The invention provides a high temperature electrochemical power storage cell which has a cathode compartment containing a molten alkali metal aluminium halide molten salt electrolyte and a cathode which comprises an electronically conductive electrolyte-permeable porous matrix. The matrix has, dispersed...http://www.google.es/patents/US5234778?utm_source=gb-gplus-sharePatente US5234778 - Electrochemical cell