катализатор

Electrochemical activity of electrodes for electrolysis of water is investigated. As catalysts coating Ni-S-Co, suspension LaNi_2.5Co_2.4Al_0.1 or their combinations were applied. As electrolyte at test of electrodes 30% KOH or NaOH is used. Current density varied in a range from 10 to 600 мА/cm² at temperature 20-80°C. When the temperature increases from 20 to 80°C the current density on cathodes with composite LaNi2.5Co2.4Alo.i/Ni-S-Co catalyst increases 4 times at constant potential E = –1.10 V (rel. Hg/HgO).

The conditions of the reduction synthesis of metallic rhodium nanoparticles, intended for catalysis of electrochemical reactions, proceeding on cathodes was investigated by the method hydrosol in water solution of TW-20 dispersity stabilizer in presence black-carbon XC-72 and without it. The formation in resulting colloidal system of monodispersed rhodium particles with average size not more than 50 nm and their stability was confirmed by the method of dynamic light scattering.