SI LOW COST SI-BASED NEGATIVE ELECTRODES WITH ENHANCED CYCLING PERFORMANCE

摘要

The present invention relates to a rechargeable battery including an anode, a cathode, and an electrolyte, The electrolyte comprises an SEI film former, - the cathode comprises a micrometer of a Si-based active material, a polymeric binder material and a conductive agent, at least a part of the surface of the Si-based active material being composed of Si-OCO-R groups, Si being part of the active material, Lt; / RTI is a polymer chain of a binder material.