A new immobilized-alkali H2/O2 fuel cell

A new kind of fuel cell has been designed and constructed. This is called an immobilized-alkali H2/O2 single fuel cell, where the electrolyte is embedded in a porous matrix. Also, a different approach to electrode production for alkaline fuel cells is considered. Electrodes are single-layer, Teflon-bonded, gas-diffusion type and prepared by the pressing technique. Details of the preparation for these electrodes and their physical characterization by means of BET analysis, porosimetry, scanning electron microscopy and electrochemical evaluation (including Tafel and potentiostaic studies) are reported. The voltage–current behaviour of the fuel cell is determined under different operational conditions. The efficiency is 66% at a temperature of 25°C and a pressure of 1 bar.