FIELD: electronic engineering. SUBSTANCE: method involves forming carbide rectifying metals coating on the cathode surface. Suspension of the following composition is used for coating application, wt.-% organic binder, for example, polyvinyl acetate 0.5-4; ethanol or acetone 30-40; finely dispersed carbon, for example, graphite 2.5-15, and rectifying metal powder the rest. Coating is applied by suspension pouring into corpus at corpus rotation at the rate 1500-300 rev/min followed by caking at 1300-1500 C. Invention ensures to realize the specific charge of capacitors up to 21000 21000 мкЛл/см3. EFFECT: improved method of coating preparing.
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