DOI: https://doi.org/10.9767/jcerp.20746

Electrochemical Behavior of Dysprosium in [EMIm]DCA Ionic Liquid Electrolyte

1Institute of Analysis, Kim Chaek University of Technology, Pyongyang 950003, North Korea

2School of Geoscience and Technology, Kim Chaek University of Technology, Pyongyang 950003, North Korea

3Institute of Information Technology, High-Tech Research and Development Center, Kim Il Sung University, Pyongyang 950003, North Korea

4 School of Airspace Science, Kim Il Sung University, Pyongyang 950003, North Korea

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Received: 18 May 2026; Revised: 28 May 2026; Accepted: 28 May 2026; Available online: 23 Jun 2026; Published: 28 Dec 2026.
Editor(s): Istadi Istadi
Open Access Copyright (c) 2026 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group
Creative Commons License This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
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Abstract
The electrochemical behavior of dysprosium (Dy) in 1-ethyl-3-methylimidazolium dicyanamide ([EMIm]DCA) ionic liquid containing DyCl₃ was comprehensively studied using cyclic voltammetry (CV), chronoamperometry (CA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). Cyclic voltammetric measurements revealed that the reduction of Dy³⁺ ions to metallic Dy is an irreversible process controlled by the diffusion of Dy³⁺ species, with an average charge transfer coefficient of 0.3898. Chronoamperometric data confirmed the one-step multielectron reduction mechanism of Dy³⁺ and the diffusion-controlled nature of the electrode process. The diffusion coefficient of Dy³⁺ calculated from CV measurements was determined to be 2.08 × 10⁻⁷ cm²·s⁻¹, which is in good agreement with the value derived from CA curves. XRD analysis confirmed the formation of metallic Dy with a preferential orientation along the (002) crystallographic plane. SEM and EDS observations demonstrated the feasibility of dysprosium electrodeposition in the [EMIm]DCA ionic liquid electrolyte, with the obtained deposits exhibiting a characteristic microgranular morphology..
Keywords: Dysprosium; electrodeposition; ionic liquid; cyclic voltammetry; diffusion-controlled process

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Section: Original Research Articles
Language : EN
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