Lithium electrochemical accumulator with a bipolar architecture operating on the basis of a pair of lithiated sulfur compound electrodes

摘要

The invention relates to an electrochemical lithium accumulator comprising at least one first electrochemical cell and at least one electrochemical cell separated from each other by a current collector substrate, which substrate supports on a first face an electrode of said first electrochemical cell and on a second face opposite to said first face, an electrode of opposite sign of said second electrochemical cell, each cell comprising a positive electrode and a negative electrode separated by an electrolyte, characterized in that the positive electrode comprises a lithiated compound and the negative electrode comprises elemental sulfur.

主权项

1. An electrochemical lithium accumulator, comprising bipolar architecture comprising at least one first electrochemical cell and at least one second electrochemical cell separated from each other by a current collector substrate, which current collector substrate supports on a first face, an electrode of said first electrochemical cell and on a second face opposite to said first face, an electrode of opposite sign of said second electrochemical cell, each cell comprising a positive electrode and a negative electrode separated by an electrolyte wherein the positive electrode comprises a lithiated compound selected from polyanionic lithiated transition metal compounds, lithiated transition metal oxides and mixtures thereof and the negative electrode comprises elemental sulfur.