Study on Molten Salt Electrolysis of Consumable Anode TiCxOy
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摘要: 研究了自制钛可溶阳极Ti CxOy(x≈0.50,y≈0.50)在简单氯化物(NaCl-KCl)熔盐体系、低价钛离子浓度为3.5%的(NaCl-KCl-TiClx)熔盐体系中的电化学溶解行为,同时考察了相应体系下的阴极行为。结果表明,在上述两种熔盐体系中,阳极Ti CxOy(x≈0.50,y≈0.50)均能发生电化学溶解。在简单氯化物熔盐体系中不利于得到阴极产物;在含低价钛离子的熔盐体系中有利于阴极产物的稳定得到,阳极的电流效率能够稳定在50%以上(以三价钛放电计算),阳极的溶解率从简单氯化物(NaCl-KCl)熔盐体系中的80%左右下降到50%。Abstract: Electrochemical dissolution behaviors of self-made consumable anode TiCxOy （x ≈ 0.50,y ≈0.50） as well as cathode in simple chloride （NaCl-KCl） molten salt system and NaCl-KCl-TiClx molten salt system containing 3.5% low valence titanium ion were researched. The results indicate that the consumable anode TiCxOy can normally dissolve in both of the molten salt systems mentioned above,but few products deposit on the cathode in NaCl-KCl molten salt system. Cathode products are favorably obtained in NaCl-KCl-TiClx molten salt system with anode current efficiency more than 50%. Dissolving rate of anode decreases to 50% in NaCl-KCl-TiClx molten salt system from 80% in NaCl-KCl system.
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