POSITIVE ELECTRODE MATERIAL FOR NICKEL-HYDROGEN SECONDARY BATTERY AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE MATERIAL FOR NICKEL-HYDROGEN SECONDARY BATTERY

• Main Authors: SATOMI NAOTOSHI, HATA MIKIO, HANAMURA NAOYA
• Format: Patent
• Language: English; Japanese
• Published: 24.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a positive electrode material for a nickel-hydrogen secondary battery and a method for manufacturing the positive electrode material for the nickel-hydrogen secondary battery which can improve the characteristics of a nickel-hydrogen secondary battery by reducing the volume resistivity.SOLUTION: A positive electrode material for a nickel-hydrogen secondary battery has a differential pore distribution with a pore diameter range of 1.7 nm or more and 300 nm or less, in which the maximum value of the highest peak of the differential pore volume is located in the pore diameter range of 1.7 nm or more and 10.0 nm or less.SELECTED DRAWING: None 【課題】本発明は、体積抵抗率が低減されていることでニッケル水素二次電池の特性を向上させることができる、ニッケル水素二次電池用正極材料及びニッケル水素二次電池用正極材料の製造方法を提供する。【解決手段】細孔直径の範囲が１．７ｎｍ以上３００ｎｍ以下である微分細孔分布において、微分細孔体積の最高ピークの極大値が、細孔直径１．７ｎｍ以上１０．０ｎｍ以下の範囲に位置するニッケル水素二次電池用正極材料。【選択図】なし