Abstract: A niobate powder for a piezoelectric application. The niobate powder includes a general composition of Li(Na/K)NbO3 and a carbon content per BET surface area of the niobate powder of from 10 to 100 ppm/(m2/g). The BET surface area is determined in accordance with DIN ISO 9277. The carbon content is determined via a non-dispersive infrared absorption.

Abstract: To provide a positive electrode active material of a lithium ion battery which has a large discharge capacity, excellent cycle characteristics, and suppressed gas generation. Resolution Means: A lithium metal composite oxide powder for use in a positive electrode active material for a lithium ion battery, the powder thereof having a composition of LiaNibCocAldO2 (wherein, a=0.8 to 1.2, b=0.7 to 0.95, c=0.02 to 0.2, d=0.005 to 0.1, and b+c+d=1) treated with an aqueous solution of an organic metal salt and soluble aluminum salt, and not causing volume expansion due to gas generation.

Abstract: A lithium metal composite oxide powder for use in a positive electrode active material for a lithium ion battery has a composition of LiaNibCocAldO2 (wherein, a=0.8 to 1.2, b=0.7 to 0.95, c=0.02 to 0.2, d=0.005 to 0.1, and b+c+d=1). The powder has been treated with an aqueous solution of an organic metal salt and soluble aluminum salt and does not cause volume expansion due to gas generation. A positive electrode active material with the lithium metal composite oxide powder has a large discharge capacity, excellent cycle characteristics, and suppressed gas generation.

Abstract: To provide a positive electrode active material of a lithium ion battery which has a large discharge capacity, excellent cycle characteristics, and suppressed gas generation. Resolution Means: A lithium metal composite oxide powder for use in a positive electrode active material for a lithium ion battery, the powder thereof having a composition of LiaNibCocAldO2 (wherein, a=0.8 to 1.2, b=0.7 to 0.95, c=0.02 to 0.2, d=0.005 to 0.1, and b+c+d 1) treated with an aqueous solution of an organic metal salt and soluble aluminum salt, and not causing volume expansion due to gas generation.

Abstract: To show an LNCAO-type positive electrode active material for a lithium ion battery having a high discharge capacity per unit volume and excellent discharging capacity-holding properties. Nickel-lithium metal composite oxide powder includes a nickel-lithium metal composite oxide represented by General Formula (1) described below: LixNi1-y-zMyNzO1.7-2.2??(1), in which the breakdown strength of secondary particles is in a range of 80 MPa or less, the density is 3.30 g/cm3 or higher when compressed at a pressure of 192 MPa, and the density is 3.46 g/cm3 or higher when compressed at a pressure of 240 MPa. A method for producing the nickel-lithium metal composite oxide powder includes a water washing step after a firing step for producing a nickel-lithium metal composite oxide powder precursor.

Abstract: Problem To provide a lithium ion battery positive electrode active material having a reduced amount of a lithium residue and an excellent volumetric capacity. Solution A powder is formed of particles of a lithium-nickel-cobalt-manganese composite oxide having a composition: LiaNibCocMndO2 (0.8?a?1.2, 0.7?b?0.95, 0.05?c?0.33, 0.05?d?0.33, and b+c+d=1), in which an average particle diameter (volume-based average diameter) of the powder is more than 10.0 ?m and less than 16.0 ?m, a specific surface area of the powder by a BET method using nitrogen adsorption is more than 0.5 m2/g and less than 2.0 m2/g, and the powder has been subjected to a water washing treatment.

Abstract: To show an LNCAO-type positive electrode active material for a lithium ion battery having a high discharge capacity per unit volume and excellent discharging capacity-holding properties. Nickel-lithium metal composite oxide powder includes a nickel-lithium metal composite oxide represented by General Formula (1) described below: LixNi1-y-zMyNzO1.7-2.2 ??(1), in which the breakdown strength of secondary particles is in a range of 80 MPa or less, the density is 3.30 g/cm3 or higher when compressed at a pressure of 192 MPa, and the density is 3.46 g/cm3 or higher when compressed at a pressure of 240 MPa. A method for producing the nickel-lithium metal composite oxide powder includes a water washing step after a firing step for producing a nickel-lithium metal composite oxide powder precursor.

