Polyphenylene Sulfide-Asbestos-Brucite Composites. Part II*: Properties and Performance in Advanced Water Electrolysis

Abstract

Commercial crysotyle asbestos cardboard of 0.055 cm thickness and 0.44 V/w water regain volume per unit cardboard weight is a stable separator for advanced water electroly sis when coated with polyphenylene sulfide. The electrical resistance at the minimum 29% w/w coating level to guarantee separator stability has been found high (0.92 Π • cm2). Composite materials over a wide range of compositions have been further in vestigated by means of stepwise multivariable regression analysis and the relationships be tween chemical composition, morphology, water wettability and electrical resistance have been sought. The results indicate that a model composite fabricated from a more porous matrix should attain acceptable electrical resistance (≤ 0.25 Π • cm2) even at the mini mum PPS load which is required to maintain material stability.