Honeycomb-like Ni-Mo-S on Ni foam as superior bifunctional electrocatalyst for hydrogen evolution and urea oxidation

Wang, Fangfang; Zhang, Kuanjian; Zha, Qingqing; Ni, Yonghong

doi:10.1016/j.jallcom.2021.163346

Cited by 39 publications

(11 citation statements)

References 49 publications

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“…In S 2p XPS shown in Figure 3e, three peaks centered at ~162.3, 163.8, and 169.1 eV are detected. The former two peaks should be assigned to S 2p3/2 and S 2p1/2 of S 2− in metal–sulfur bonds 32 . The latter one should be attributed to the oxidation of S element.…”

Section: Resultsmentioning

confidence: 93%

“…The former two peaks should be assigned to S 2p3/2 and S 2p1/2 of S 2À in metal-sulfur bonds. 32 The latter one should be attributed to the oxidation of S element. The O 1s highresolution XPS spectrum is depicted in Figure 3f.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

“…After entering 21st century, it is of great importance to search for green renewable energy for efficiently facing the challenges of the energy crisis and environmental pollution problems. 1,2 Among various clean energies, hydrogen has been widely considered as an ideal green energy carrier due to its high energy density and zero emission. [3][4][5][6] Nonetheless, it has been the primary issue to obtain highly pure hydrogen gas for developing hydrogen energy economics.…”

Section: Introductionmentioning

confidence: 99%

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Hollow CoNiS polyhedrons/MnCoNi layered double hydroxide nanorod arrays on nickel foam as integral electrodes for improved oxygen evolution reaction in alkaline media

Shi

2022

Asia-Pacific J Chem Eng

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The oxygen evolution reaction (OER) with sluggish kinetics in electron transportation has been the key process to develop water splitting technology for the hydrogen production. Here, we successfully prepared hollow CoNiS polyhedrons/MnCoNi layered double hydroxide (MCN LDH) nanorod arrays on Ni foam (labeled as CNS/MCN LDH/NF) through a two-step wet chemical route, employing NF-supported MCN LDH nanoneedle arrays as the substrate. ZIF-67 polyhedrons first loaded on MCN LDH to form ZIF-67/MCN LDH/NF, and then ZIF-67/MCN LDH/NF was sulfurized to obtain the final

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Section: Resultsmentioning

confidence: 93%

Section: Electrochemical Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hollow CoNiS polyhedrons/MnCoNi layered double hydroxide nanorod arrays on nickel foam as integral electrodes for improved oxygen evolution reaction in alkaline media

Shi

2022

Asia-Pacific J Chem Eng

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“…The above facts clearly demonstrated that the successful doping of the W element varied the morphology of Ni(OH) 2 . Usually, the honeycomb-like microstructures show a higher water contact angle due to their higher contact area fraction of air and boost the mass transfer efficiency and avail the release of gas bubbles generated during water splitting . Moreover, an HRTEM image of the as-deposited W-Ni(OH) 2 catalyst is depicted in Figure f.…”

Section: Resultsmentioning

confidence: 99%

“…Usually, the honeycomb-like microstructures show a higher water contact angle due to their higher contact area fraction of air 35 and boost the mass transfer efficiency and avail the release of gas bubbles generated during water splitting. 36 Moreover, an HRTEM image of the as-deposited W-Ni(OH) 2 catalyst is depicted in Figure 2f. Thereinto, the lattice spaces of 0.197 and 0.23 nm separately corresponded to (018) and (015) planes of Ni(OH) 2 •0.75H 2 O, suggesting no noticeable change in the lattice spaces after doping the W element.…”

Section: Characterization Of Electrocatalysts Figures S1−s3mentioning

confidence: 99%

W-Doped α-Ni(OH)₂ Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution

Wang

Zhang

et al. 2022

ACS Sustainable Chem. Eng.

