NICKEL COMPOSITE HYDROXIDE AND PROCESS FOR PRODUCING SAME, POSITIVE ACTIVE MATERIAL FOR NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY AND PROCESS FOR PRODUCING SAME, AND NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY

Title:

Document Type and Number:

WIPO Patent Application WO/2012/169274

Kind Code:

A1

Abstract:

[Problem] To provide a positive active material which has a moderate particle diameter and has high evenness in particle diameter and a nickel composite hydroxide which is for use as a precursor for the positive active material. [Solution] When a nickel composite hydroxide is obtained through a crystallization reaction, an aqueous solution for nucleation which contains both a metal compound at least containing nickel and an ammonium ion source is used to conduct nucleation after having been regulated so as to have a pH of 12.0-14.0 at a solution temperature of 25ºC, and thereafter the resultant aqueous solution, which is for particle growth and which contains formed nuclei, is regulated so as to have a pH that, at a solution temperature of 25ºC, is 10.5-12.0 and lower than in the nucleation step, thereby growing the particles. This particle growth is conducted in a non-oxidizing atmosphere having an oxygen concentration of 1 vol.% or lower, over a period which ranges from initiation of the particle growth step and which accounts for more than 40% of the whole period of the particle growth step. Furthermore, the stirring power per unit volume in at least the nucleation step is regulated to 0.5-4 kW/m3.

More Like This:

WO/2021/058941	PROCESS
JP6470380	Lithium composite metal compound, positive electrode active material for lithium secondary battery, positive electrode for lithium secondary battery and lithium secondary battery
JP2023166220	CATHODE ACTIVE MATERIAL, LITHIUM ION SECONDARY BATTERY, AND, METHOD FOR MANUFACTURING CATHODE ACTIVE MATERIAL

Inventors:

FUKUI ATSUSHI (JP)
INOUE KATSUYA (JP)
ODA SHUHEI (JP)
TOYA HIROYUKI (JP)

Application Number:

PCT/JP2012/059101

Publication Date:

December 13, 2012

Filing Date:

April 03, 2012

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SUMITOMO METAL MINING CO (JP)
FUKUI ATSUSHI (JP)
INOUE KATSUYA (JP)
ODA SHUHEI (JP)
TOYA HIROYUKI (JP)

International Classes:

H01M4/525; C01G53/00; H01M4/505

Foreign References:

JP2010192424A	2010-09-02
JP2005008461A	2005-01-13
JPH05290832A	1993-11-05
JP2004210560A	2004-07-29
JP2008147068A	2008-06-26
JP2003086182A	2003-03-20
JP2004253174A	2004-09-09

Other References:

CHEMISTRY LETTERS, vol. 30, no. 8, 2001, pages 744
See also references of EP 2720305A4

Attorney, Agent or Firm:

Kiwa International (JP)
Patent business corporation Takakazu patent firm (JP)

Download PDF:

View/Download PDF PDF Help

Claims:

Previous Patent: METHOD FOR PRODUCING PNEUMATIC TIRE

Next Patent: METHOD FOR FIXING OPTICAL FIBER, AND METHOD FOR MANUFACTURING LASER MODULE