Open AccessElectrochemical analysis study of rare earth element: Lanthanum under the effect of magnetic field and its application as an additive for chrome magneto electrodeposition
Author(s) -
Arifo Gunawan Cahyanegoro,
Sudibyo Sudibyo,
Mohammad Badaruddin,
. Sugiyanto,
Fajar Nurjaman,
Yayat Iman Supriyatna,
Erik Prasetyo
Publication year - 2022
Publication title -
journal of materials science and applied energy
Language(s) - English
Resource type - Journals
ISSN - 2286-7201
DOI - 10.55674/jmsae.v11i2.244913
Subject(s) - chronoamperometry , limiting current , tafel equation , linear sweep voltammetry , lanthanum , plating (geology) , analytical chemistry (journal) , materials science , diffusion , diffusion current , current density , chemistry , electrochemistry , electrode , cyclic voltammetry , current (fluid) , inorganic chemistry , thermodynamics , physics , chromatography , quantum mechanics , geophysics
Lanthanum is a rare earth group that is increasingly needed for a variety of applications. In this study, we analyze the effect of magnetic fields on lanthanum electrodeposition. Electrochemical analysis techniques used are linear sweep voltammetry (LSV) and Chronoamperometry (CA). LSV is used to measure the maximum current (limiting current). To determine the maximum current, the result of the LSV must be plotted in a Tafel plot. Tafel generated from LSV is the electrode potential (mV) with the logarithm of the current density (Log iL (A·cm–2)). The diffusion coefficient of the electroactive species was determined using chronoamperometry (CA). The results showed that the effect of increasing the working electrode area (A), magnetic field strength (B), and electroactive concentration (C) gave a certain increase in limiting current. Meanwhile, the addition of solution viscosity (v) and diffusion coefficient (D) will reduce the limiting current value for lanthanum electrodeposition. This study also carried out a chrome-plating process with the addition of lanthanum which was studied previously, it was found that the plating process using magnetic field produced a more uniform; thicker; more compact, and more mass deposit.