Trace Amount of NiP<sub>2</sub> Cooperative CoMoP Nanosheets Inducing Efficient Hydrogen Evolution

Wang, Yechen; Wang, Yange; Bai, Jing; Lau, Woon‐Ming

doi:10.1021/acsomega.1c05206

Cited by 8 publications

(5 citation statements)

References 62 publications

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“…The overpotentials required to produce a current density of 10 mA cm –2 of 3Mn–NiP were 164 and 77 mV at acidic and alkaline solutions, respectively. Wang et al 123 demonstrated a one-step hydrothermal method for synthesizing NiP 2 with CoMoP nanosheets (NCMP) under low-temperature phosphidation conditions. In the synthesized electrocatalyst, the synergistic effect of two different components, NiP 2 and CoMoP, is induced.…”

Section: Her Electrocatalystsmentioning

confidence: 99%

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Metal Electrocatalysts for Hydrogen Production in Water Splitting

Kazemi,

Manteghi,

Tehrani

2024

ACS Omega

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The rising demand for fossil fuels and the resulting pollution have raised environmental concerns about energy production. Undoubtedly, hydrogen is the best candidate for producing clean and sustainable energy now and in the future. Water splitting is a promising and efficient process for hydrogen production, where catalysts play a key role in the hydrogen evolution reaction (HER). HER electrocatalysis can be well performed by Pt with a low overpotential close to zero and a Tafel slope of about 30 mV dec −1 . However, the main challenge in expanding the hydrogen production process is using efficient and inexpensive catalysts. Due to electrocatalytic activity and electrochemical stability, transition metal compounds are the best options for HER electrocatalysts. This study will focus on analyzing the current situation and recent advances in the design and development of nanostructured electrocatalysts for noble and non-noble metals in HER electrocatalysis. In general, strategies including doping, crystallization control, structural engineering, carbon nanomaterials, and increasing active sites by changing morphology are helpful to improve HER performance. Finally, the challenges and future perspectives in designing functional and stable electrocatalysts for HER in efficient hydrogen production from water-splitting electrolysis will be described.

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Section: Her Electrocatalystsmentioning

confidence: 99%

“…(g) Long-term stability of NCMP-2 at a constant overpotential for 10 h in 1 M KOH. Data taken from ref ( 123 ).…”

Section: Her Electrocatalystsmentioning

confidence: 99%

Metal Electrocatalysts for Hydrogen Production in Water Splitting

Kazemi,

Manteghi,

Tehrani

2024

ACS Omega

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“…Nevertheless, both investigations offer valuable insights into understanding the Co n MoP system and serve as significant references for further research in related domains. Wang et al [17] used a one‐step hydrothermal and low‐temperature phosphatization method to prepare a trace amount of NiP 2 coupled Co‐Mo‐P nanosheets (NCMP), and it was found that although the amount of NiP 2 was very low, its presence effectively improved the hydrogen precipitation reaction (HER) performance of Co‐Mo‐P. The exploration of highly active and stable non‐precious metal electrocatalysts in alkaline media is of great significance for the wide application of HER hydrogenolysis reaction.…”

Section: Introductionmentioning

confidence: 99%

Density functional theory study on interatomic forces and electronic properties of Co_nMoP(n = 1 ~ 5) cluster

Wu,

Fang,

Liu

et al. 2024

Int J of Quantum Chemistry

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To delve into the microscopic property variations of the ConMoP(n = 1 ~ 5) cluster, this study employs density functional theory at the B3LYP/def2‐TZVP quantum chemistry level. The paper conducts a comprehensive theoretical analysis of the clusters, examining parameters such as bond lengths, bond angles, electronic localization function (ELF), interaction region indicator function (IRI), independent gradient model based on the Hirshfeld partition, deformation density, electronic space range, chemical hardness and softness, polarizability, and dipole moment. The optimization process reveals 16 stable configurations for the ConMoP(n = 1 ~ 5) cluster, predominantly taking on a steric form. As the cluster size increases, the electronic delocalization of Co atoms intensifies, while the electronic properties of Mo atoms remain relatively stable. Notably, P atoms maintain a high degree of electronic delocalization. The interatomic forces within the clusters predominantly exhibit covalent bonding, with no evident repulsive effects observed between atoms. The bonding between metal atoms in the clusters leans toward a preference for covalent interaction. The degree of dispersion in the clusters increases with their growth, particularly evident in configuration 5‐a, which displays a broader spatial distribution. Configuration 3‐a demonstrates the most favorable activity, showcasing a relatively stable structure. Overall, configuration 3‐a emerges as a focal point for catalytic reactions. This article provides a more comprehensive analysis of the ConMoP(n = 1 ~ 5) cluster, yielding diverse results and enhancing the theoretical understanding of this cluster.

