| 摘要 |
In a high temperature rechargeable electrochemical cell 10 which comprises a cell housing divided by a separator 14 into an anode compartment and a cathode compartment, the anode compartment containing an active anode substance 16 which is a molten alkali metal M, the separator being capable of conducting ions of the alkali metal of the anode therethrough, the cathode compartment containing a cathode 18 comprising an electronically conductive electrolyte-permeable porous matrix 18 having, dispersed therein, a solid active cathode substance the matrix being impregnated with a molten salt electrolyte, the cathode 18 comprises also, in contact with the matrix 18, a porous, electrolyte-permeable reservoir 26 of material which is electrochemically and chemically inert in the cathode environment eg. carbon felt, said reservoir having an ability to wick the molten salt electrolyte at the operating temperature of the cell which ability is less than the ability of the matrix to wick said molten salt electrolyte. <IMAGE> |
