PROCEDE DE FABRICATION D'UN ACCUMULATEUR DU TYPE LITHIUM-ION

The invention deals with a method of preparing a lithium-ion accumulator comprising a positive electrode and a negative electrode which are disposed on either side of an electrolyte, the positive electrode comprising, as active material, a lithium-based material, a method comprising the following st...

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Bibliographic Details
Main Authors DELOBEL BRUNO, MASSE FLORENCE, REYNIER YVAN, CHAKIR MOHAMED
Format Patent
LanguageFrench
Published 17.11.2017
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:The invention deals with a method of preparing a lithium-ion accumulator comprising a positive electrode and a negative electrode which are disposed on either side of an electrolyte, the positive electrode comprising, as active material, a lithium-based material, a method comprising the following steps: a) a step of depositing lithium salt on the surface of the positive electrode, before placement in the accumulator; b) a step of assembling the positive electrode, the negative electrode and the electrolyte; and c) a step of forming a passivation layer on the surface of the negative electrode with the lithium ions arising from the decomposition of the lithium salt by applying a first charge to the abovementioned assembly.
Bibliography:Application Number: FR20150060050