Hydro-quebec

Fundacion Centro De Investigacion Cooperativa De Energias Alternativas Cic Energigune Fundazioa

Cic Energigune

Teofilo Rojo

Abdelbast Guerfi

Andrea Paolella

Montse Galceran Mestres

Montse Casas-Cabanas

Karim Zaghib

Michel Armand

Michel Bernard Armand

Lucienne Buannic

Devaraj Shanmukaraj

Brahim Orayech

Damien Saurel

Frederic Aguesse

Laida Otaegui Ameztegui

Irune Villaluenga

Gurpreet Singh

Hicham Ben Youcef

Olivine-type compounds, their preparation and use in cathode materials for sodium-ion batteries. The olivine-type compounds may be obtained by a direct synthesis embodying a hydrothermal method. The method may include preparing an aqueous mixture including a M-containing compound, a M'-containing compound and a M″-containing compound to obtain a M-M′-M″ mixture; adding a P-containing compound to the mixture M-M′-M″ mixture to obtain a M-M′-M″-P mixture; adding a Na-containing compound to the M-M′-M″-P mixture to obtain a Na-M-M′-M″-P mixture; and introducing the Na-M-M′-M″-P mixture into an autoclave to perform crystal growth and obtain the compound of general formula NaMM′M″PO.

-type compounds: method for their preparation and use in cathode materials for sodium-ion batteries

This disclosure provides for Olivine-type compounds, their preparation and use in cathode materials for sodium-ion batteries. The olivine-type compounds of the invention are obtained by a direct synthesis embodying a hydrothermal method.

Olivine-type compounds: method for their preparation and use in cathode materials for sodium-ion batteries

The present invention relates to a sodium-ion battery comprising a positive electrode compartment comprising a positive electrode, said positive electrode comprising a Na-insertion compound; a negative electrode compartment comprising a negative electrode, said negative electrode comprising metallic sodium; and an electrolyte composition comprising a solid sodium-ion conductive ceramic electrolyte and a catholyte comprising a metallic salt with formula MY, wherein M is a cation selected from an alkali metal and an alkali-earth metal; and Y is an anion selected from [RSONSOR], CFSO, C(CN), B(CO)and BF(CO), wherein Rand Rare independently selected from fluorine or a fluoroalkyl group. The device is able to operate below the melting point of the anode component.

Sodium ceramic electrolyte battery

The present invention refers to a method for preparing a solid polymer electrolyte based on modified cellulose, the method comprising the steps of: a) lithiation or sodiation of at least a hydroxyl group of each repeating unit of a 'cellulose' to obtain Li(cellulose) or Na(cellulose); b) functionalization of the Li(cellulose) or Na(cellulose) obtained in step a), in the presence of an aprotic solvent by reacting it with an organic linker, wherein the organic linker serves to covalently attach at least one organic salt to the 'cellulose', and the use of the solid polymer electrolyte in lithium or sodium secondary batteries.

Solid polymer electrolyte based on modified cellulose and its use in lithium or sodium secondary batteries

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Alava, Spain

Teofilo Rojo