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New fluorosulfate useful as cathodic material in LIB

Référence

04328-01

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)

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