Title:
COMPOSITE HYDROXIDE CONTAINING TRANSITION METAL AND METHOD FOR PRODUCING SAME, POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES AND METHOD FOR PRODUCING SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2016/208413
Kind Code:
A1
Abstract:
Provided is a positive electrode active material which can improve all of the battery capacity, output properties and cycle properties of a secondary battery simultaneously. In the production of a composite hydroxide containing a transition metal, which is a precursor of a positive electrode active material, by producing a core by adjusting the pH value of an aqueous reaction solution to a value falling within the range from 12.0 to 14.0 (core production) and then growing the core by adjusting the pH value of the aqueous reaction solution to a value falling within the range from 10.5 to 12.0 (particles growth), the following atmosphere control procedure is carried out at least one round: in the initial stage of each of the core production and the particle growth, the reaction atmosphere is adjusted to a non-oxidative atmosphere; and in the middle of the particle growth, the reaction atmosphere is switched to an oxidative atmosphere having an oxygen concentration of more than 5 vol% by directly introducing an oxidative gas into the aqueous reaction solution while continuing the supply of a raw material aqueous solution and then the reaction atmosphere is switched to a non-oxidative atmosphere by directly introducing an inert gas into the aqueous reaction solution while continuing the supply of the raw material aqueous solution.
Inventors:
TOMA TAKAHIRO (JP)
AIDA TAIRA (JP)
KOMUKAI TETSUFUMI (JP)
KAMATA YASUTAKA (JP)
AIDA TAIRA (JP)
KOMUKAI TETSUFUMI (JP)
KAMATA YASUTAKA (JP)
Application Number:
PCT/JP2016/067255
Publication Date:
December 29, 2016
Filing Date:
June 09, 2016
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
H01M4/525; C01G53/00; H01M4/505
Domestic Patent References:
| WO2014181891A1 | 2014-11-13 | |||
| WO2012169274A1 | 2012-12-13 |
Foreign References:
| JP2013144625A | 2013-07-25 | |||
| JP2001354418A | 2001-12-25 | |||
| JPH11312519A | 1999-11-09 |
Attorney, Agent or Firm:
Kiwa International (JP)
Patent business corporation Takakazu patent firm (JP)
Patent business corporation Takakazu patent firm (JP)
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