Engineering heterostructure of bimetallic nickel-silver sulfide as an efficient electrocatalyst for overall water splitting in alkaline media

Zhang, Hongling; Tang, Haoqing; Weng, Qiang; Wei, Qing; Duan, Mengyan; Bo, Xin; Feng, Feng; Zan, Ling

doi:10.1016/j.jssc.2022.123556

Cited by 10 publications

(4 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…X-ray patterns of Ni-Fe-P-Se shown in Figure 3c resemble the existence of Ni, Fe, and Se elements. Such findings through XRD analysis confirmed the successful preparation of Ni-Fe-P-Se composition, and this combination of three different elements was already shown to promote the synergistic effect toward HER performance [29,30].…”

Section: Physicochemical Analysissupporting

confidence: 68%

One-pot synthesis of crystalline structure: Nickel-iron phosphide and selenide for hydrogen production in alkaline water splitting

Ahmed

Hanan

Lakhan

et al. 2023

J. Electrochem. Sci. Eng.

View full text Add to dashboard Cite

Electrocatalytically active nanocomposites play a vital role in energy generation, conversion, and storage technologies. Transition metal-based catalysts such as nickel and iron and their pnictide (phosphide), and chalcogenide (selenide) compounds exhibit good activity for hydrogen evolution reaction (HER) in the alkaline environment. In this study, transition metals-based catalysts (Ni-P-Se, Fe-P-Se, and Ni-Fe-P-Se) solutions were prepared using a simple one-pot method. Prepared solutions were deposited on Ni foam, and different characterization techniques were used to determine the composition, structure, and morphology of as-prepared catalysts. Furthermore, it was found that Ni-Fe-P-Se as a cathode material showed better HER performance compared to other investigated materials with the overpotential value of 316 mV at 10 mA cm-2 current density and 89 mV dec-1 Tafel slope value. The stability tests of the as-prepared catalyst confirmed that the synergistic effect between various elements enhances the electrocatalytic performance for up to 24 hours, providing a fair, stable nature of Ni-Fe-P-Se based sample.

show abstract

Section: Physicochemical Analysissupporting

confidence: 68%

One-pot synthesis of crystalline structure: Nickel-iron phosphide and selenide for hydrogen production in alkaline water splitting

Ahmed

Hanan

Lakhan

et al. 2023

J. Electrochem. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…This implies that the electronic regulations of Co and V 2 O 3 promote the dynamic conversion of Ni(OH) 2 /NiOOH significantly, thereby providing abundant active species for multistep oxidation of reaction molecules and ensuring rapid reactions. 57 Durability is an essential indicator for evaluating catalytic performance, and the HMF oxidation experiment is carried out at 1.36 V RHE . After 10 consecutive electrolysis cycles, there is no apparent decrease in current density, HMF conversion rate, and FDCA selectivity of Co−Ni/V 2 O 3 /NF, highlighting its cycle durability (Figures 5f and S15).…”

Section: Resultsmentioning

confidence: 99%

“…Notably, the reaction rate of Co–Ni/V 2 O 3 /NF is 28.6 times than that of Ni/NF. This implies that the electronic regulations of Co and V 2 O 3 promote the dynamic conversion of Ni(OH) 2 /NiOOH significantly, thereby providing abundant active species for multistep oxidation of reaction molecules and ensuring rapid reactions …”

Section: Resultsmentioning

confidence: 99%

Co- and V₂O₃-Modified Ni-Based Nanocatalyst for 5-Hydroxymethylfurfural Electrooxidation

Chen,

Wu,

Zhu

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

The electrooxidation of 5-hydroxymethylfurfural (HMF) provides a prospective method to produce high-value 2,5-furandicarboxylic acid (FDCA). Since this multistep process includes the oxidation of aldehyde and hydroxyl groups, a deep understanding of the mechanism of HMF oxidation reaction (HMFOR) is crucial. Herein, the surface reconstruction of the nickel-based catalyst is regulated by Co and V 2 O 3 modifications to reveal the relationship between the reconstructed surface and the HMFOR performance. The introduction of the V 2 O 3 nanosheet facilitates the in situ reconstruction of the nickel-based nanocatalyst by enhancing the adsorption of OH*. The incorporation of Co adjusts the electronic structure of nickel, contributing to a decrease in the formation potential of NiOOH. Moreover, the insitugenerated NiOOH promotes the adsorption and activation of aldehyde and hydroxyl groups, providing beneficial effects for HMFOR. Impressively, Co−Ni/V 2 O 3 /NF needs only 1.29 V RHE to achieve 10 mA cm −2 for HMFOR and maintains high FDCA selectivity for 10 cycles. This work explains the regulations of V 2 O 3 and Co on NiOOH species formation, which is conducive to designing an efficient nickel-based catalyst for HMF oxidation.

