New fluorosulfate useful as cathodic material in LIB
Référence
04328-01
Mots-clés
Statut des brevets
Priority patent application n° FR1151864 filed on March 8th , 2011 and entitled “Nouveau matériau fluoré utilisable comme matière active d’électrode”
Inventeurs
Prabeer BARPANDA
Michel ARMAND
Jean-Marie TARASCON
Mohamed ATI
Jean Noël CHOTARD
Statut commercial
Exclusive or non-exclusive license
Laboratoire
Laboratoire de Réactivité et Chimie des Solides, (LRCS UMR6007) Amiens, France.
Description
CONTEXT
Since the introduction of the first Li-ion battery by Sony in the nineties, demand for batteries with enhanced performances is increasing. LIB are widely used in laptop, cellular phones, electronic products (cameras, mp3 readers,…). They also penetrating the market of power tools and are studied also as candidates in hybrid/electric vehicles.
Conventional materials for cathodes are oxides such as LCO, NMC or NCA, spinelles phases or olivine structures (LFP).
Sulfate-based materials are interesting as they should theoritically have higher potential than phosphate-based materials.
TECHNICAL DESCRIPTION
The invention described a new family of fluorosulfate material having a triplite structure with its synthesis via dry process
Members of this family are the Fe/Mn solid solution LiFe1-xMnxSO4F.
DEVELOPMENT STAGE
Synthesis were made at a laboratory scale and electrochemical tests were done on the obtained powders.
BENEFITS
Easy synthesis (fast and economic)
Good electrochemical performances
Operating voltage of 3.9V (to be compared with 3.6 V of LiFeSO4F or 3.45 V of LFP)
INDUSTRIAL APPLICATIONS
Cathode material in LIB.
For further information, please contact us (Ref 04328-01)