Nickel-manganese composite hydroxide particles, method for producing same, positive electrode active material for nonaqueous electrolyte secondary batteries, method for producing positive electrode active material and nonaqueous electrolyte secondary dell

A technology of composite hydroxide and positive electrode active material, which is applied in the direction of non-aqueous electrolyte batteries, secondary batteries, nickel compounds, etc., can solve the problems of high particle size uniformity, battery capacity reduction, and selective degradation of fine particles, and achieve industrialization Effect of high value, high particle size uniformity, and excellent battery characteristics
CN103249678AActive Publication Date: 2013-08-14SUMITOMO METAL MINING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SUMITOMO METAL MINING CO LTD
Publication Date
2013-08-14

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Abstract

The subject of the invention provides nickel-manganese composite hydroxide particles having a small and uniform particle diameter and a hollow structure; and a method for producing the nickel-manganese composite hydroxide particles. When a nickel-manganese composite hydroxide is obtained by a crystallization reaction, an aqueous solution for nucleation, which contains a metal compound containing nickel, a metal compound containing manganese, and an ammonium ion donor, is controlled to have a pH value of 12.0-13.4 as measured at a reference liquid temperature of 25 DEG C and nucleation is carried out in an oxidizing atmosphere, and then an aqueous solution for particle growth, which contains the thus-formed nuclei, is controlled to have a pH value of 10.5-12.0 as measured at a reference liquid temperature of 25 DEG C and the nuclei are grown, while switching the atmosphere from the oxidizing atmosphere having an oxygen concentration of more than 1% by volume to a mixed atmosphere of an inert gas and oxygen with an oxygen concentration of 1% by volume or less.
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Description

technical field

[0001] The present invention relates to a nickel-manganese composite hydroxide particle and a production method thereof, a positive electrode active material for a non-aqueous electrolyte secondary battery using the nickel-manganese composite hydroxide particle as a raw material, a production method thereof, and the non-aqueous electrolyte A non-aqueous electrolyte secondary battery using a positive electrode active material for a secondary battery as a positive electrode material. Background technique

[0002] In recent years, with the popularization of portable electronic devices such as mobile phones and notebook personal computers, the development of small and lightweight non-aqueous electrolyte secondary batteries with high energy density has been eagerly expected. In addition, the development of a high-output secondary battery as a power source for driving an engine, particularly as a battery for a power source for conveyance equipment, has been earnest...

Claims

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