Szczegóły publikacji
Opis bibliograficzny
On the prospects of magnetic-field-assisted electrodeposition of nano-structured ferromagnetic layers / Mengyuan Huang, Katarzyna SKIBIŃSKA, Piotr ŻABIŃSKI, Marek WOJNICKI, Grzegorz WŁOCH, Kerstin Eckert, Gerd Mutschke // Electrochimica Acta : Journal of the International Society of Electrochemistry ; ISSN 0013-4686. — 2022 — vol. 420 art. no. 140422, s. 1–18. — Bibliogr. s. 17–18, Abstr. — Publikacja dostępna online od: 2022-04-25
Autorzy (7)
- Huang Mengyuan
- AGHSkibińska Katarzyna
- AGHŻabiński Piotr
- AGHWojnicki Marek
- AGHWłoch Grzegorz
- Eckert Kerstin
- Mutschke Gerd
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 140051 |
|---|---|
| Data dodania do BaDAP | 2022-05-06 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.electacta.2022.140422 |
| Rok publikacji | 2022 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Electrochimica Acta |
Abstract
Micro- and nano-structured ferromagnetic layers are attractive for super-hydrophobic and electrocatalytic applications and can be effectively synthesized using electrodeposition. Beside the use of capping agents, magnetic fields have recently been proven to promote the growth of mm-sized conical structures by alternatively generating a supportive local flow. Here we explore the prospects of using magnetic fields to support the growth of smaller, micro-/nano-sized conical structures. We first elaborate by numerical simulations how the local electrolyte flow and the related inhomogeneous mass transfer change with shrinking cone size. Related scaling laws are derived, and stronger viscous friction along with smaller concentration changes inside the diffusion layer are found to limit the support of the magnetic field. To enhance the structuring effect, pulsed electrodeposition and use of superconducting magnets are discussed. Second, systematic experiments on the template-free electrodeposition of nickel layers in magnetic fields of different orientations and intensities are performed. Regardless of the direction, strong fields are found to promote blunt-ended, shell-like structures. These results are finally discussed by the help of numerical simulations which additionally consider the global cell flow forced by the magnetic fields. Importantly, global flow is found to dominate compared to local flow. We therefore propose improved electrode geometries for future research to clarify the prospects of stronger magnetic fields.