Title:
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 FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2015/115547
Kind Code:
A1
Abstract:
A staring material aqueous solution containing at least Ni and Mn, an aqueous solution containing an ammonium ion donor and an alkali solution are supplied into a reaction vessel, and are mixed so as to obtain an aqueous reaction solution and to have nickel-manganese composite hydroxide particles crystallized. In this connection, the oxygen concentration in the reaction vessel is controlled to be 3.0% by volume or less, the temperature of the aqueous reaction solution is controlled to be 35-60°C, and the nickel ion concentration is controlled to be 1,000 mg/L or more. Consequently, there are obtained nickel-manganese composite hydroxide particles which are represented by general formula NixMnyMt(OH)2+α (wherein 0.05 ≤ x ≤ 0.95, 0.05 ≤ y ≤ 0.95, 0 ≤ t ≤ 0.20, x + y + t = 1, 0 ≤ α ≤ 0.5 and M represents one or more elements selected from among Co, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W), and which are composed of secondary particles, each of said secondary particles being composed of a plurality of primary particles aggregated together. The average circularity of the secondary particles having particle diameters that are 70% or more of the average particle diameter is 0.82 or more, and the tap density of the nickel-manganese composite hydroxide particles is 2.20 g/cm3 or more.
Inventors:
YAMAJI KOJI (JP)
HONMA TAKEHIDE (JP)
USHIO RYOZO (JP)
HONMA TAKEHIDE (JP)
USHIO RYOZO (JP)
Application Number:
PCT/JP2015/052526
Publication Date:
August 06, 2015
Filing Date:
January 29, 2015
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C01G53/00; H01M4/505; H01M4/525
Domestic Patent References:
| WO2011083648A1 | 2011-07-14 | |||
| WO2014175191A1 | 2014-10-30 |
Foreign References:
| JP2008174444A | 2008-07-31 | |||
| JPH11130440A | 1999-05-18 | |||
| JP2006265086A | 2006-10-05 | |||
| JP2011181193A | 2011-09-15 |
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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