Title:
PROCESS FOR PRODUCTION OF POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2011/052607
Kind Code:
A1
Abstract:
Disclosed is a process for producing a lithium-containing oxide having excellent charge-discharge cycle durability, a low free alkali content, high discharge capacity, high filling properties and high volume capacity density.
Specifically disclosed is a process for producing a positive electrode material for a lithium ion secondary battery, which is characterized by comprising: bringing a lithium-containing oxide represented by general formula LiaNibCocMndMeO2 (wherein M represents at least one element selected from the group consisting of transition metal elements excluding Ni, Co and Mn, aluminum, tin, zinc, and alkali earth metals; 0.95 ≤ a ≤ 1.2; 0 ≤ b ≤ 1; 0 ≤ c ≤ 1; 0 ≤ d ≤ 0.6 and 0 ≤ e ≤ 0.2, wherein a + b + c + d + e = 2) into contact with an aqueous zirconium solution having a zirconium concentration of 5 to 1000 ppm; and separating the aqueous zirconium solution from the lithium-containing oxide, thereby producing the positive electrode material.
Inventors:
TATSUMI KOJI (JP)
KAWASATO TAKESHI (JP)
KAWASATO TAKESHI (JP)
Application Number:
PCT/JP2010/069000
Publication Date:
May 05, 2011
Filing Date:
October 26, 2010
Export Citation:
Assignee:
AGC SEIMI CHEMICAL CO LTD (JP)
TATSUMI KOJI (JP)
KAWASATO TAKESHI (JP)
TATSUMI KOJI (JP)
KAWASATO TAKESHI (JP)
International Classes:
H01M4/525; C01G53/00; H01M4/1391; H01M4/505; H01M10/052; H01M10/0566; H01M10/058
Domestic Patent References:
| WO2007102407A1 | 2007-09-13 |
Foreign References:
| JP2005019244A | 2005-01-20 | |||
| JP2010118312A | 2010-05-27 | |||
| JP2004175609A | 2004-06-24 | |||
| JP2005346956A | 2005-12-15 | |||
| JP2003500318A | 2003-01-07 |
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
Spring name Kenji (JP)
Download PDF: