Reference : Hydrothermal synthesis of tailored new  promising phosphate particles for lithium an...
Scientific congresses and symposiums : Unpublished conference/Abstract
Physical, chemical, mathematical & earth Sciences : Chemistry
Hydrothermal synthesis of tailored new  promising phosphate particles for lithium and sodium ion batteries
Karegeya, Claude mailto [Université de Liège - ULiège > > > Form. doct. sc. (chimie - Bologne)]
Mahmoud, Abdelfattah mailto [Université de Liège > Département de chimie (sciences) > LCIS - GreenMAT >]
Sougrati Tahar, Moulay mailto []
Cloots, Rudi mailto [Université de Liège > Département de chimie (sciences) > LCIS - GreenMAT >]
Vertruyen, Bénédicte mailto [Université de Liège > Département de chimie (sciences) > Chimie inorganique structurale >]
Boschini, Frédéric mailto [Université de Liège > > Plateforme APTIS >]
Annual Meeting of the Belgian Ceramic Society
Belgian ceramic Society
VITO (Mol)
[en] Hydrothermal synthesis ; Operando XRD ; Operando Mössbauer
[en] The rechargeable Li-ion batteries dominate the currently used storage systems due to their unrivalled electrochemical properties. However, this technology needs more improvements to meet coast, high capacity, safety and environmental requirements. Current researches on Li-ion batteries are focusing on the development of safe and cheap electrode compounds with good electrochemical performance. Iron phosphate-based electrodes have attracted increasing interest due to their environmental compatibility, low cost and its promising electrochemical performance as positive electrode materials in LIB.

In this work, we report the electrochemical properties of Fex(PO4)(OH)y.zH2O) cathode material obtained by one-pot hydrothermal synthesis route, a technique which produces the particles with suitable properties for electrode application. We show that the addition of a conducting carbon (carbon black or carbon nanotubes) into the solution has a strong influence on reducing the size and tailoring morphology of material particles. These are among the main factors to enhance the electrochemical performance of the material.
Combined with electrochemical and XRD studies, operando Mössbauer analysis shows that Fex(PO4)(OH)y.zH2O) undergoes a reversible reduction/oxidation during lithium intercalation/ deintercalation processes.

This work was supported by the Walloon Region through the BATWAL project [PE Plan Marshall 2.vert]; and the Beware Fellowship Academia [2015-1, RESIBAT n° 1510399].
Researchers ; Professionals ; Students ; General public ; Others

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