Manufacturing cathode electrode structures for Na-S cells

摘要

A cathode structure for a sodium sulphur cell is formed of a stack of elements 12 of carbon fibre material or predominantly of carbon fibre material, each element being punched out of a sheet 10 of the material having fibres randomly oriented in planes parallel to the plane of the sheet. For a cylindrical cell, the elements 12 are of annular form with a central aperture 13.