Fabrication of highly efficient Rh-doped cobalt–nickel-layered double hydroxide/MXene-based electrocatalyst with rich oxygen vacancies for hydrogen evolution

Liang, Yan; Song, Dandan; Liang, Jiayu; Li, Hao; Liu, Quanbing

doi:10.1016/j.jcis.2023.02.113

Cited by 30 publications

(5 citation statements)

References 95 publications

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“…These modications resulted in optimized adsorption energies for intermediates involved in the hydrogen evolution reaction (HER), consequently enhancing the intrinsic catalytic activity of CoNi LDH. 80 In another study, Shen et al devised a reliable and userfriendly approach for effectively producing a well-regulated 3D interconnected structure of Ni-Fe layered double hydroxide nanosheets (LDH) conned within a network of Ti 3 C 2 T x MXenereduced graphene oxide (MX-RGO). 81 The method used was a bottom-up strategy that allows control over the synthesis process, and it employed a co-assembly technique as shown in Fig.…”

Section: Mxene-based Hybrid Architectures For Hermentioning

confidence: 99%

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Recent advances in the role of MXene based hybrid architectures as electrocatalysts for water splitting

Sajid,

Iqbal,

Rizwan

2024

RSC Adv.

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Section: Mxene-based Hybrid Architectures For Hermentioning

confidence: 99%

“…These modifications resulted in optimized adsorption energies for intermediates involved in the hydrogen evolution reaction (HER), consequently enhancing the intrinsic catalytic activity of CoNi LDH. 80 …”

Section: Introductionmentioning

confidence: 99%

Recent advances in the role of MXene based hybrid architectures as electrocatalysts for water splitting

Sajid,

Iqbal,

Rizwan

2024

RSC Adv.

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“…In terms of the overpotentials at a current density of -10 mA cm −2 and related Tafel slopes, the Zn-Ni 2 P/FeOOH catalyst (Figure 6e) surpasses most of the state-of-the-art Ni or Fe-based phosphide HER catalysts. [18,22,23,[29][30][31][32][33][34][35][36][37][38][39][40][41] Furthermore, the Faradic efficiency toward hydrogen generation on the Zn-Ni 2 P/FeOOH catalyst was calculated. Obviously, the amounts of produced H 2 collected at current density of 200 mA cm −2 match well with the theoretically calculated value, corresponding to a Faradaic efficiency of ∼ 96% (Figure 6f; Figure S37, Supporting Information).…”

Section: Her Activity Of Reconstruction Catalystmentioning

confidence: 99%

Cation‐Induced Deep Reconstruction and Self‐Optimization of NiFe Phosphide Precatalysts for Hydrogen Evolution and Overall Water Splitting

Nie,

Shi,

Huang

et al. 2024

Adv Funct Materials

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Surface reconstruction that produces real active species for catalytic reactions generally occurs during electrocatalytic water splitting, but overcoming the reconstruction level‐mass activity‐stability trade‐off is a grand challenge. A cation‐doping in conjunction with a geometrical topology strategy is proposed to concurrently realize deep reconstruction and self‐optimization of FeNi phosphide nanoarrays during an electrochemical activation process. The doped Zn cation induces a deep reconstruction of FeNiP@Fe2P precatalyst by continuously dissolving Fe2P and re‐depositing as amorphous FeOOH that solders Ni2P nanoparticles, forming small ultra‐thin nanosheets with abundant amorphous‐crystalline interfaces for structural stability. Moreover, multichannel topology exhibits an unusual ability to optimize their morphology via finally evolving into multi‐microchannel tubular nanoarrays comprising of interconnected‐nanosheets with a very loose structure for enhanced electrolyte permeability, mass transfer, and accessibility of active sites. The reconstructed Zn‐Ni2P/FeOOH superstructure catalysts reach 10 mA cm−2 current density at an ultra‐low overpotential of 11 mV for hydrogen evolution reactions (HER). Impressively, when assembled as a two‐electrode cell with Zn‐FeNiP@Zn‐Fe2P as anode and Zn‐Ni2P/FeOOH as cathode, it delivers current densities of 10 mA cm−2 at a record low cell voltage of 1.40 V. This strategy provides a novel avenue to promote reconstruction for achieving high catalytic performance.

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“…X denotes the element carbon (C) and/or nitrogen (N), while T signifies several chemical groups, including –OH, –O, –Cl, and –F. , The 2D transition-metal carbides (2D MXenes) exhibit a combination of exceptional metallic conductivity, remarkable hydrophilicity, and a wide range of chemical functionalization capabilities on their surfaces . Because of these advantages, MXene is particularly promising in a wide range of applications, including energy storage, catalysis, − transparent electronic devices, separation membranes, sensors, reinforcement for composites, electromagnetic shielding, and biomedicine. − Van der Waals attraction and hydrogen bonds, however, also contribute to MXene’s great tendency for intersheet aggregation. The aforementioned limitation gives rise to a decline in performance due to the reduction in surface area and challenges in the processability of materials based on MXene. , This issue may be effectively solved by adding interlayer spacers, such as polymers, nanoparticles, big ions, nanotubes, or even gaseous species, between MXene nanosheets. ,,− The utilization of a 3D MXene frame, which possesses exceptional conductivity and hydrophilic characteristics, serves to improve the kinetics of charge transfer and the adsorption/activation of water molecules on electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Network of Highly Uniform Cobalt Oxide Microspheres/MXene Composite as a High-Performance Electrocatalyst in Hydrogen Evolution Reaction

Ghaemmaghami,

Yamini

2024

ACS Appl. Mater. Interfaces

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Due to its affordable cost, excellent redox capability, and relatively effective resistance to corrosion in alkaline environments, spinel Co 3 O 4 demonstrates potential as a viable alternative to noble-metal-based electrocatalysts. Nevertheless, these materials continue to exhibit drawbacks, such as limited active surface area and inadequate intrinsic conductivity. Researchers have been trying to increase the electrical conductivity of Co 3 O 4 nanostructures by integrating them with various conductive substrates due to the low conductivity of pristine Co 3 O 4 . In this study, uniform cobalt glycerate solid spheres are first synthesized as the precursor and subsequently transformed into cobalt oxide microspheres by a simple annealing procedure. Co 3 O 4 grown on the surface of Ti 3 C 2 T x -MXene nanosheets (Co 3 O 4 /MXene) was successfully synthesized through electrostatic attraction. In order to create a positively charged surface, the Co 3 O 4 microspheres were treated with aminopropyltriethoxysilane. The Co 3 O 4 /MXene exhibited a low overpotential of 118 mV at 10 mA cm −2 and a Tafel slope of 113 mV dec −1 for the hydrogen evolution reaction, which is much lower than the pristine Co 3 O 4 at 232 and 195.3 mV dec −1 .

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Fabrication of highly efficient Rh-doped cobalt–nickel-layered double hydroxide/MXene-based electrocatalyst with rich oxygen vacancies for hydrogen evolution

Cited by 30 publications

References 95 publications

Recent advances in the role of MXene based hybrid architectures as electrocatalysts for water splitting

Recent advances in the role of MXene based hybrid architectures as electrocatalysts for water splitting

Cation‐Induced Deep Reconstruction and Self‐Optimization of NiFe Phosphide Precatalysts for Hydrogen Evolution and Overall Water Splitting

Three-Dimensional Network of Highly Uniform Cobalt Oxide Microspheres/MXene Composite as a High-Performance Electrocatalyst in Hydrogen Evolution Reaction

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