Estimation of the Relative Thickness of Gas-Diffusion Electrodes of Carbon-Black Blends in the Course of Electrosynthesis of the Peroxide Ion from Oxygen

The results of a study of electrosynthesis of hydrogen peroxide from oxygen in an alkaline electrolyte on gas-diffusion electrodes of acetylene carbon black and blends of acetylene carbon black and furnace black are compared. The relative thickness of gas-diffusion hydrophobic electrodes operating under inner-kinetic conditions is estimated from polarization curves. Improving the hydrogen peroxide removal from pores of the gas-diffusion electrodes made of carbon black blends with various hydrophilic and hydrophobic properties stabilizes the relative thickness of the electrodes in comparison with the electrodes of acetylene carbon black.