New sulfate useful as cathodic material in LIB
Référence
05158-01
Mots-clés
Statut des brevets
Priority patent application n° FR1251854 filed on Fébruary 29th , 2012 and entitled “Sulfates utiles comme matériaux d’électrodes”
Inventeurs
Jean-Marie TARASCON
Mohamed ATI
Jean Noël CHOTARD
Marine REYNAUD
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 sulfate material with chemical formula (Na,Li)xFey(SO4)z. Li2Fe2(SO4)3 is excluded.
DEVELOPMENT STAGE
Synthesis were made at a laboratory scale and electrochemical tests were done on the obtained powders.
BENEFITS
Classical synthesis (ionothermal route or solid state route)
Good electrochemical performances
Operating voltage of 3.8V
No fluor
INDUSTRIAL APPLICATIONS
Cathode material in LIB.
For further information, please contact us (Ref 05158-01)