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“…[25] According to this theory, the catalysts combining Ni with other transition metals can be designed. [26] Among many candidate materials, NiMo-based catalysts are widely used in the study of HER [27][28][29][30] and OER, [31,32] showing excellent performance. Kotaro et al composited the NiMoN nanosheets supporting on carbon with 75 mV overpotential (10 mA cm À 2 ) for HER [33] and the NiMoO 4 synthesized by Chen et al through hydrothermal method showed excellent OER performance under alkaline environment afforded 10 mA cm À 2 at 340 mV.…”

Section: Introductionmentioning

confidence: 99%

“…According to this theory, the catalysts combining Ni with other transition metals can be designed [26] . Among many candidate materials, NiMo‐based catalysts are widely used in the study of HER [27–30] and OER, [31,32] showing excellent performance. Kotaro et al.…”

Section: Introductionmentioning

confidence: 99%

Efficient Self‐Supported Bifunctional NiMo Alloy Electrocatalysts for Water Splitting in Alkaline Environment

Wang

Bai

et al. 2022

ChemistrySelect

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Hydrogen attracts researchers' attention because its combustion products are very clean and will not pollute the environment. Electrocatalytic water splitting is a sustainable hydrogen energy production technology, which splits water into hydrogen and oxygen. In electrocatalytic water splitting, high activity catalysts can reduce the potential barrier of catalytic reaction and speed up the reaction, among which transition metal alloy catalysts have attracted extensive attention in the application of electrocatalysis due to their excellent electrochemical activity, stability and easy preparation. In this paper, the NiMoO 4 precursor was firstly synthesized by the facile hydrothermal reaction, and then the self-supported NiMo alloy was synthesized by annealing. The results indicate that NiMo alloy has efficient hydrogen evolution activity (34 mV) and oxygen evolution activity (279 mV) at 10 mA cm À 2 . More importantly, the water splitting system consisting of NiMo alloys demonstrates excellent performance and stability. At 10 mA cm À 2 , the voltage is 1.489 V, and it can be stable for at least 10 hours at 70 mA cm À 2 . This study can provide some ideas for the study of water splitting electrocatalysts.

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Trace Amount of NiP₂ Cooperative CoMoP Nanosheets Inducing Efficient Hydrogen Evolution

Cited by 8 publications

References 62 publications

Metal Electrocatalysts for Hydrogen Production in Water Splitting

Metal Electrocatalysts for Hydrogen Production in Water Splitting

Density functional theory study on interatomic forces and electronic properties of Co_nMoP(n = 1 ~ 5) cluster

Efficient Self‐Supported Bifunctional NiMo Alloy Electrocatalysts for Water Splitting in Alkaline Environment

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Trace Amount of NiP2 Cooperative CoMoP Nanosheets Inducing Efficient Hydrogen Evolution

Cited by 8 publications

References 62 publications

Metal Electrocatalysts for Hydrogen Production in Water Splitting

Metal Electrocatalysts for Hydrogen Production in Water Splitting

Density functional theory study on interatomic forces and electronic properties of ConMoP(n = 1 ~ 5) cluster

Efficient Self‐Supported Bifunctional NiMo Alloy Electrocatalysts for Water Splitting in Alkaline Environment

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Trace Amount of NiP₂ Cooperative CoMoP Nanosheets Inducing Efficient Hydrogen Evolution

Density functional theory study on interatomic forces and electronic properties of Co_nMoP(n = 1 ~ 5) cluster