Title:
リチウム二次電池の正極
Document Type and Number:
Japanese Patent JP5824461
Kind Code:
B2
Abstract:
An object of the present invention is to provide a lithium secondary battery cathode which can more improve characteristics of the battery. The cathode of the present invention includes an electroconductive cathode current collector, a plurality of plate-like particle formed of a cathode active material, and a binder containing microparticles formed of the cathode active material and being smaller than the plate-like particles. The plate-like particles are formed so as to have an aspect ratio of 4 to 50. The plate-like particles are arranged such that the particles cover the surface of the cathode current collector surface at a percent area of 85 to 98%. The binder is disposed so as to intervene between two adjacent plate-like particles.
Inventors:
Shigeki Okada
Tsutomu Nanataki
Nobuyuki Kobayashi
Jun Yoshikawa
Akira Urakawa
Tsutomu Nanataki
Nobuyuki Kobayashi
Jun Yoshikawa
Akira Urakawa
Application Number:
JP2012544170A
Publication Date:
November 25, 2015
Filing Date:
November 01, 2011
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
H01M4/131; H01M4/485
Domestic Patent References:
| JP2001085009A | 2001-03-30 | |||
| JP2002251996A | 2002-09-06 | |||
| JP2002270173A | 2002-09-20 | |||
| JP2004182564A | 2004-07-02 | |||
| JP2014220254A | 2014-11-20 |
Foreign References:
| WO2010074299A1 | 2010-07-01 | |||
| WO2010074314A1 | 2010-07-01 |
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation