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MoS2 Nanosheets Uni...
MoS2 Nanosheets Uniformly Anchored on NiMoO4 Nanorods, a Highly Active Hierarchical Nanostructure Catalyst for Oxygen Evolution Reaction and Pseudo-Capacitors
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- Solomon, Getachew (author)
- Luleå tekniska universitet,Materialvetenskap
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- Gilzad Kohan, Mojtaba (author)
- Luleå tekniska universitet,Materialvetenskap
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- Mazzaro, Raffaello (author)
- Istituto di Microelettronica e Microsistemi-CNR (CNR, IMM), Via Piero Gobetti 101, Bologna, 40129 Italy; Department of Physics and Astronomy, University of Bologna, Via Berti Pichat 6/2, Bologna, 40129 Italy
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- Jugovac, Matteo (author)
- Elettra Sincrotrone Trieste, SS 14 Km 163,5, Trieste, 34149 Italy
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- Moras, Paolo (author)
- Istituto di Struttura della Materia-CNR (ISM-CNR), SS 14, Km 163.5, Trieste, 34149 Italy
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- Morandi, Vittorio (author)
- Istituto di Microelettronica e Microsistemi-CNR (CNR, IMM), Via Piero Gobetti 101, Bologna, 40129 Italy
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- Concina, Isabella (author)
- Luleå tekniska universitet,Materialvetenskap
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- Vomiero, Alberto (author)
- Luleå tekniska universitet,Materialvetenskap,Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, Venezia Mestre, Bologna, 30172 Italy
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(creator_code:org_t)
- 2022-12-08
- 2023
- English.
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In: Advanced sustainable systems. - : John Wiley & Sons. - 2366-7486. ; 7:2
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Abstract
Subject headings
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- Hierarchical nanostructures have attracted considerable research attention due to their applications in the catalysis field. Herein, we design a versatile hierarchical nanostructure composed of NiMoO4 nanorods surrounded by active MoS2 nanosheets on an interconnected nickel foam substrate. The as-prepared nanostructure exhibits excellent oxygen evolution reaction performance, producing a current density of 10 mA cm−2 at an overpotential of 90 mV, in comparison with 220 mV necessary to reach a similar current density for NiMoO4. This behavior originates from the structural/morphological properties of the MoS2 nanosheets, which present numerous surface-active sites and allow good contact with the electrolyte. Besides, the structures can effectively store charges, due to their unique branched network providing accessible active surface area, which facilitates intermediates adsorptions. Particularly, NiMoO4/MoS2 shows a charge capacity of 358 mAhg−1 at a current of 0.5 A g−1 (230 mAhg−1 for NiMoO4), thus suggesting promising applications for charge-storing devices.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- electrocatalysts
- hierarchical nanostructures
- hydrous catalysts
- magnetron sputtering
- oxygen evolution reaction
- pseudo capacitors
- water splitting
- Experimentell fysik
- Experimental Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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