Title:
LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2017/169126
Kind Code:
A1
Abstract:
The purpose of the present invention is to improve the output characteristics of a lithium secondary battery that uses an electrolytic solution. This lithium ion secondary battery has a positive electrode, and a negative electrode. The positive electrode has a positive electrode mixture that has dielectric particles and a positive electrode active material, and the dielectric particles are represented by Ba1-xMxTiO3 (where, M = La and/or Sr, and x = 0 to 0.1). The weight ratio of the dielectric particles to the positive electrode active material is within the range of 0.1/99.9 to 10/90, and the coverage factor represented by a ratio B/A is within the range of 1-50%, wherein B represents the surface area of the dielectric particles covering the positive electrode active material, and A represents the surface area of the exposed part of the positive electrode active material + the surface area of the dielectric particles covering the positive electrode active material.
Inventors:
NISHIMURA ETSUKO (JP)
ARAKI CHIEKO (JP)
NOIE AKIHIKO (JP)
TSUBOUCHI SHIGETAKA (JP)
SUZUKI SHUICHI (JP)
ARAKI CHIEKO (JP)
NOIE AKIHIKO (JP)
TSUBOUCHI SHIGETAKA (JP)
SUZUKI SHUICHI (JP)
Application Number:
PCT/JP2017/004292
Publication Date:
October 05, 2017
Filing Date:
February 07, 2017
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H01M4/36; H01M4/13; H01M4/62
Foreign References:
| JP2011210694A | 2011-10-20 | |||
| JP2008147068A | 2008-06-26 | |||
| JP2009158239A | 2009-07-16 | |||
| JP2013222612A | 2013-10-28 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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