Forschungszentrum Julich Gmbh

Forschungszentrum Juelich Gmbh

Topsoe Fuel Cell A/s

Kernforschungszentrum Julich Gmbh

Elringklinger Ag

Frank Tietz

Olivier Guillon

Qianli Ma

Hans Peter Buchkremer

Hans-Peter Buchkremer

Mohsine Zahid

Robert Vassen

Niels Christiansen

Aristides Naoumidis

Detlev Stöver

Willem J Quadakkers

Ashok K Gupta

Detlev Stoever

Frank Meschke

Vladimir Shemet

Petru Gordes

Joachim Laatsch

Helmut Ullmann

Wolfgand Jungen

Rajendra Nath Basu

Dimitrios Simwonis

Jens-Erich Döring

Franziska Traeger

Roberto Siegert

Tu Lan

Dag Hathiramani

Nicolaas J J Dekker

Gijsbertus Rietveld

Qingxi Fu

Thomas Kiefer

Sahir Naqash

Uwe Maier

Mahmoud Al Daroukh

Vladimir Vashuk

Mosine Zahid

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.

Solid-state electrolytes for lithium batteries and process for production thereof

The invention relates to an anode for a high-temperature fuel cell having an anode substrate and/or a functional anode layer, comprising a porous ceramic structure having a first predominantly electron-conducting phase with the general empirical formula SrLnTiOwherein Ln=Y, Gd to Lu and 0.03&#x3c;x&#x3c;0.2, and having a second predominantly ion-conducting phase component comprising yttrium or scandium-stabilized zirconium dioxide (YSZ or ScSZ). In the anode substrate and/or the functional anode layer, the ratio by volume of the first phase to the second phase ranges from 80:20 to 50:50, and particularly from 70:30 to 60:40. The porosity of the entire anode ranges between 15 and 50% by volume. The anode additionally comprises a catalyst in the amount of no more than 15% of the total volume, which is disposed on the surface of the pores of the ceramic structure.

Ceramic material combination for an anode of a high-temperature fuel cell

The invention relates to a electrically conductive steel-ceramic connection comprising a steel interconnector and an electrically conductive ceramic joining layer arranged thereon. The interconnector comprises a ferritic steel containing Cr in a quantity ranging from 18 to 24% by weight. The ceramic layer contains perovskite of a formula LnSrMnCoOor LnSrFeCoO, wherein 0.1&#x2266;x&#x2266;0.4, 0.1&#x2266;y&#x2266;0.6, 0&#x2266;&#x3b4;&#x2266;x/2 and Ln=La&#x2014;Lu. The inventive steel-ceramic connection is usable for a high-temperature fuel cell and regularly exhibits good adhesive properties and a low transition resistance (initial transition resistance R approximately equal to 0.01 &#x3a9;cm). Said steel-ceramic connection makes it possible to advantageously introduce a ferritic steel into high-temperature fuel cells. The inventive method for producing said steel-ceramic connection consists in pre-treating an inserted ceramic powder exhibiting good sinterability during an assembly process and during the fuel cell operation.

Electrically conductive steel-ceramic composite and process to manufacture it

The aim of the invention is to produce complete high temperature fuel cells by means of thermal injection processes (e.g. atmospheric plasma injection, vacuum plasma injection, high speed flame injection). The production method is especially simplified and is economical by virtue of the fact that the carrier substrate is also produced on a base with the aid of a thermal injection method. The base or an intermediate layer placed thereon can be advantageously dissolved or decomposed such that the carrier substrate provided with layers arranged thereon can be separated in a very simple manner from the base which becomes unnecessary. Said method advantageously enables the production of all layers of a high temperature fuel cell, exclusively with the aid of a thermal injection method.

Method for producing a layer system comprising a metallic carrier and an anode functional layer

A method is disclosed for producing a protective coating on a chromium oxide-forming substrate, which comprises the steps of:

Protective coating for substrates that are subjected to high temperatures and method for producing said coating

A method is disclosed for producing a protective coating on a chromium oxide forming substrate, in which on a surface of the chromium oxide forming substrate, a mixture of CoO, MnO, and CuO in suspension is applied, or a powdered CoO, MnO, and CuO is applied to said surface; at a temperature of 500 to 1000&#xb0; C., to form a protective coating on the chromium oxide forming substrate, said protective coating consisting essentially of a uniform, gas-tight, compact, adherent chromium free spinel layer on which is coated a metal oxide layer of CoO, MnO, and CuO. Also disclosed are interconnectors for high temperature fuel cells as the chromium oxide forming substrates on which the protective coating is applied.

Method for producing a protective coating for substrates that are subjected to high temperatures and form chromium oxide

The invention relates to a method for the production of an electrode for use at high temperatures, in which an electrode green compact is formed from a ceramic slip. The slip is formed from at least one solid electrolyte material as well as a metal oxide powder. The green compact is dried and sintered. A porous hard granular material of solid electrolyte material is used in the slip, the mean diameter of the metal oxide powder grains not exceeding or not substantially exceeding the mean diameter of the pores of the hard granular material. An electrode having a temperature-stable conductivity is obtained according to the invention. The area of use of the electrode is typically in high-temperature fuel cells.

Method for producing an electrode that has a temperature-stabilized conductivity

A ceramic material with a sintering temperature below 1000&deg; C. and a Perovskite Structure with the general stoichiometric composition A&prime; A&Prime; B&prime; B&Prime; B&prime;&Prime; O whereby A&prime;&equals;Y, La, Pr, Nd; A&Prime;&equals;Mg, Ca, Sr, Ba; B&prime;&equals;Mn, Ti, V, Cr, Ni, Zn, Pb, Sb, W, Zr; B&Prime;&equals;Co; B&prime;&Prime;&equals;Cu, Bl; O<x<&equals;0.4; 0<&equals;y<&equals;0.1; 0.09<a<&equals;0.6 and; 0.09<&equals;b<&equals;0.6.

Ceramic material and the production thereof

Production of catalyst layers on diaphragms for low-temperature fuel cells

In an electrode for a fuel cell which has a porous self-supporting layer and another layer with catalytic properties disposed on said self-supporting layer, the self-supporting layer has a thickness several times greater than that of the layer with the catalytic properties and consists of a cermet comprising Al.sub.2 O.sub.3 or TiO.sub.2 to which Ni is admixed.

Electrode substrate for fuel cell

Growing community of inventors

Jülich, Germany

Frank Tietz