Title:
リチウム二次電池正極用のリチウム含有複合酸化物の製造方法
Document Type and Number:
Japanese Patent JP4666653
Kind Code:
B2
Abstract:
A process to produce a positive electrode active material for a lithium secondary battery, having a large volume capacity density and high safety, uniform coating properties, charge and discharge cyclic durability and low temperature characteristics even at a high charge voltage is disclosed. The positive electrode active material is a lithium-containing composite oxide represented by the formula LipNxMyOzFa, wherein N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Sn, Zn, Al, alkaline earth metal elements, and transition metal elements other than the N element, O.9<=p<=l.1, 0.97<=x<=l.00, 0<=y<=0.03, 1.9<=z<=2.1, x+y=1 and 0<=a<=0.02. The N element source powder having an average particle size of from 2 to 20 mum, is impregnated with the M element salt aqueous solution, and the prepared dry powder comprising the N element, M element, a lithium source and optionally a fluorine source is fired at from 700 to 1 ,050° C. in an oxygen-containing atmosphere.
Inventors:
Ken Kawasato
Megumi Uchida
Saito Nao
Kazuhara Manabu
Megumi Uchida
Saito Nao
Kazuhara Manabu
Application Number:
JP2006513570A
Publication Date:
April 06, 2011
Filing Date:
May 13, 2005
Export Citation:
Assignee:
AGC Seimi Chemical Co., Ltd.
International Classes:
H01M4/505; C01G1/00; C01G45/00; C01G51/00; C01G53/00; H01M4/50; H01M4/52; H01M4/525; H01M4/131; H01M4/48; H01M4/485; H01M10/0525; H01M10/36
Domestic Patent References:
| JP2002037630A | 2002-02-06 | |||
| JP2002037631A | 2002-02-06 | |||
| JP2000128546A | 2000-05-09 | |||
| JP2000260432A | 2000-09-22 | |||
| JP2004119221A | 2004-04-15 | |||
| JP2003068298A | 2003-03-07 | |||
| JP2001283847A | 2001-10-12 | |||
| JP2000243393A | 2000-09-08 | |||
| JPH08227713A | 1996-09-03 |
Attorney, Agent or Firm:
Kenji Izumina
Toshiharu Ogawa
Ryozo Yamamoto
Toshiharu Ogawa
Ryozo Yamamoto