Electrochemical cell

Details Electrochemical cell Electrochemical cell

H - Electricity

01

M

H01M 4/24 (2006.01) H01M 4/58 (2006.01) H01M 10/39 (2006.01)

Patent

CA 2150040

The invention provides an electrochemical cell, a cathode therefor and methods of making them. The cell is of the high temperature alkali metal/transition metal halide type, having a molten sodium anode, a nickel/nickel chloride cathode, an essentially sodium aluminium chloride molten salt electrolyte and a solid electrolyte sodium ion conducting separator which separates the sodium from the molten salt electrolyte. The nickel/nickel chloride is dispersed in solid form in a porous electronically conductive electrolyte-permeable matrix which is impregnated by the molten salt electrolyte, and antimony in finely divided solid form is mixed with the nickel/nickel chloride in the matrix. The mass ratio of antimony to the nickel in the nickel chloride in the cell in its fully charged state is 2:100 - 130:100.

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