Glossary

SEI ( Solid Electrolyte Interphase )

Solid products generated by the electrochemical decomposition of the electrolyte (liquid) on the surface of an electrode. To ensure proper operation of the Li-ion battery, the SEI formed on the graphite must be passivating (dense, insoluble) and ionically conductive (Li ⁺ ).

Carbone graphitisable/non graphitisable ; soft carbon/hard carbon

Carbons disordered in varying degrees from a crystallographic point of view. Graphitisable carbon comes in the form of relatively orderly but small-sized stacks of graphene sheets. When subjected to high temperature heat treatment, it can be transformed into graphite. In the case of...