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1. (WO2013156888) LOW COST SI-BASED NEGATIVE ELECTRODES WITH ENHANCED CYCLING PERFORMANCE

Pub. No.:    WO/2013/156888    International Application No.:    PCT/IB2013/052686
Publication Date: Fri Oct 25 01:59:59 CEST 2013 International Filing Date: Fri Apr 05 01:59:59 CEST 2013
IPC: H01M 10/0568
H01M 4/48
H01M 4/13
Applicants: UMICORE
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE
UMICORE KOREA LTD.
Inventors: DELPUECH, Nathalie
MAZOUZI, Driss
LESTRIEZ, Bernard
GUYOMARD, Dominique
ROUE, Lionel
Title: LOW COST SI-BASED NEGATIVE ELECTRODES WITH ENHANCED CYCLING PERFORMANCE
Abstract:
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.