretreatment of NF was in accordance with the previous literature . CoMoO 4 /NF was synthesized by a hydrothermal approach.…”

Section: Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Synergistic Coupling of CoS₂/MoS₂ with Polypyrrole as a Highly Efficient and Robust Bifunctional Electrocatalyst for Water Splitting

Zhu,

Zheng,

et al. 2023

ACS Sustainable Chem. Eng.

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“…To address the above issues, several strategies, such as designing nanoarchitecture, heteroatom doping, and integrating with conductive substrates, have been adopted to boost the catalytic properties of bare metal selenides. Recent studies have illustrated that coupling metal selenides with foreign atom-doped carbons is an available method to modulate the electron structure and promote the reaction kinetics .…”

Section: Introductionmentioning

confidence: 99%

Coupling NiSe₂ Nanoparticles with N-Doped Porous Carbon Enables Efficient and Durable Electrocatalytic Hydrogen Evolution Reaction at pH Values Ranging from 0 to 14

He,

Chen,

Meng

et al. 2023

ACS Appl. Nano Mater.

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Integrating metal-based species with a carbon matrix is a promising approach for fabricating inexpensive, durable, and efficient electrocatalysts. Herein, NiSe 2 -decorated and N-doped carbon polyhedra (NC) are prepared as electrocatalysts for hydrogen evolution reaction (HER) by a template-assisted approach. The optimal NC-NiSe 2 delivers extraordinary catalytic activities toward HER in a wide pH range, with overpotentials of 127 mV in 0.5 M H 2 SO 4 , 226 mV in 1 M PBS, and 205 mV in 1 M KOH to drive a current density of 10 mA cm −2 . In addition, this catalyst undergoes fast reaction kinetics via a Volmer−Heyrovsky mechanism and exhibits excelent long-term catalytic durability for 48 h in the full pH media. During electrocatalysis, when electrons pass through the NC matrix to the surface of NiSe 2 particles, water molecules at the active sites of NiSe2 are reduced, and then hydrogen is released. The excellent catalytic activity and durability mainly benefit from the hierarchically porous architecture as well as the synergistic interaction of NiSe 2 nanoparticles and NC matrix, which not only significantly boost the electronic conductivity and generate plentiful active sites but also guarantee the chemical and structural stabilities of NiSe 2 catalytic species. This work unravels deep insights into the exploration of carbonsupported metal chalcogenides as highly efficient HER electrocatalysts at full-pH values.

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“…However, the disadvantages of nickel-based selenide catalysts such as limited active sites and an unfavorable electronic structure still limit their industrial-scale applications. 23,24 To boost the intrinsic activity, what generally done is to introduce heteroatoms into the host materials to tune the electronic structure of catalysts and optimize the adsorption energy of intermediates. [25][26][27] Although TM-doped nickel selenide catalysts have been extensively reported, 28,29 the effects of noble metals on the performance of nickel selenide catalysts have been rarely studied.…”

Section: Introductionmentioning

confidence: 99%

Exceptional green hydrogen production performance of a ruthenium-modulated nickel selenide

Li,

Chen,

Zhang

et al. 2023

Nanoscale

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Synergistic modulation of NiSe2 by doping with chromium and nitrogen for high-efficiency overall water splitting

Cited by 15 publications

References 47 publications

Synergistic Coupling of CoS₂/MoS₂ with Polypyrrole as a Highly Efficient and Robust Bifunctional Electrocatalyst for Water Splitting

Synergistic Coupling of CoS₂/MoS₂ with Polypyrrole as a Highly Efficient and Robust Bifunctional Electrocatalyst for Water Splitting

Coupling NiSe₂ Nanoparticles with N-Doped Porous Carbon Enables Efficient and Durable Electrocatalytic Hydrogen Evolution Reaction at pH Values Ranging from 0 to 14

Exceptional green hydrogen production performance of a ruthenium-modulated nickel selenide

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Synergistic modulation of NiSe2 by doping with chromium and nitrogen for high-efficiency overall water splitting

Cited by 15 publications

References 47 publications

Synergistic Coupling of CoS2/MoS2 with Polypyrrole as a Highly Efficient and Robust Bifunctional Electrocatalyst for Water Splitting

Synergistic Coupling of CoS2/MoS2 with Polypyrrole as a Highly Efficient and Robust Bifunctional Electrocatalyst for Water Splitting

Coupling NiSe2 Nanoparticles with N-Doped Porous Carbon Enables Efficient and Durable Electrocatalytic Hydrogen Evolution Reaction at pH Values Ranging from 0 to 14

Exceptional green hydrogen production performance of a ruthenium-modulated nickel selenide

Contact Info

Product

Resources

About

Synergistic Coupling of CoS₂/MoS₂ with Polypyrrole as a Highly Efficient and Robust Bifunctional Electrocatalyst for Water Splitting

Synergistic Coupling of CoS₂/MoS₂ with Polypyrrole as a Highly Efficient and Robust Bifunctional Electrocatalyst for Water Splitting

Coupling NiSe₂ Nanoparticles with N-Doped Porous Carbon Enables Efficient and Durable Electrocatalytic Hydrogen Evolution Reaction at pH Values Ranging from 0 to 14