CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Electrochemical Behavior of Europium(III)-Europium(II) in LiF-NaF-KF Molten Salt
Huang, W; Tian, LF; She, CF; Jiang, F; Zheng, HY; Li, WX; Wu, GZ; Long, DW; Li, QN; longdewu@sinap.ac.cn; liqingnuan@sinap.ac.cn
2014
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume147Pages:114—120
AbstractThe transformation of Eu(III) to Eu(II) was confirmed in a fluoride eutectic, LiF-NaF-KF (46.5-11.5-42.0 mol%, FLiNaK) molten salt during a treatment of high temperature as high as 1023 K. The coexistence of Eu(III)-Eu(II) was characterized by X-ray photoelectron spectroscopy (XPS) and voltammetry method, and their concentrations were measured. The electrochemical behavior of Eu(III) and Eu(II) in the fluoride salt was investigated. The mechanism of the electrode reaction was determined using cyclic voltammetry (CV) and square wave voltammetry ( SWV). The results indicated a one-electron exchange process, corresponding to the reduction of Eu(III) to Eu(II) and the oxidation of Eu(II) to Eu(III). This process is reversible and diffusion-controlled. The diffusion coefficients (D) of Eu(III) and Eu(II) were determined using the conventional CV by changing the scanning rate and a modified method by changing the area of the working electrode successively. The values obtained by these two different methods were consistent. The temperature dependence of diffusion coefficient was investigated, and the activation energies of diffusion process were calculated to be 38.9 + 4.6 kJ mol(-1) for Eu(III) and 34.7 + 1.6 kJ mol(-1) for Eu(II), respectively. (C) 2014 Elsevier Ltd. All rights reserved.
KeywordSquare-wave Voltammetry Eutectic Licl-kcl Diffusion-coefficients Fuel-cycle Fluorides Electrodeposition Gadolinium Reduction Actinide Chloride
Indexed BySCI
Language英语
WOS IDWOS:000346178800015
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14112
Collection中科院上海应用物理研究所2011-2019年
Corresponding Authorlongdewu@sinap.ac.cn; liqingnuan@sinap.ac.cn
Recommended Citation
GB/T 7714
Huang, W,Tian, LF,She, CF,et al. Electrochemical Behavior of Europium(III)-Europium(II) in LiF-NaF-KF Molten Salt[J]. ELECTROCHIMICA ACTA,2014,147:114—120.
APA Huang, W.,Tian, LF.,She, CF.,Jiang, F.,Zheng, HY.,...&liqingnuan@sinap.ac.cn.(2014).Electrochemical Behavior of Europium(III)-Europium(II) in LiF-NaF-KF Molten Salt.ELECTROCHIMICA ACTA,147,114—120.
MLA Huang, W,et al."Electrochemical Behavior of Europium(III)-Europium(II) in LiF-NaF-KF Molten Salt".ELECTROCHIMICA ACTA 147(2014):114—120.
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