Electrodeposition of nanocrystalline FeXCo1-X thin films from choline chloride–urea deep eutectic solvents
Fe<sub>x</sub>Co<sub>1-x</sub> thin films were electrodeposited from a choline-urea deep eutectic solvent (DES) containing Fe<sup>3+</sup> and Co<sup>2+</sup> ions under ambient conditions. Anomalous co-deposition was observed, with Fe preferentially depositing over Co. With higher cathodic potential, the film's morphology shifted from smooth to nodular. X-ray diffraction (XRD) analysis showed iron oxide impurities at lower overpotential and temperatures (e.g., <-0.9 V at 70 °C), while impurity-free, nanocrystalline Co<sub>50</sub>Fe<sub>50</sub> films had formed at higher temperatures (e.g., 130 °C). The films exhibited a body-centered cubic (BCC) structure with (110) preferred orientation and grain sizes of 30 nm-40 nm.
Authors
- Tingjun Wu (ORCID: https://orcid.org/0000-0002-7469-6931)
- Yong‐Ho Choa (ORCID: https://orcid.org/0000-0002-1254-3593)
- Nosang V. Myung (ORCID: https://orcid.org/0000-0002-5801-2034)
- Jiwon Kim (ORCID: https://orcid.org/0000-0001-6493-3828)
Institutions
- University of Notre Dame (US)
- Xiamen Institute of Rare-earth Materials (CN)
- Institute for Advanced Engineering (KR)
- Hanyang University (KR)
Publication Details
- Journal
- Frontiers in Chemistry
- Published
- 2025-09-01
- DOI
- https://doi.org/10.3389/fchem.2025.1635084
- Citations
- 1
- Primary Topic
- Electrodeposition and Electroless Coatings
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- Ministry of Trade, Industry and Energy