LOW COST SI-BASED NEGATIVE ELECTRODES WITH ENHANCED CYCLING PERFORMANCE

摘要

A rechargeable battery comprising a positive electrode, a negative electrode and an electrolyte, wherein:
- the electrolyte comprises a SEI film-forming agent, and
- the negative electrode comprises a micrometric Si based active material, a polymeric binder material and a conductive agent, wherein at least part of the surface of the Si based active material consists of Si-OCO-R groups, Si being part of the active material, and R being the polymeric chain of the binder material.