钼电极处NaCl-KCl熔盐体系中K3NbF7的电化学特性

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications Pub Date : 2025-04-25 DOI:10.1016/j.elecom.2025.107943

Zhuan Zhao , Dongsheng Jiang , Yi Chen , Huan Zhang , Ruifang Wang , Shaolong Li , Jianxun Song , Yusi Che , Jilin He

{"title":"钼电极处NaCl-KCl熔盐体系中K3NbF7的电化学特性","authors":"Zhuan Zhao , Dongsheng Jiang , Yi Chen , Huan Zhang , Ruifang Wang , Shaolong Li , Jianxun Song , Yusi Che , Jilin He","doi":"10.1016/j.elecom.2025.107943","DOIUrl":null,"url":null,"abstract":"<div><div>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<sub>3</sub>NbF<sub>7</sub> 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<sub>3</sub>NbF<sub>7</sub> melt, which occurs at a potential of −3.06 V vs. Cl<sub>2</sub>/Cl<sup>−</sup> 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 %.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"176 ","pages":"Article 107943"},"PeriodicalIF":4.7000,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"K3NbF7's electrochemical characteristics in the NaCl-KCl molten salt system at the Mo electrode\",\"authors\":\"Zhuan Zhao , Dongsheng Jiang , Yi Chen , Huan Zhang , Ruifang Wang , Shaolong Li , Jianxun Song , Yusi Che , Jilin He\",\"doi\":\"10.1016/j.elecom.2025.107943\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>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<sub>3</sub>NbF<sub>7</sub> 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<sub>3</sub>NbF<sub>7</sub> melt, which occurs at a potential of −3.06 V vs. Cl<sub>2</sub>/Cl<sup>−</sup> 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 %.</div></div>\",\"PeriodicalId\":304,\"journal\":{\"name\":\"Electrochemistry Communications\",\"volume\":\"176 \",\"pages\":\"Article 107943\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2025-04-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrochemistry Communications\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1388248125000827\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ELECTROCHEMISTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrochemistry Communications","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1388248125000827","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}

引用次数: 0

摘要

为了探究Nb （IV）在Nb金属形态中的电化学行为，在含K3NbF7的NaCl-KCl熔体中进行了750℃的熔盐电解。发现Nb（IV）的还原分三个阶段：Nb(IV) Nb(III) Nb(II) Nb，而Nb(IV) Nb（III）的还原过程是受扩散机制控制的不可逆过程。在- 3.06 V vs. Cl2/Cl -和750℃的温度下，在KCl-NaCl-K3NbF7熔体中，铌在钼电极上瞬间成核，通过恒电位电解沉积在钼线阴极上，得到了纯度高达98.63%的高纯度金属铌。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

K3NbF7's electrochemical characteristics in the NaCl-KCl molten salt system at the Mo electrode

To explore the electrochemical behavior of Nb (IV) for form Nb metal, molten salt electrolysis was carried out in an NaCl-KCl melt containing K₃NbF₇ 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-K₃NbF₇ melt, which occurs at a potential of −3.06 V vs. Cl₂/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 %.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Electrochemistry Communications 工程技术-电化学

CiteScore

8.50

自引率

3.70%

发文量

160

审稿时长

1.2 months

期刊介绍： Electrochemistry Communications is an open access journal providing fast dissemination of short communications, full communications and mini reviews covering the whole field of electrochemistry which merit urgent publication. Short communications are limited to a maximum of 20,000 characters (including spaces) while full communications and mini reviews are limited to 25,000 characters (including spaces). Supplementary information is permitted for full communications and mini reviews but not for short communications. We aim to be the fastest journal in electrochemistry for these types of papers.