SEPARATOR-SPACER, ELECTRODE, AND USE THEREOF IN ELECTROCHEMICAL SYSTEMS

摘要

A separator-spacer sheet (28) has a microporous mid-portion surface (30) recessed from non-porous side portions (31). Projections on the mid-portion surfaces (30) maintain a spaced compartmental distance between those surfaces and a sheet electrode (29). The electrode (29) has a flat conductive surface (33). An electro-chemical cell system contains both the separator-spacer (28) and electrode (29) in close contact, and electrolyte flows through the compartments between the projections. The system can be one or more stacks of such cells, constituting a battery, electrolyser or fuel cell. A leak- and impact-resistant electrochemical construction comprises an inner compartment for a bromine-rich phase, a second chamber for one electrolyte, a third chamber surrounding the other two for a second electrolyte and an outer casing surrounding all three.