LITHIUM ELECTROCHEMICAL ACCUMULATOR HAVING A BIPOLAR ARCHITECTURE AND OPERATING WITH A LITHIUM-SULPHUR COMPOUND ELECTRODE PAIR

摘要

The invention relates to a lithium electrochemical accumulator comprising at least a first electrochemical cell and at least a second electrochemical cell separated from one another by a current collecting substrate. A first face of the aforementioned substrate supports an electrode of the first electrochemical cell and a second face, opposite the first, supports an electrode, of opposite sign, of the second electrochemical cell. Each cell comprises a positive electrode and a negative electrode separated by an electrolyte. The invention is characterised in that the positive electrode comprises a lithium compound and the negative electrode comprises elementary sulphur.