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It is critical for converting renewable electricity into chemicals and fuels to develop electrocatalysts with good reactivity and high stability for oxygen evolution reaction (OER) using a cost-effective and straightforward manner. Here, we successfully fabricated W-doped α-Ni(OH)2 honeycomb-like microstructures deposited on nickel foam (NF) using an easy and fast one-step electrodeposition approach. Some parameters affecting the morphology and OER activity of the target product were systematically investigated, including the initial nickel source, the deposition time, and the deposition current density. It was found that W-doped α-Ni(OH)2 honeycomb-like microstructures deposited from the NiSO4 solution at −100 mA cm–2 for 15 min manifested the strongest electrocatalytic OER capability. In 1.0 M KOH, only 170/209 mV of overpotential was required for the as-obtained W-Ni(OH)2/NF electrode to launch a current density of 10/100 mA cm–2, respectively, outperforming most previously reported electrocatalysts. Also, the as-prepared catalyst showed outstanding long-term stability without attenuation over 400 h at a large current density of 250 mA cm–2. Distinctly, the present electrochemical deposition technology paves a facile and fast pathway for preparing nonprecious metal OER electrocatalysts with high electroactivity.

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A Novel Anodic Heterostructure Based on Commercial 1J50 Permalloy for Urea‐Assisted Water Splitting

Lin,

Zhang,

Dai

et al. 2024

ChemCatChem

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A commercially available magnetic metallic material, 1J50 permalloy, was employed in this work to fabricate a novel anode for the urea‐assisted electrocatalysis. Featuring the simple surface treatments of electrode substrate, including elemental leaching to modulate Ni/Fe ratio in KSCN solution and subsequent chronopotentiometric aging in test solution, the as‐fabricated anode can deliver a current density of 10 mA cm‐2 at 1.355 V (RHE) in 1 M KOH solution containing 0.33 M urea, without suffering all disadvantages of traditional anodes, e.g. complicated fabrication process and impossible substrate regeneration. It was evidenced that Ni can be sustained at first and oxidized subsequently to form UOR‐active species in divalent or trivalent states; whereas Fe after elemental leaching can be mainly oxidized to form Fe3O4 with acceptable electric conductivity and the remnant is incorporated into the lattices of Ni‐containing species for Ni‐Fe synergy. Thus, the outstanding UOR performance is directly associated with the hetero‐structure composed mainly of the UOR‐active LDH decorated with the electrically conductive Fe3O4 particles and other UOR‐enhancing (oxy)hydroxides.

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Honeycomb-like Ni-Mo-S on Ni foam as superior bifunctional electrocatalyst for hydrogen evolution and urea oxidation

Cited by 39 publications

References 49 publications

Hollow CoNiS polyhedrons/MnCoNi layered double hydroxide nanorod arrays on nickel foam as integral electrodes for improved oxygen evolution reaction in alkaline media

Hollow CoNiS polyhedrons/MnCoNi layered double hydroxide nanorod arrays on nickel foam as integral electrodes for improved oxygen evolution reaction in alkaline media

W-Doped α-Ni(OH)₂ Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution

A Novel Anodic Heterostructure Based on Commercial 1J50 Permalloy for Urea‐Assisted Water Splitting

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Honeycomb-like Ni-Mo-S on Ni foam as superior bifunctional electrocatalyst for hydrogen evolution and urea oxidation

Cited by 39 publications

References 49 publications

Hollow CoNiS polyhedrons/MnCoNi layered double hydroxide nanorod arrays on nickel foam as integral electrodes for improved oxygen evolution reaction in alkaline media

Hollow CoNiS polyhedrons/MnCoNi layered double hydroxide nanorod arrays on nickel foam as integral electrodes for improved oxygen evolution reaction in alkaline media

W-Doped α-Ni(OH)2 Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution

A Novel Anodic Heterostructure Based on Commercial 1J50 Permalloy for Urea‐Assisted Water Splitting

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W-Doped α-Ni(OH)₂ Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution