K3NbF7's electrochemical characteristics in the NaCl-KCl molten salt system at the Mo electrode
Year: 2025
Type: article
Abstract: To explore the electrochemical behavior of Nb (IV) for form Nb metal, molten salt electrolysis was carried out in an NaCl-KCl melt containing K 3 NbF 7 at 750 °C. It was discovered that Nb (IV) reduces in three stages: Nb(IV)➔Nb(III)➔Nb(II)➔Nb，and reduction process of Nb(IV)➔Nb(III) was irreversible process controlled by diffusion mechanism . The instantaneous nucleation of niobium on the molybdenum electrode is observed in the KCl-NaCl-K 3 NbF 7 melt, which occurs at a potential of −3.06 V vs. Cl 2 /Cl − and a temperature of 750 °C, the niobium metal was deposited on Mo wire cathode by constant potential electrolysis, resulting in a high purity of 98.63 %.
Source: Electrochemistry Communications
Authors: Zhuan Zhao, Dongsheng Jiang, Yi Chen, Huan Zhang, Ruifang Wang, Shaolong Li, Jianxun Song, Yusi Che, Jilin He
Institution: Zhengzhou University
Language: English
Subfield: Fluid Flow and Transfer Processes
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,630
OpenAlex ID: W4409800185