Title:
COMPOSITE POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERY AND BATTERY USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2008/001791
Kind Code:
A1
Abstract:
Disclosed is a composite positive electrode material for lithium ion batteries,
which especially enables to achieve excellent high-rate discharge characteristics
in a battery. Also disclosed are a slurry, positive electrode and battery using
such a composite positive electrode material. Specifically disclosed is a composite
positive electrode material for lithium ion batteries, which contains a positive
electrode active material (a), a conductive substance (b) having a primary particle
diameter of 10-100 nm and/or a fibrous conductive substance (c) having a fiber
diameter of from 1 nm to 1 μm, and a conductive substance (d) having an aspect
ratio of 2-50. This composite positive electrode material for lithium ion batteries
is obtained by mixing the conductive substance (d) with a composition containing
the positive electrode active material (a), the conductive substance (b) and/or
the conductive substance (c), which composition is obtained by dispersing the
positive electrode active material (a), the conductive substance (b) and/or
the conductive substance (c) in a solvent to a state where they are forcibly dispersed,
and then agglutinating them.
Inventors:
OKI KAZUO (JP)
FUKUMOTO YASUHISA (JP)
AKAGI RYUICHI (JP)
NISHIMURA KENICHI (JP)
KANEKO TAKETO (JP)
MIURA TAMAKI (JP)
SAITO TAKAMITSU (JP)
KAWAI MIKIO (JP)
FUKUMOTO YASUHISA (JP)
AKAGI RYUICHI (JP)
NISHIMURA KENICHI (JP)
KANEKO TAKETO (JP)
MIURA TAMAKI (JP)
SAITO TAKAMITSU (JP)
KAWAI MIKIO (JP)
Application Number:
PCT/JP2007/062846
Publication Date:
January 03, 2008
Filing Date:
June 27, 2007
Export Citation:
Assignee:
KAO CORP (JP)
NISSAN MOTOR (JP)
OKI KAZUO (JP)
FUKUMOTO YASUHISA (JP)
AKAGI RYUICHI (JP)
NISHIMURA KENICHI (JP)
KANEKO TAKETO (JP)
MIURA TAMAKI (JP)
SAITO TAKAMITSU (JP)
KAWAI MIKIO (JP)
NISSAN MOTOR (JP)
OKI KAZUO (JP)
FUKUMOTO YASUHISA (JP)
AKAGI RYUICHI (JP)
NISHIMURA KENICHI (JP)
KANEKO TAKETO (JP)
MIURA TAMAKI (JP)
SAITO TAKAMITSU (JP)
KAWAI MIKIO (JP)
International Classes:
H01M4/36; H01M4/131; H01M4/1391; H01M4/50; H01M4/505; H01M10/0525; H01M10/36
Foreign References:
| JPH11176446A | 1999-07-02 | |||
| JPH08138678A | 1996-05-31 | |||
| JP2001126733A | 2001-05-11 | |||
| JP2000021407A | 2000-01-21 | |||
| JPH04162357A | 1992-06-05 | |||
| JP2004014519A | 2004-01-15 | |||
| JP2004103392A | 2004-04-02 | |||
| JP2004179019A | 2004-06-24 | |||
| JPH11345507A | 1999-12-14 | |||
| JP2000123880A | 2000-04-28 |
Other References:
See also references of EP 2034542A4
Attorney, Agent or Firm:
OZAKI, Yuzo et al. (13-9 Nishinakajima 5-chome,Yodogawa-ku, Osaka-sh, Osaka 11, JP)
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