GAS-GENERATING POROUS-ELECTRODES WITH SOLID POLYMERIC ELECTROLYTES - SURFACE DEPOSITION OF CATALYSTS

Electron-microscopic studies show that, in two-component gas-generatin g porous electrodes with a solid polymeric electrolyte (SPE), the aver age size of SPE grains is much greater than the average size of platin um-black grains (PEG). The PEG can both fill the space between the SPE grains and cover their surface. The calculations in this work show th at the preferential surface deposition of PEG makes it possible to sub stantially reduce (by two and even three orders of magnitude) the nece ssary amount of expensive catalysts-platinum-group metals.