| 摘要 |
Cell and batteries containing them employing a transition metal chalcogenide positive electrode (cathode) in combination with a liquid alkali metal haloaluminate. At operating temperatures, the positive electrode (cathode) of the invention comprises a solid matrix comprising electroactive cathode material permeated with and in physical and electrical contact with liquid alkali metal haloaluminate electrolyte. The positive and negative electrodes are separated with a solid alkali metal conducting electrolyte. The transition metal chalcogenide is not in direct physical contact with the solid electrolyte. Electric and ionic conductivity between the solid electrolyte and the positive electrode is mediated by the liquid alkali metal haloaluminate electrolyte. More specifically, the cells are sodium/iron sulfide cells. Batteries of the invention are useful for bulk energy storage, particularly for electric utility grid storage, as well as for electric vehicle propulsion. |