show abstract

“…In an analogous manner, their η 50 and η 100 values are found to be in the range of −287 to −496 and −370 to −549 mV vs RHE, respectively. Thus, the observed overpotential values of these silver-and ruthenium-based molecular electrocatalysts are at par with that of several nanomaterial-derived 47 and two-dimensional material-derived electrocatalysts employed for HER. 48 The improved HER performance of ruthenium complexes is active probably to decrease the water dissociation energy barrier and deteriorate the hydrogen-bonding interactions, thereby increasing the hydrogen adsorption ability, which is referenced by a similar activity reported for Ru fcc (111) in Ru/C 3 N 4 / C. 49 A comparison table of electrocatalysts including active metal sulfides, selenides, and palladium NHC complexes is tabulated in Table SI6.…”

Section: Electrochemical Hydrogen Evolution Studies Of Silver and Rut...mentioning

confidence: 89%

Impact of Ligand Modification on the Hydrogen Evolution Reaction of Highly Active Silver(I)- and Ruthenium(II)-N-Heterocyclic Carbene-Based Electrocatalysts: Comprehension from the Hydrogen Oxidation Reaction

Vijayakumar,

Małecki,

Nagaraju

et al. 2024

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

The development of efficient small-molecule electrocatalysts for the hydrogen evolution reaction (HER) is crucial in advanced water splitting and fuel cell applications. The use of effective molecular electrocatalysts for HER and allied reactions is limited by a lack of electrical conductivity, which strongly hinders their activity. Here, we report a series of N-heterocyclic carbene (NHC)-coordinated silver(I) (8 and 9) and ruthenium(II) (10 and 11) small-molecule electrocatalysts varied by the NHC ligand field as highly effective HER catalysts. Silver complexes 8 and 9 were prepared by the in situ deprotonation of triazolium salts (6 and 7), while ruthenium complexes 10 and 11 were prepared through transmetalation protocol using former derivatives. Both types of complexes were thoroughly characterized by various spectral and analytical techniques. Both salts were studied for their structure using the single-crystal X-ray diffraction technique. Among others, ruthenium complexes 10 and 11 evidenced an overpotential (η 10 ) of −175 and −209 mV vs RHE to reach a benchmark current density of 10 mA cm −2 , while silver derivatives 8 and 9 displayed an overpotential of −291 and −394 mV vs RHE, respectively. Their respective η 50 values are in the range −287 to −496 mV vs RHE with comparative Tafel slope values (94.3−208.4 mV dec −1 ) with a decrease in the performance to 265 mV vs RHE (η 10 for 10) over 18 h of HER operation. Alongside, hydrogen oxidation is evidenced by a significant current density observed at the platinum ring electrode. Finally, the promising HER performance of silver and ruthenium-NHC complexes is attributed to the confined coordination geometry around the metal atom (linear or three-legged piano stool), the steric bulk offered by the NHC ligand, surface morphology (well-ordered discrete microgranules/tubes to highly porous films), and the charge-transfer resistance (R ct : 119.8−191.6 Ω).

show abstract

Engineering heterostructure of bimetallic nickel-silver sulfide as an efficient electrocatalyst for overall water splitting in alkaline media

Cited by 10 publications

References 49 publications

One-pot synthesis of crystalline structure: Nickel-iron phosphide and selenide for hydrogen production in alkaline water splitting

One-pot synthesis of crystalline structure: Nickel-iron phosphide and selenide for hydrogen production in alkaline water splitting

Co- and V₂O₃-Modified Ni-Based Nanocatalyst for 5-Hydroxymethylfurfural Electrooxidation

Impact of Ligand Modification on the Hydrogen Evolution Reaction of Highly Active Silver(I)- and Ruthenium(II)-N-Heterocyclic Carbene-Based Electrocatalysts: Comprehension from the Hydrogen Oxidation Reaction

Contact Info

Product

Resources

About

Engineering heterostructure of bimetallic nickel-silver sulfide as an efficient electrocatalyst for overall water splitting in alkaline media

Cited by 10 publications

References 49 publications

One-pot synthesis of crystalline structure: Nickel-iron phosphide and selenide for hydrogen production in alkaline water splitting

One-pot synthesis of crystalline structure: Nickel-iron phosphide and selenide for hydrogen production in alkaline water splitting

Co- and V2O3-Modified Ni-Based Nanocatalyst for 5-Hydroxymethylfurfural Electrooxidation

Impact of Ligand Modification on the Hydrogen Evolution Reaction of Highly Active Silver(I)- and Ruthenium(II)-N-Heterocyclic Carbene-Based Electrocatalysts: Comprehension from the Hydrogen Oxidation Reaction

Contact Info

Product

Resources

About

Co- and V₂O₃-Modified Ni-Based Nanocatalyst for 5-Hydroxymethylfurfural Electrooxidation