Patent ID: 8038865
Filing Date: 2011-10-18
Classification: C25B,H01M,Y02E

Abstract:
1. A method for reducing the permeability of a microporous liquid-permeable diaphragm of an electrolytic diaphragm cell comprising an anolyte compartment, a catholyte compartment and a liquid-permeable diaphragm, said diaphragm separating the catholyte compartment from the anolyte compartment and comprising a base of fibrous material substantially resistant to the environment within the electrolytic cell, which method comprises adding to the anolyte compartment particles of spheroidal ceramic microspheres that are at least partially resistant to the environment within the electrolytic cell, said microsphere particles (a) being used in an amount and (b) having a nominal size distribution that are sufficient to reduce the permeability of the liquid permeable diaphragm.