Abstract

Barium nickel sulfide (BaNiS 2) was investigated as a cathode material in high temperature molten salt cells using lithium—aluminum alloy as the anode and a eutectic mixture of lithium chloride and potassium chloride immobilized with magnesium oxide as the electrolyte. Results are presented on the cathode utilization, cathode energy and power densities obtained at current densities of 0.05 to 2.0 A/cm 2 at 400 °C. The performance of these cells is also compared with the performance of similar cells using nickel monosulfide or its mixture with barium sulfide as cathodes. The electrode reactions occurring at the positive electrode in these cells during charge and discharge operations are also discussed.

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