钽
电解
氟化物
无机化学
熔盐
电解质
电化学
化学
离子
电解法
氯
材料科学
冶金
电极
物理化学
有机化学
作者
Xuyang Bai,Shaolong Li,Jilin He,Jianxun Song
标识
DOI:10.1149/1945-7111/ac8379
摘要
In the process of molten salt electrolysis, the influence of the composition of the electrolyte on the current efficiency and electrolysis quality is a key issue that needs to be studied urgently. Thus, the interaction between tantalum ions and anions, coordination competition between chlorine ions and fluoride ions in the electrochemical metallurgy of tantalum metal are investigated in this paper. Their effects on the reduction mechanism of tantalum ions was also studied. Moreover, the chemical coordination mechanism of tantalum ions in the above molten salts were revealed through electrochemical tests and chemical analysis. By adding fluoride ions, the reduction step of tantalum ions is reduced from two-step to one-step, which simplifies the reduction process, avoids the current empty consumption caused by the disproportionation reaction of low-valent tantalum ions, and optimizes the particle size of the product.
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