Development of Production Method of Fine Particle by Continuous Plasma-Induced Cathodic Discharge Electrolysis

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In this study, plasma-induced cathodic discharge electrolysis using a rotating disk anode was conducted in molten LiCl-KCl-CsCl electrolytes, and Ni nanoparticles with diameters of less than 10 nm were obtained. The obtained particles became smaller and more uniform when rotation speed of the disk anode increased until it reached 2,000 rpm; meanwhile, the size of the obtained particle hardly depended on the rotation speed when it exceeded 2,000 rpm. Regardless of rotation speeds, the electrolysis current (0.1-5.0 A) did not affect the size of the particle. The rotating disk anode-type electrolytic cell, therefore, controls the particle growth by the rotation speed of the disk anode.