Influence of nature of the fluoride ion on the electrochemical behaviors of Nb(V) in molten NaCl-KCl

被引：2
|
作者：
Liu, Shanshan [1 ]
Li, Chenyao [1 ]
Wang, Dongxin [2 ]
Li, Junyi [2 ]
Yuan, Rui [1 ]
Che, Yusi [1 ]
He, Jilin [1 ]
Song, Jianxun [1 ]
机构：
[1] Zhengzhou Univ, Henan Prov Ind Technol Res Inst Resources & Mat, Zhengzhou 450001, Henan, Peoples R China
[2] Northwest Rare Met Mat Res Inst Ningxia Co Ltd, State Key Lab Special Rare Met Mat, Shizuishan 753000, Peoples R China
来源：
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2022年 / 26卷 / 02期
关键词：
NaCl-KCl; F-; Nbn+] ratio; Reduction mechanism; Reduction potential; TITANIUM IONS; COHERENT DEPOSITS; CHLORIDE-FLUORIDE; REFRACTORY-METALS; ALKALI CHLORIDE; NIOBIUM IONS; ELECTRODEPOSITION; EQUILIBRIUM; REDUCTION; TI(III);
D O I：
10.1007/s10008-021-05089-4
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In this research, the reduction mechanism of Nb(V) under various [F-]/[Nbn+] ratios (alpha) was investigated by a series of electrochemical techniques, such as square wave voltammetry (SWV) and chronopotentiometry (CP). We previously studied the electrode reduction process of Nb(V) and revealed that was Nb(V) -> Nb(III) -> Nb(I) -> Nb in NaCl-KCl molten salt. It was found in this research that the electrode reduction process of Nb(V) ion was shortened to Nb(V) -> Nb(III) -> Nb when alpha was equal to 1.0; furthermore, the electrode reduction process of Nb(V) ion transforms to Nb(V) -> Nb(IV) -> Nb when alpha was greater than or equal to 5.0. Moreover, the reaction mechanism was also discussed in this work. Metallic niobium was collected on a molybdenum electrode under the condition of higher fluoride content after electrolysis in the melt.
引用
收藏
页码：449 / 456
页数：8
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