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Electrochemical behavior of Neodymium and formation of Mg-Nd alloys in molten Chlorides. / Hua, Zhongsheng; Liu, Huan; Wang, Jian; He, Jiwen; Xiao, Saijun; Xiao, Yanping; Yang, Yongxiang.

In: ACS Sustainable Chemistry and Engineering, Vol. 5, No. 9, 2017, p. 8089-8096.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Hua, Z, Liu, H, Wang, J, He, J, Xiao, S, Xiao, Y & Yang, Y 2017, 'Electrochemical behavior of Neodymium and formation of Mg-Nd alloys in molten Chlorides' ACS Sustainable Chemistry and Engineering, vol. 5, no. 9, pp. 8089-8096. https://doi.org/10.1021/acssuschemeng.7b01708

APA

Hua, Z., Liu, H., Wang, J., He, J., Xiao, S., Xiao, Y., & Yang, Y. (2017). Electrochemical behavior of Neodymium and formation of Mg-Nd alloys in molten Chlorides. ACS Sustainable Chemistry and Engineering, 5(9), 8089-8096. https://doi.org/10.1021/acssuschemeng.7b01708

Vancouver

Hua Z, Liu H, Wang J, He J, Xiao S, Xiao Y et al. Electrochemical behavior of Neodymium and formation of Mg-Nd alloys in molten Chlorides. ACS Sustainable Chemistry and Engineering. 2017;5(9):8089-8096. https://doi.org/10.1021/acssuschemeng.7b01708

Author

Hua, Zhongsheng ; Liu, Huan ; Wang, Jian ; He, Jiwen ; Xiao, Saijun ; Xiao, Yanping ; Yang, Yongxiang. / Electrochemical behavior of Neodymium and formation of Mg-Nd alloys in molten Chlorides. In: ACS Sustainable Chemistry and Engineering. 2017 ; Vol. 5, No. 9. pp. 8089-8096.

BibTeX

@article{11ed2ec1dfb74321b958f5dd63b8b444,
title = "Electrochemical behavior of Neodymium and formation of Mg-Nd alloys in molten Chlorides",
abstract = "The electrochemical behavior of Nd(III) and its coreduction with Mg(II) were investigated on a molybdenum electrode at 1023 K in eutectic NaCl-KCl melts. The results indicate that the reduction of NdCl3 in NaCl-KCl melts is a one-step process with three electrons exchanged, and the reaction is an irreversible diffusion-controlled process at low scan rate with the calculated diffusion coefficient of about 6.8 × 10-5 cm2 s-1. After MgCl2 is introduced to the melts, the reduction of Nd(III) takes place at a more positive potential value due to the formation of Mg-Nd intermetallic compounds through electrochemical co-deposition and chemical reduction of Nd(III) ions by preferentially deposited Mg. The solid intermetallic compounds of Mg3Nd, Mg2Nd, and MgNd observed in open circuit chronopotentiometry curves are transformed to thermodynamically more stable Mg-rich phases of Mg12Nd and Mg41Nd5 when potentiostatic electrolysis at -2.10 V. It has been confirmed by X-ray diffraction and SEM-EDS microscopy that the cathodic deposits are composed of Mg, Mg12Nd, Mg41Nd5, and Nd. The present results confirm that it is an effective method for recycling of neodymium from waste NdFeB magnets by means of electrochemical formation of Mg-Nd alloys from NaCl-KCl-MgCl2-NdCl3 melts.",
keywords = "Co-deposition, Electrochemical behavior, Formation mechanism, Melts, Mg-Nd alloys",
author = "Zhongsheng Hua and Huan Liu and Jian Wang and Jiwen He and Saijun Xiao and Yanping Xiao and Yongxiang Yang",
year = "2017",
doi = "10.1021/acssuschemeng.7b01708",
language = "English",
volume = "5",
pages = "8089--8096",
journal = "ACS Sustainable Chemistry and Engineering",
issn = "2168-0485",
publisher = "American Chemical Society",
number = "9",

}

RIS

TY - JOUR

T1 - Electrochemical behavior of Neodymium and formation of Mg-Nd alloys in molten Chlorides

AU - Hua, Zhongsheng

AU - Liu, Huan

AU - Wang, Jian

AU - He, Jiwen

AU - Xiao, Saijun

AU - Xiao, Yanping

AU - Yang, Yongxiang

PY - 2017

Y1 - 2017

N2 - The electrochemical behavior of Nd(III) and its coreduction with Mg(II) were investigated on a molybdenum electrode at 1023 K in eutectic NaCl-KCl melts. The results indicate that the reduction of NdCl3 in NaCl-KCl melts is a one-step process with three electrons exchanged, and the reaction is an irreversible diffusion-controlled process at low scan rate with the calculated diffusion coefficient of about 6.8 × 10-5 cm2 s-1. After MgCl2 is introduced to the melts, the reduction of Nd(III) takes place at a more positive potential value due to the formation of Mg-Nd intermetallic compounds through electrochemical co-deposition and chemical reduction of Nd(III) ions by preferentially deposited Mg. The solid intermetallic compounds of Mg3Nd, Mg2Nd, and MgNd observed in open circuit chronopotentiometry curves are transformed to thermodynamically more stable Mg-rich phases of Mg12Nd and Mg41Nd5 when potentiostatic electrolysis at -2.10 V. It has been confirmed by X-ray diffraction and SEM-EDS microscopy that the cathodic deposits are composed of Mg, Mg12Nd, Mg41Nd5, and Nd. The present results confirm that it is an effective method for recycling of neodymium from waste NdFeB magnets by means of electrochemical formation of Mg-Nd alloys from NaCl-KCl-MgCl2-NdCl3 melts.

AB - The electrochemical behavior of Nd(III) and its coreduction with Mg(II) were investigated on a molybdenum electrode at 1023 K in eutectic NaCl-KCl melts. The results indicate that the reduction of NdCl3 in NaCl-KCl melts is a one-step process with three electrons exchanged, and the reaction is an irreversible diffusion-controlled process at low scan rate with the calculated diffusion coefficient of about 6.8 × 10-5 cm2 s-1. After MgCl2 is introduced to the melts, the reduction of Nd(III) takes place at a more positive potential value due to the formation of Mg-Nd intermetallic compounds through electrochemical co-deposition and chemical reduction of Nd(III) ions by preferentially deposited Mg. The solid intermetallic compounds of Mg3Nd, Mg2Nd, and MgNd observed in open circuit chronopotentiometry curves are transformed to thermodynamically more stable Mg-rich phases of Mg12Nd and Mg41Nd5 when potentiostatic electrolysis at -2.10 V. It has been confirmed by X-ray diffraction and SEM-EDS microscopy that the cathodic deposits are composed of Mg, Mg12Nd, Mg41Nd5, and Nd. The present results confirm that it is an effective method for recycling of neodymium from waste NdFeB magnets by means of electrochemical formation of Mg-Nd alloys from NaCl-KCl-MgCl2-NdCl3 melts.

KW - Co-deposition

KW - Electrochemical behavior

KW - Formation mechanism

KW - Melts

KW - Mg-Nd alloys

UR - http://www.scopus.com/inward/record.url?scp=85028941073&partnerID=8YFLogxK

U2 - 10.1021/acssuschemeng.7b01708

DO - 10.1021/acssuschemeng.7b01708

M3 - Article

VL - 5

SP - 8089

EP - 8096

JO - ACS Sustainable Chemistry and Engineering

T2 - ACS Sustainable Chemistry and Engineering

JF - ACS Sustainable Chemistry and Engineering

SN - 2168-0485

IS - 9

ER -

ID: 35662954