Electrochemical characterization of the Ni–W catalyst formed in situ during alkaline electrolytic hydrogen production—Part II

Kaninski, Milica P. Marčeta; Saponjic, Djordje; Perović, Ivana; Maksić, Aleksandar D.; Nikolić, Vladimir M.

doi:10.1016/j.apcata.2011.07.015

Cited by 23 publications

(6 citation statements)

References 14 publications

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“…Ni-based materials (Ni-based alloys and Ni-based composites) are one of the most promising catalysts for HER, such as NiCo, NiW, NiMo, NiP, NiS, NiCoFe, NiCoSe, NiFeS, NiMnS, NiMoN, Ni-MnO 2 , Ni-CeO 2 , Ni-MoS 2 , etc. Recently, the studies about carbon material catalysts on electrolysis of water for hydrogen production have obtain a lot of attention, yet the pristine carbon material catalysts (biomass carbons, CNTs, graphene, carbon spheres, etc.)…”

Section: Introductionmentioning

confidence: 99%

Coral-like-Structured Ni/C₃N₄ Composite Coating: An Active Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Solution

Wang

Yin

et al. 2017

ACS Sustainable Chem. Eng.

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Exploiting high-efficiency catalysts toward hydrogen evolution reaction (HER) is a significant assignment nowadays. We find a quick and straightforward means to produce large-scale g-C 3 N 4 , which does not use template and easily obtains uniform nanostructures. And, we fabricate onestep preparation of a non-noble-metal catalyst, consisting of carbon material and transition metal only, by coupling graphitic carbon nitride (g-C 3 N 4 ) with Ni. The results show that Ni/C 3 N 4 composite catalyst possesses coral-like structure and its unique morphology is in favor of electrochemical activity for HER. Simultaneously, the Ni/C 3 N 4 composite catalyst presented prominent activity on HER with a high exchange current density of 1.91 × 10 −4 A cm −2 , a low Tafel slope of 128 mV dec −1 and small overpotentials of 356 and 222 mV to reach current densities of 100 and 10 mA cm −2 , which are superior to those of the state-of-the-art HER-active Ni-based compositions, as well as majority other metal-free catalysts, and even rivaled the electrocatalytic property of commercial Pt/C catalyst.

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Section: Introductionmentioning

confidence: 99%

Coral-like-Structured Ni/C₃N₄ Composite Coating: An Active Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Solution

Wang

Yin

et al. 2017

ACS Sustainable Chem. Eng.

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“…Because of its long-range disorder and short-range order in its atomic structure, amorphous alloys exhibit extremely excellent chemical properties, physical properties and mechanical properties [18][19][20][21] that crystalline alloys do not have. Performance [22] has become one of the important research directions in the field of materials science. Numerous research results show that when the content of tungsten in the alloy coating exceeds 44 %, the alloy coating has an amorphous structure [23].…”

Section: The Structure and Precipitation Mechanism Of Ni-w Coatingthe Influence Of Process Conditions On Electrodeposited Ni-w Coatingmentioning

confidence: 99%

Current Status of Research on Electrodeposited Ni-W Alloy Coating

Zhan

et al. 2021

E3S Web Conf.

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This paper discusses the influence of pH value, temperature and current density on the crystalline and amorphous structure of Ni-W alloy coatings during the electroplating process. The relationship between the corrosion resistance of Ni-W alloy coating and its crystal structure is discussed. In addition, the most common types of ternary systems and composite coatings for electrodeposited Ni-W alloy coatings are introduced. The effects of element types and contents on the hardness, wear resistance, corrosion resistance and thermal stability of Ni-W alloy coatings are analyzed. Finally, the current problems and development directions of Ni-W alloy coatings are proposed.

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“…In the field of micromechanical technologies, due to rapid developments, the demand for exceptional mechanical and physical properties continues to grow, and therefore Ni-W alloys are a perfect choice in the production of microelectromechanical structures and microdevices [10,11]. The Ni -W alloy system is known for the expected electrolytic properties of electrodes that improve the current and energy efficiency of the hydrogen evolution reaction (HER) from alkaline solutions [12][13][14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Research on Obtaining and Characterizing Ni - W Electroplating Alloys for Micro-Electro Mechanics

Poroch-Seriţan

Creţescu

Gutt

et al. 2022

BULETINUL INSTITUTULUI POLITEHNIC DIN IAȘI. Secția Matematica. Mecanică Teoretică. Fizică

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The present research aimed to electrodeposit and characterize Ni-W alloys for different technological parameters, being an example of “induced co-deposition”, in which a certain metal (for example: Mo, W) can be co-deposited as an alloy, but it cannot be measured in its pure state. The investigated characteristics were the efficiency current, the average thickness, and the structural properties of the obtained deposits. The current efficiency decreases with an increased applied current density, and the tungsten content remains constant at around 11% for different current densities (10 mA·cm−2 and 16 mA·cm−2, respectively). An increase in the temperature of the electrolyte leads to the inclusion of more tungsten. The deposit tungsten content and the current efficiency are directly related to pH. The deposit hardness directly relates to the alloy composition, deposit morphology, and coating thickness. The higher hardness, approximatively 100 HV were measured and the optimal brightness were observed for the alloys obtained at increased current density (i = 16 mA·cm−2, T = 50°C, pH = 8), or to a basic pH (i = 10 mA·cm−2, T = 50°C, pH = 9.23). The scanning electron microscopy (SEM) technique was used to analyze the surface morphology, and energy dispersive spectroscopy (EDS) analysis was carried out to determine the composition of the alloys. The metallic surface brightness (%) was evaluated using the miniature spectrometer, based on the reflection property of the electrodeposited metallic layer, scanning the all-wavelength range between 200-1100 nm.

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Electrochemical characterization of the Ni–W catalyst formed in situ during alkaline electrolytic hydrogen production—Part II

Cited by 23 publications

References 14 publications

Coral-like-Structured Ni/C₃N₄ Composite Coating: An Active Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Solution

Coral-like-Structured Ni/C₃N₄ Composite Coating: An Active Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Solution

Current Status of Research on Electrodeposited Ni-W Alloy Coating

Research on Obtaining and Characterizing Ni - W Electroplating Alloys for Micro-Electro Mechanics

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Electrochemical characterization of the Ni–W catalyst formed in situ during alkaline electrolytic hydrogen production—Part II

Cited by 23 publications

References 14 publications

Coral-like-Structured Ni/C3N4 Composite Coating: An Active Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Solution

Coral-like-Structured Ni/C3N4 Composite Coating: An Active Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Solution

Current Status of Research on Electrodeposited Ni-W Alloy Coating

Research on Obtaining and Characterizing Ni - W Electroplating Alloys for Micro-Electro Mechanics

Contact Info

Product

Resources

About

Coral-like-Structured Ni/C₃N₄ Composite Coating: An Active Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Solution

Coral-like-Structured Ni/C₃N₄ Composite Coating: An Active Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Solution