摘要:
An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same.[Solution]A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.
摘要:
An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same.[Solution]A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.
摘要:
Provided are nickel manganese composite hydroxide particles that are a precursor for forming cathode active material comprising lithium nickel manganese composite oxide having hollow structure of particles having a small and uniform particle size for obtaining a non-aqueous electrolyte secondary battery having high capacity, high output and good cyclability.When obtaining the nickel manganese composite hydroxide particles from a crystallization reaction, an aqueous solution for nucleation, which includes at least a metallic compound that contains nickel and a metallic compound that contains manganese, and does not include a complex ion formation agent that forms complex ions with nickel, manganese and cobalt, is controlled so that the temperature of the solution is 60° C. or greater, and so that the pH value that is measured at a standard solution temperature of 25° C. is 11.5 to 13.5, and after nucleation is performed, an aqueous solution for particle growth, which includes the nuclei that were formed in the nucleation step and does not substantially include a complex ion formation agent that forms complex ions with nickel, manganese and cobalt, is controlled so that the temperature of the solution is 60° C. or greater, and so that the pH value that is measured at a standard solution temperature of 25° C. is 9.5 to 11.5, and is less than the pH value in the nucleation step.
摘要:
This invention provides a nickel oxide powder material, a production process thereof with high efficiency, a raw material composition for use in the same, and an anode material using the nickel oxide powder material. The nickel oxide powder material, when used as an anode material for a solid oxide fuel cell, can reduce heat shrinkage percentage in calcination to reduce a shrinkage difference from other component, and can suppress the occurrence of cracking, delamination, warpage and the like during calcining. Also in power generation after re-reduction after exposure of the anode once to an oxidizing atmosphere, for example, due to the disruption of the fuel supply, deterioration of microstructure of the anode can be suppressed, and the voltage drop percentage of the cell can be reduced. The nickel oxide powder material is used in an anode material constituting a solid oxide fuel cell and is characterized in that spinel compound represented by compositional formula: NiM2O4 wherein M represents a metal element is formed inside or on the surface of the nickel oxide powder or at the interface between the powder particles.
摘要翻译:本发明提供一种氧化镍粉末材料,其高效率的制造方法,使用该氧化镍粉末材料的原料组合物和使用该氧化镍粉末材料的负极材料。 当用作固体氧化物燃料电池的负极材料时,氧化镍粉末材料可以降低煅烧时的热收缩率,以减少与其它组分的收缩差异,并且可以抑制在其中发生开裂,分层,翘曲等现象 煅烧 另外,在将阳极曝光一次至氧化气氛后的再还原后的发电中,例如由于燃料供给的破坏,能够抑制阳极的组织的劣化,电池的电压下降百分比 减少 氧化镍粉末材料用于构成固体氧化物燃料电池的负极材料中,其特征在于,其中M表示金属元素的组成式:NiM 2 O 4表示的尖晶石化合物形成在氧化镍粉末的表面内或表面上,或者在 粉末颗粒之间的界面。
摘要:
This invention provides a nickel oxide powder material, a production process thereof with high efficiency, a raw material composition for use in the same, and an anode material using the nickel oxide powder material. The nickel oxide powder material, when used as an anode material for a solid oxide fuel cell, can reduce heat shrinkage percentage in calcination to reduce a shrinkage difference from other component, and can suppress the occurrence of cracking, delamination, warpage and the like during calcining. Also in power generation after re-reduction after exposure of the anode once to an oxidizing atmosphere, for example, due to the disruption of the fuel supply, deterioration of microstructure of the anode can be suppressed, and the voltage drop percentage of the cell can be reduced. The nickel oxide powder material is used in an anode material constituting a solid oxide fuel cell and is characterized in that spinel compound represented by compositional formula: NiM2O4 wherein M represents a metal element is formed inside or on the surface of the nickel oxide powder or at the interface between the powder particles.
摘要翻译:本发明提供一种氧化镍粉末材料,其高效率的制造方法,使用该氧化镍粉末材料的原料组合物和使用该氧化镍粉末材料的负极材料。 当用作固体氧化物燃料电池的负极材料时,氧化镍粉末材料可以降低煅烧时的热收缩率,以减少与其它组分的收缩差异,并且可以抑制在其中发生开裂,分层,翘曲等现象 煅烧 另外,在将阳极曝光一次至氧化气氛后的再还原后的发电中,例如由于燃料供给的破坏,能够抑制阳极的组织的劣化,电池的电压下降百分比 减少 氧化镍粉末材料用于构成固体氧化物燃料电池的负极材料中,其特征在于,其中M表示金属元素的组成式:NiM 2 O 4表示的尖晶石化合物形成在氧化镍粉末的表面内或表面上,或者在 粉末颗粒之间的界面。
摘要:
A method for producing copper fine particles by heating and reducing an oxide, hydroxide, or salt of copper included in a solution of ethylene glycol, diethylene glycol, or triethylene glycol, the method comprising controlling a total halogen content of the solution to be less than 20 ppm by mass relative to copper and adding a water-soluble polymer as a dispersant such as polyethyleneimine and a noble metal compound or noble metal colloid for nucleation to the solution. This method makes it possible to provide copper fine particles for use in a wiring material, which are very fine as small as 50 nm or less in average particle size and high dispersibility, extremely low undesirable halogen content, and can be sintered at a low temperature.
摘要:
A method for producing copper fine particles by heating and reducing an oxide, hydroxide, or salt of copper included in a solution of ethylene glycol, diethylene glycol, or triethylene glycol, the method comprising controlling a total halogen content of the solution to be less than 20 ppm by mass relative to copper and adding a water-soluble polymer as a dispersant such as polyethyleneimine and a noble metal compound or noble metal colloid for nucleation to the solution. This method makes it possible to provide copper fine particles for use in a wiring material, which are very fine as small as 50 nm or less in average particle size and high dispersibility, extremely low undesirable halogen content, and can be sintered at a low temperature.