Porous diaphragm for electrochemical cell.

摘要

A porous diaphragm (24) is disclosed for use in an electrochemical cell having at least one porous and self-draining electrode (18). Said diaphragm provides a means of obtaining greater uniformity of flow of an electrolyte through the diaphragm even when exposed to an electrolyte hydraulic head pressure which varies over the depth of the electrolyte in the cell. The porous diaphragm of the invention comprises a plurality of layers of a microporous polyolefin film or a composite diaphragm of a plurality of layers of said microporous polyolefin film (32) and a support fabric (34).