Abstract: A process for producing a homogenous multi compound system which is hydroxide- and/or oxide-based includes a first alternative process comprising providing a first and a second refractory metal in respective hydrofluoric solutions, and mixing the first and second hydrofluoric solutions to provide a mixed hydrofluoric solution comprising a dissolved first and second refractory metal. A second alternative process comprises dissolving the first and the second refractory metal in an alternative mixed hydrofluoric solution. The mixed hydrofluoric solution or the alternative mixed hydrofluoric solution is precipitated with a precipitant to provide a solids mixture in a suspension. The first and second refractory metal is from the group consisting of Mo, W, Nb, Re, Zr, Hf, V, Sb, Si, Al, and Ta. The first and second refractory metal are different. At least one of the first and second refractory metal is provided as a fluoro and/or as an oxyfluoro complex.

Abstract: Electrolyte for an electrolyte-supported high-temperature fuel cell includes zirconium(IV) oxide doped with from 3.5 mol % to 6.5 mol % of ytterbium(III) oxide. The electrolyte has a thermal expansion coefficient (TEC) based on 30° C. of from 10.6*10?6 K?1 to 11.1*10?6 K?1 at 800° C.

Abstract: A process for producing anodes includes providing a foil comprising tantalum or niobium. A surface of the foil is oxidized so as to form oxides on the foil surface. The foil is heated so that the oxides formed on the foil surface diffuse into the foil. A paste comprising a powder selected from the group consisting of a tantalum powder, a niobium powder, a niobium oxide powder and mixtures thereof is applied to the foil. The foil with the applied paste is sintered.

Abstract: A process for producing anodes includes providing a foil comprising tantalum or niobium. A surface of the foil is oxidized so as to form oxides on the foil surface. The foil is heated so that the oxides formed on the foil surface diffuse into the foil. A paste comprising a powder selected from the group consisting of a tantalum powder, a niobium powder, a niobium oxide powder and mixtures thereof is applied to the foil. The foil with the applied paste is sintered.

Abstract: A process for producing a solid electrolyte capacitor with an anode comprising a sintered fine NbOx powder, where 0.5<x<1.7, includes forming a green anode body. The forming is essentially performed without applying a pressure. The green anode body is sintered so as to provide a sintered anode body. The sintered anode body is electrolytically oxidized so as to provide an electrolytically oxidized anode body. The electrolytically oxidized anode body is provided with a cathode so as to provide the solid electrolyte capacitor.

Abstract: A process for producing a homogenous multi compound system which is hydroxide- and/or oxide-based includes a first alternative process comprising providing a first and a second refractory metal in respective hydrofluoric solutions, and mixing the first and second hydrofluoric solutions to provide a mixed hydrofluoric solution comprising a dissolved first and second refractory metal. A second alternative process comprises dissolving the first and the second refractory metal in an alternative mixed hydrofluoric solution. The mixed hydrofluoric solution or the alternative mixed hydrofluoric solution is precipitated with a precipitant to provide a solids mixture in a suspension. The first and second refractory metal is from the group consisting of Mo, W, Nb, Re, Zr, Hf, V, Sb, Si, Al, and Ta. The first and second refractory metal are different. At least one of the first and second refractory metal is provided as a fluoro and/or as an oxyfluoro complex.

Abstract: The invention relates to a pulverulent zirconium oxide containing metal oxides from the group consisting of scandium, yttrium, rare earths and mixtures thereof, processes for producing them and their use in fuel cells, in particular for the production of electrolyte substrates for ceramic fuel cells.

Abstract: A process for producing a solid electrolyte capacitor with an anode comprising a sintered fine NbOx powder, where 0.5<x<1.7, includes providing a green anode body. The green anode body is sintered so as to provide a sintered anode body. The sintered anode body is formed so as to provide a formed anode body, wherein the forming is essentially performed without applying a pressure. The formed anode body is provided with a cathode so as to provide the solid electrolyte capacitor.

Abstract: Electrolyte for an electrolyte-supported high-temperature fuel cell includes zirconium(IV) oxide doped with from 3.5 mol % to 6.5 mol % of ytterbium(III) oxide. The electrolyte has a thermal expansion coefficient (TEC) based on 30° C. of from 10.6*10?6 K?1 to 11.1*10?6 K?1 at 800° C.

Abstract: The invention relates to a pulverulent zirconium oxide containing metal oxides from the group consisting of scandium, yttrium, rare earths and mixtures thereof, processes for producing them and their use in fuel cells, in particular for the production of electrolyte substrates for ceramic fuel cells.

Abstract: The invention relates to the use of cyano-substituted thiophenes as electrolyte additives for protecting nonaqueous, rechargeable lithium batteries from overcharging, and lithium batteries comprising these additives.