Forschungszentrum Juelich Gmbh

Qianli Ma

Frank Tietz

Olivier Guillon

Tu Lan

Sahir Naqash

Provided is a method for producing an electrode for a solid-state battery comprising providing a multilayer solid ceramic electrolyte that comprises at least one dense layer having a total ion conductivity of at least 1 mS/cm at 25&#xb0; C. and at least one porous layer having continuous and open pores having an average pore diameter between 1 and 50 &#x3bc;m; providing an aqueous infiltration fluid comprising at least one organic additive that can be at least partially converted into carbon; introducing the aqueous infiltration fluid into the at least one porous layer of the multilayer solid ceramic electrolyte; and subjecting the multilayer solid ceramic electrolyte to a thermal treatment in the form of sintering in a reducing atmosphere at temperatures between 400&#xb0; C. and 900&#xb0; C., whereby the electrode material is synthesized from the precursor of the electrode material on the surface of the pores in situ.

Solid state battery and method for producing same

A method for preparing electrolyte material having a NASICON structure, based on a NaScZr(SiO)(PO) compound where 0&#x2264;x&#x3c;2. The method includes providing an acidic, aqueous solution which, according to a desired stoichiometry, comprises sodium, scandium and zirconium in the form of water-soluble nitrates, acetates or carbonates, and soluble silicates or orthosilicic acids or organic silicon compounds in dissolved form; subsequently adding phosphoric acid or ammonium dihydrogenphosphate or other soluble phosphates, according to the desired stoichiometry, complex zirconium dioxide phosphates forming as colloidal precipitations; and subsequently drying and calcining the mixture.

Electrolyte material having a NASICON structure for solid-state sodium ion batteries and method for the production thereof

A method for preparing a lithium titanium phosphate, wherein a sol-gel process is used to prepare the phosphate, includes producing a sol from source materials; converting the sol to a gel; and drying the gel to obtain a corresponding powder comprising the lithium titanium phosphate. In a substep, the method further includes adding titanium(IV) isopropoxide to water to produce precipitates of titanium hydroxide oxide, cooling a system down to a temperature of less than 10&#xb0; C., and redissolving the precipitates by adding nitric acid to form an aqueous TiOnitrate solution. The lithium titanium phosphate has a general composition LiMTi(PO)(SiO), wherein M=Al, Ga, In, Sc, V, Cr, Mn, Co, Fe, Y, La&#x2014;Lu, wherein 0&#x2264;x&#x2264;0.5, and wherein 0&#x2264;y&#x2264;0.5.

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Juelich, Germany

Qianli Ma