Pt- and Pd-modified transition metal nitride catalysts for the hydrogen evolution reaction

Ologunagba, Damilola; Kattel, Shyam

doi:10.1039/d2cp00792d

Cited by 13 publications

(12 citation statements)

References 105 publications

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“…[59] As well documented in previous studies, [60][61][62] the high binding energy of this intermediate to the transition metals and their nitrides does not allow the reaction to advance to desorption, which is the dominating reason for inhibiting the HER and increased resistance. A recent computational study, based on density functional theory, [1] showed higher hydrogen binding energy for CrN than TiN [63] further supports our findings.…”

Section: Electrolytesupporting

confidence: 89%

Contribution of galvanic coupling with TiN, TiAlN, and CrN to the corrosion of steel in neutral and acidic chloride solutions

Avcı

Kazmanlı

Evren

et al. 2023

Materials & Corrosion

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The inherent defective morphology of the physical vapor deposition (PVD) hard coatings limits their corrosion protective ability. We examined the impact of nitride‐based PVD coatings, including TiN, TiAlN, and CrN deposited on inert substrates by cathodic arc PVD method (CA‐PVD), on the galvanic corrosion of carbon steel. Their contribution was evaluated by zero‐resistance ammeter (ZRA) and electrochemical impedance spectroscopy (EIS) in 3.5 wt.% NaCl at pH 2 and 6, with and without aeration. The results indicated the prominent role of the coating type and the coupling environment on the generated galvanic currents. Immersion tests for the TiN‐, TiAlN‐, and CrN‐coated steel cross‐sections visually verified these results. The galvanic current contribution was distinct in environments where oxygen reduction is the dominant cathodic reaction. However, the layers' contribution to galvanic corrosion was minimal in deaerated acidic solutions, which is attributed to the high bonding strength of adsorbed intermediates to the coating surfaces.

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Section: Electrolytesupporting

confidence: 89%

Contribution of galvanic coupling with TiN, TiAlN, and CrN to the corrosion of steel in neutral and acidic chloride solutions

Avcı

Kazmanlı

Evren

et al. 2023

Materials & Corrosion

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“…Platinum (Pt) is the well-recognized HER catalyst since there is almost no overpotential at startup and the current rises rapidly with increasing voltage. Reducing the loading of platinum is the only viable method for reducing prices, and researchers have made several efforts to build new catalysts to develop inexpensive and plentiful alternatives to Pt [ 109 , 110 ]. Although it is commonly asserted that potential non-Pt catalysts have been developed, none can match the inherent activity and stability of Pt/C.…”

Section: Progress In Catalysts For the Hermentioning

confidence: 99%

Recent Advances Regarding Precious Metal-Based Electrocatalysts for Acidic Water Splitting

Peng¹,

Liao

Ye³

et al. 2022

Nanomaterials

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Electrochemical water splitting has wide applicability in preparing high-density green energy. The Proton exchange membrane (PEM) water electrolysis system is a promising technique for the generation of hydrogen due to its high electrolytic efficiency, safety and reliability, compactness, and quick response to renewable energy sources. However, the instability of catalysts for electrochemical water splitting under operating conditions limits their practical applications. Until now, only precious metal-based materials have met the requirements for rigorous long-term stability and high catalytic activity under acid conditions. In this review, the recent progress made in this regard is presented and analyzed to clarify the role of precious metals in the promotion of the electrolytic decomposition of water. Reducing precious metal loading, enhancing catalytic activity, and improving catalytic lifetime are crucial directions for developing a new generation of PEM water electrolysis catalysts. A summary of the synthesis of high-performance catalysts based on precious metals and an analysis of the factors affecting catalytic performance were derived from a recent investigation. Finally, we present the remaining challenges and future perspectives as guidelines for practical use.

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“…Large abundant non-noble transition metals and their compounds have been explored as electrocatalysts for facilitated HER such as transition metals/alloys, , carbides, − nitrides, , phosphides, , sulfides, , selenides, − etc. For instance, we have constructed a hierarchical nanosheet structure of vanadium carbide (VC) graphitic carbon nanosheet (gCNS) composed of isolated VC nanoparticles encapsulated by a mesoporous gCNS with high conductivity for HER in an acidic electrolyte .…”

Section: Introductionmentioning

confidence: 99%

“…However, the expensive price and small reserves of Ptgroup metals have limited their universal application to HER, and therefore, it is significant to construct nonprecious transition metal-based catalysts for highly efficient HER. 7−9 Large abundant non-noble transition metals and their compounds have been explored as electrocatalysts for facilitated HER such as transition metals/alloys, 10,11 carbides, 12−14 nitrides, 15,16 phosphides, 17,18 sulfides, 19,20 selenides, 21−23 etc. For instance, we have constructed a hierarchical nanosheet structure of vanadium carbide (VC) graphitic carbon nanosheet (gCNS) composed of isolated VC nanoparticles encapsulated by a mesoporous gCNS with high conductivity for HER in an acidic electrolyte.…”

Section: ■ Introductionmentioning

confidence: 99%

Hands-on Experiment for Preparation and Electrochemical Performance Evaluation of Hydrogen Evolution Reaction Electrodes for Undergraduates

Peng

Zhao

et al. 2023

J. Chem. Educ.

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Hydrogen production from electrochemical water splitting via hydrogen evolution reaction (HER) powered by sustainable energy has been recognized as one of the most promising alternatives to traditional fossil fuels. To integrate the fundamental knowledge of chemistry, electrochemistry, and materials science with practical application and scientific frontier, we propose an experiment design to prepare the HER electrodes and evaluate their electrochemical performance for materials science undergraduate students. The experiment has been carried out in a materials science comprehensive laboratory with conventional equipment and nontoxic chemicals. The experimental design covers the mechanism of water splitting, reaction routes in HER, the crystal structure of electrocatalyst, preparation protocol of electrode, electrochemical evaluation methods as well as the relationship between them, which would offer a new idea to deliver cutting-edge concepts related to new energy materials and devices to the students and design electrocatalysts with outstanding comprehensive properties for future green hydrogen production.

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Pt- and Pd-modified transition metal nitride catalysts for the hydrogen evolution reaction

Abstract: Hydrogen production via the electrochemical splitting of water using renewable electricity represents a promising strategy. Currently, Platinum group metals (PGM) are the best performing hydrogen evolution reaction (HER) catalysts. Thus,...

Cited by 13 publications

References 105 publications

Contribution of galvanic coupling with TiN, TiAlN, and CrN to the corrosion of steel in neutral and acidic chloride solutions

Contribution of galvanic coupling with TiN, TiAlN, and CrN to the corrosion of steel in neutral and acidic chloride solutions

Recent Advances Regarding Precious Metal-Based Electrocatalysts for Acidic Water Splitting

Hands-on Experiment for Preparation and Electrochemical Performance Evaluation of Hydrogen Evolution Reaction Electrodes for Undergraduates

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