Electrode for electrochemical cell

A high-temperature, secondary electrochemical cell including a fusible salt electrolyte and solid particles of electrochemically active material in a plurality of positive and negative electrodes comprising:

• a cell housing of electrically conductive material having top and bottom walls, at least two end walls and at least two side walls defining an internal cell volume,
• said electrodes are of plate-like shape aligned in an alternating array of positive and negative electrodes along their thicknesses with major side surfaces of said electrodes in said array parallel to and facing adjacent major side surfaces of electrodes of opposite polarity;
• layers of frangible, porous electrically insulative material selected from the group consisting of ceramic powder and ceramic felt disposed between adjacent side surfaces of the positive and negative electrodes in said array;
• and said electrodes having outer side walls at their major side surfaces of rigid perforated sheets of electrically conductive material in contiguous supporting contact with said layers of frangible, porous electrically insulative material and having outer edge walls at minor edge surfaces corresponding to electrode thickness communicating with said outer side walls to define an electrode compartment for containing said particles of electrochemically active material.