Spontaneous Polarization of Hydrogen-Saturated Composite Materials

Abstract

The paper focuses on the effect of spontaneous electric field emergence in mixtures of cesium nitrate and/or potassium permanganate microparticles with nickel, aluminum and aluminum oxide nanoparticles in the hydrogen atmosphere. It was established that increase in the share of Ni, Al or Al₂O₃ nanoparticles in the mix with KMnO₄ powder from 0 to 0.25 (in terms of weight) leads to gradual decrease in electric field density in the powder to zero (T = 22–250°C). The authors identified the stimulating effect of nickel nanoparticles on hydrogen-initiated electric field emergence in the CsNO₃ powder. It was established that spontaneous polarization of powders is caused by dissociative chemisorption of hydrogen molecules on the surface of KMnO₄ and CsNO₃ particles.