Interface engineering of NixSy@MoS2 heterostructured nanorods as high-efficient electrocatalysts for water splitting

Zhou, Qiusheng; Yao, Zijie; Yang, Jinfan; Zhang, Binghan; Qian, Liwei; Zhang, Sufeng

doi:10.1016/j.ijhydene.2021.08.116

Cited by 17 publications

(3 citation statements)

References 56 publications

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“…Currently, transition metal sulfides [11,12], (oxy)-hydroxides [13,14], nitrides [15,16], phosphides [15,17], and selenides [18], which enhance electrochemical performance and exhibit low overpotentials for water splitting, are preferable alternatives to noble metals. Among these electrocatalysts, nickel-sulfur compounds (NiS, NiS 2 , and Ni 3 S 2 ) [19] have been used as OER catalysts because of their high conductivity, large specific surface areas, and Ni-Ni bond network structures of nickel sulfide (Ni 3 S 2 ) [20].…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of P Doping and Mo-Ni-Based Heterostructure Electrocatalyst for Overall Water Splitting

et al. 2023

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Heterostructure construction and heteroatom doping are powerful strategies for enhancing the electrolytic efficiency of electrocatalysts for overall water splitting. Herein, we present a P-doped MoS2/Ni3S2 electrocatalyst on nickel foam (NF) prepared using a one-step hydrothermal method. The optimized P[0.9mM]-MoS2/Ni3S2@NF exhibits a cluster nanoflower-like morphology, which promotes the synergistic electrocatalytic effect of the heterostructures with abundant active centers, resulting in high catalytic activity for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline electrolyte. The electrode exhibits low overpotentials and Tafel slopes for the HER and OER. In addition, the catalyst electrode used in a two-electrode system for overall water splitting requires an ultralow voltage of 1.42 V at 10 mA·cm−2 and shows no obvious increase in current within 35 h, indicating excellent stability. Therefore, the combination of P doping and the heterostructure suggests a novel path to formulate high-performance electrocatalysts for overall water splitting.

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Section: Introductionmentioning

confidence: 99%

Synergistic Effect of P Doping and Mo-Ni-Based Heterostructure Electrocatalyst for Overall Water Splitting

et al. 2023

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“…The fundamental electrochemical process of OER and ORR plays an increasingly decisive role in reinforcing the conversion efficiency and power density of those energy storage technologies. [7,8] Due to the multistep electron transfer processes of the reversible oxygen reactions, the sluggish kinetics of ORR/OER inevitably results in inefficiency and an unideal lifetime of ZABs. [9,10] Accordingly, the robust activity and stability of a bifunctional oxygen electrocatalyst are extremely pivotal in declining overpotential during OER/ORR process.…”

Section: Introductionmentioning

confidence: 99%

In Situ Construction of Zinc‐Mediated Fe, N‐Codoped Hollow Carbon Nanocages with Boosted Oxygen Reduction for Zn–Air Batteries

Zhou,

Min,

Song

et al. 2023

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The rational design of bifunctional oxygen electrocatalysts with unique morphology and luxuriant porous structure is significant but challenging for accelerating the reaction kinetics of rechargeable Zn–air batteries (ZABs). Herein, zinc‐mediated Fe, N‐codoped carbon nanocages (Zn‐FeNCNs) are synthesized by pyrolyzing the polymerized iron‐doped polydopamine on the surface of the ZIF‐8 crystal polyhedron. The formation of the chelate between polydopamine and Fe serves as the covering layer to prevent the porous carbon nanocages from collapsing and boosts enough exposure and utilization of metal‐based active species during carbonization. Furthermore, both the theoretical calculation and experimental results show that the strong interaction between polyhedron and polydopamine facilitates the evolution of high‐activity zinc‐modulated FeNx sites and electron transportation and then stimulates the excellent bifunctional catalytic activity for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). As expected, the Zn–air battery with Zn‐FeNCNs as an air cathode displays a superior power density (256 mW cm−2) and a high specific capacity (813.3 mA h gZn−1), as well as long‐term stability over 1000 h. Besides, when this catalyst is applied to the solid‐state battery, the device exhibited outstanding mechanical stability and a high round‐trip efficiency under different bending angles.

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“…However, their high cost and scarcity limit their large-scale applications. Therefore, various materials, including graphene, carbon nanotubes [15], transition-metal dichalcogenides (TMDs) [16][17][18][19][20][21][22], transition metal oxides [23,24], transition-metal carbides (TMCs) [25][26][27][28][29], transition-metal phosphides [29][30][31][32], organic polymers [33,34], and nitrides, have been extensively investigated for replacing expensive Pt-based materials in HER.…”

Section: Introductionmentioning

confidence: 99%

Efficient Electrocatalysts for Hydrogen Evolution Reaction Using Heteroatom-Doped MXene Nanosheet

Tekalgne

Huu

Nguyen

et al. 2023

International Journal of Energy Research

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It is crucial to develop a low-cost hybrid electrocatalysts for hydrogen production. Due to their layered structure and strong electrical conductivity, MXene-based materials have been lately used more and more in energy storage devices. Herein, heteroatom- (boron and sulfur-) doped MXene (B, S-Ti3C2Tx) nanosheets are developed as efficient electrocatalysts for the hydrogen evolution reaction (HER). The synthesized B, S-Ti3C2Tx has a large surface area and exhibits excellent electrocatalytic activity in acidic media. The prepared B, S-2-Ti3C2Tx catalyst exhibits a low overpotential of −110 mV vs. reversible hydrogen electrode for the HER and a low Tafel slope of ∼54 mV dec−1. Furthermore, B, S-2-Ti3C2Tx shows a double-layer capacitance of 1.05 mF/cm2 and maintains a steady catalytic activity for the HER for over 1000 cycles.

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Interface engineering of NixSy@MoS2 heterostructured nanorods as high-efficient electrocatalysts for water splitting

Cited by 17 publications

References 56 publications

Synergistic Effect of P Doping and Mo-Ni-Based Heterostructure Electrocatalyst for Overall Water Splitting

Synergistic Effect of P Doping and Mo-Ni-Based Heterostructure Electrocatalyst for Overall Water Splitting

In Situ Construction of Zinc‐Mediated Fe, N‐Codoped Hollow Carbon Nanocages with Boosted Oxygen Reduction for Zn–Air Batteries

Efficient Electrocatalysts for Hydrogen Evolution Reaction Using Heteroatom-Doped MXene Nanosheet

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