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公开(公告)号：EP4324794A1
公开(公告)日：2024-02-21
申请号：EP22787826.1
申请日：2022-02-09
发明人： SATOMI, Naotoshi , HATA, Mikio , HANAMURA, Naoya
摘要： A positive electrode material for a nickel metal hydride secondary battery and a method for producing the positive electrode material for a nickel hydrogen secondary battery, capable of improving characteristics of a nickel metal hydride secondary battery by lowering volume resistivity, are provided. The positive electrode material for a nickel metal hydride secondary battery has, in a differential pore distribution in which a pore diameter range is 1.7 nm or more and 300 nm or less, a local maximum value of a highest peak of a differential pore volume positioned in a range of a pore diameter of 1.7 nm or more and 10.0 nm or less.
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公开(公告)号：EP3799166A1
公开(公告)日：2021-03-31
申请号：EP19807727.3
申请日：2019-05-16
摘要： A positive electrode active material includes a composite particle. The composite particle includes a core particle and a covering layer. The core particle includes a nickel composite hydroxide. The nickel composite hydroxide is represented by the following formula: Ni x1 Zn 1-x1-y1 Co y1 (OH) 2 (where x1 and y1 satisfy 0.90≤x1 3 absorption edge has a peak top in a range not less than 780.5 eV.
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公开(公告)号：EP4011835A1
公开(公告)日：2022-06-15
申请号：EP20849719.8
申请日：2020-08-06
发明人： SATOMI, Naotoshi , IIDA, Yasutaka , HATA, Mikio
摘要： Provided is a nickel composite hydroxide capable of reducing a calcination temperature when producing a positive electrode active material, a positive electrode active material using the nickel composite hydroxide as a precursor, and a method for producing the same. The nickel composite hydroxide for a precursor of a positive electrode active material of a non-aqueous electrolyte secondary battery, wherein when in the nickel composite hydroxide, a peak intensity of a diffraction peak on a (200) plane in powder X-ray diffraction measurement using CuKα rays is defined as α, and a peak intensity of a diffraction peak on a (013) plane in powder X-ray diffraction measurement using CuKα rays is defined as β, a value of α/β is 0.75 or more and 0.95 or less, and the nickel composite hydroxide comprises Ni, Co, Mn, and one or more additive elements M selected from the group consisting of Al, Fe, Ti and Zr.
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公开(公告)号：EP3846262A1
公开(公告)日：2021-07-07
申请号：EP19854420.7
申请日：2019-07-08
发明人： HANAMURA, Naoya , TANAKA, Satoshi , HATA, Mikio
摘要： The present invention provides a positive electrode active material particle for a secondary battery, having excellent electrical conductivity as the whole positive electrode active material particle for a secondary battery, by which fluctuation of volume resistivity depending on the size of the particle diameter of the positive electrode active material particle for a secondary battery is suppressed, and which forms a particle size distribution width having a predetermined spread, and a method for producing the positive electrode active material particle for a secondary battery. The positive electrode active material particle for a secondary battery is a positive electrode active material particle for a secondary battery, containing a metal and/or a metal compound; and a nickel-containing composite compound, wherein
a value of X represented by the following equation (I) is 0.00 or more and 0.08 or less. X = C − A / B wherein A means a molar ratio of an amount of the metal in the metal and/or the metal compound to an amount of metals in the nickel-containing composite compound at a secondary particle diameter where a cumulative volume percentage is 90% by volume (D90) among the positive electrode active material particles for a secondary battery, B means a molar ratio of an amount of the metal in the metal and/or the metal compound to an amount of the metals in the nickel-containing composite compound at a secondary particle diameter where the cumulative volume percentage is 50% by volume (D50) among the positive electrode active material particles for a secondary battery, and C means a molar ratio of an amount of the metal in the metal and/or the metal compound to an amount of the metals in the nickel-containing composite compound at a secondary particle diameter where the cumulative volume percentage is 10% by volume (D10) among the positive electrode active material particles for a secondary battery.
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