POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS SECONDARY BATTERY, POSITIVE ELECTRODE AND SECONDARY BATTERY

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS SECONDARY BATTERY, POSITIVE ELECTRODE AND SECONDARY BATTERY

PROBLEM TO BE SOLVED: To improve the load characteristic of a battery without hindering the active material filling performance into a positive electrode. SOLUTION: This positive electrode active material is obtained by adjusting the primary grains of the Li compound oxide mainly composed of at leas...

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Hauptverfasser: NISHINA MASAYUKI, NISHISAKO SUSUMU, OSANAI HIDEYO
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator NISHINA MASAYUKI
NISHISAKO SUSUMU
OSANAI HIDEYO
description PROBLEM TO BE SOLVED: To improve the load characteristic of a battery without hindering the active material filling performance into a positive electrode. SOLUTION: This positive electrode active material is obtained by adjusting the primary grains of the Li compound oxide mainly composed of at least one kind or more of CO, Ni, Mn and Li to the porous secondary grains through each process of calcination, pulverization and dispersion, spray, granulation and burning. The positive electrode active material having 0.1-1 μm of pore mean diameter with the pore distribution measurement by the mercury press-in method and 0.01 cm3/g or more of total volume of the pores having a diameter at 0.01-1 μm is used. Furthermore, as the secondary grains, the spherical secondary grains having 4-20 μm of mean grain diameter, 1.8 g/cm2 or more of tap density, 500 kg/cm2 or more of inflection point of the volume reduction rate by the Cooper plot method is desirable.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS SECONDARY BATTERY, POSITIVE ELECTRODE AND SECONDARY BATTERY
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