Fabrication of Mg–Pr and Mg–Li–Pr alloys by electrochemical co-reduction from their molten chlorides

Tang, Hao; Yan, Yongde; Zhang, Milin; Li, Xing; Han, Wei; Xue, Yong; Zhang, Zhijian; He, Hao

doi:10.1016/j.electacta.2013.05.129

Cited by 43 publications

(24 citation statements)

References 27 publications

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“…[9][10][11][12][13][14][15] Electrolyte systemsf or metal electrodeposition could be divided into two groups, high-temperature molten salts and low-temperature ionic liquids. [9][10][11][12][13][14][15] Electrolyte systemsf or metal electrodeposition could be divided into two groups, high-temperature molten salts and low-temperature ionic liquids.…”

Section: Introductionmentioning

confidence: 99%

“…Molten-salt electrolysis methods have widely been used to preparem etal alloys in recenty ears. [9][10][11][12][13][14][15] Electrolyte systemsf or metal electrodeposition could be divided into two groups, high-temperature molten salts and low-temperature ionic liquids. [16][17][18][19][20] Zhao et al [21] studied the effect of the metal substrate on the Mg electrodeposition process in tetrahydrofuran solution.A lthough the obtained magnesium deposits in the low-temperature system were uniform and dense on the coppers ubstrate, Mg-Cu alloy phases were not found.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Formation and Phase Control of Mg–Cu Alloys

Zeng

Wang

et al. 2015

ChemElectroChem

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Mg–Cu alloys with different phases were electrodeposited in a molten LiCl–KCl eutectic mixture containing a small amount (0.5 mol %) of MgCl2 at 673 K. The electrochemical behavior of the MgII ion and alloy formation processes were studied at inert molybdenum (Mo) and active copper (Cu) electrodes in the molten salts, respectively. Different electrochemical techniques, such as cyclic voltammetry, square‐wave voltammetry, chronoamperometry, and open‐circuit potentiometry were carried out to investigate the electrochemical formation mechanism of Mg–Cu alloys. Three signals, corresponding to the formation of metal Mg and two different Mg–Cu alloy phases, are observed when using cyclic voltammetry, square‐wave voltammetry, and open‐circuit potentiometry. Chronoamperometry studies indicate the different interfacial properties of the magnesium metal versus the Mg–Cu alloys. The results of X‐ray diffraction and scanning electron microscopy show that the MgCu2 and Mg2Cu phases could be obtained at −2.30 and −2.38 V (vs. Pt), respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical Formation and Phase Control of Mg–Cu Alloys

Zeng

Wang

et al. 2015

ChemElectroChem

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“…ey have used an Al electrode in a chloride salt [16][17][18][19], Ni and Cu electrodes in a fluoride salt [20], W electrode in MgCl 2 -containing salt [21], and Mg electrode [22][23][24]. Especially, Yang et al reported that the selective extraction of Dy was carried out using Mg electrode [22].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Removal of Rare Earth Element in LiCl-KCl Molten Salt

Kim

Jang

Paek

et al. 2020

Science and Technology of Nuclear Installations

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This study was carried out to examine the removal of rare earth (RE) elements by electrodeposition for the purification and reuse of LiCl-KCl salt after electrorefining and electrowinning. The electrochemical behavior of RE elements (Dy and Gd) in LiCl-KCl-DyCl3-GdCl3 at 500°C was investigated using the cyclic voltammetry (CV) technique using Mo and Mg electrodes. It was observed that the reduction potential of the RE elements shifted at the Mg electrode owing to the alloy formation with Mg (RE-Mg alloy). Subsequently, a series of potentiostatic electrolysis tests were conducted to remove the RE elements in the salt and check the formation of deposits at the Mg and Mo electrodes. The scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM/EDS) technique was used to confirm that the reduced RE metals were deposited on the surface of the Mg electrode. However, no significant deposit on the Mo electrode was observed, and a mud-like deposit was found on the bottom of the electrochemical cell. The salt analysis performed by employing the inductively coupled plasma-optical emission spectrometry (ICP-OES) indicated that the removal efficiency of Dy3+ and Gd3+ through electrodeposition was 83.5∼95.2 and 91.6∼95.2%, respectively.

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“…Praseodymium is a typical fission product and difficult to be separated from actinides. Therefore, the separation and extraction of Pr from molten salt have been extensively studied on different electrode materials, like W 21 , Al 21 , Ni [22][23][24][25][26] , Mg 16,27 , liquid Cd 18 , and liquid Bi 18 .…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Behavior of Pr(Ⅲ) Ions on a Bi-Coated W Electrode in LiCl-KCl Melts

Jiang¹,

Peng²,

Li³

et al. 2016

Acta Physico-Chimica Sinica

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The electrochemical behavior of Pr(III) ions was studied on a Bi-coated W electrode in LiCl-KCl melts by a series of techniques, such as cyclic voltammetry, square wave voltammetry, and open circuit chronopotentiometry. From the cyclic voltammogram and square wave voltammogram, the underpotential deposition of Pr(III) on pre-deposited Bi (i.e., a Bi-coated W electrode) occurs, owing to the formation of Pr-Bi intermetallic compounds, resulting in the electrochemical reduction of Pr(III) at less cathodic potentials than that on an inert W electrode. Using the open circuit chronopotentiometry technique, two plateaus, corresponding to the coexistence of two phases of Pr-Bi intermetallic compound, were observed. Thermodynamic properties, such as the activities and relative partial molar Gibbs energies of Pr in the Pr-Bi alloys as well as Gibbs energies of the formation for the Pr-Bi intermetallic compounds, were estimated from the open circuit potential measurement in the temperature range of 723-873 K. Pr-Bi alloys were produced on the liquid Bi pool electrode by potentiostatic electrolysis, and were characterized by X-ray diffraction (XRD) and scanning electronic microscopy with energy-dispersive spectrometry (SEM-EDS). The results indicated that the intermetallic 1708 JIANG Tao et al.: Electrochemical Behavior of Pr(III) Ions on a Bi-Coated W Electrode in LiCl-KCl Melts No.7

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Fabrication of Mg–Pr and Mg–Li–Pr alloys by electrochemical co-reduction from their molten chlorides

Cited by 43 publications

References 27 publications

Electrochemical Formation and Phase Control of Mg–Cu Alloys

Electrochemical Formation and Phase Control of Mg–Cu Alloys

Electrochemical Removal of Rare Earth Element in LiCl-KCl Molten Salt

Electrochemical Behavior of Pr(Ⅲ) Ions on a Bi-Coated W Electrode in LiCl-KCl Melts

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