Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LITHIUM-ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2016/133144
Kind Code:
A1
Abstract:
Provided is a lithium-ion secondary battery with which it is possible to improve the battery capacity retention rate after repeated high-rate charging and discharging. This lithium-ion secondary battery comprises: a positive electrode in which a layer containing a positive-electrode active material is formed upon a positive-electrode collector, said positive-electrode active material being represented by formula (I); a negative electrode; and a non-aqueous electrolyte. The average primary particle size of the positive-electrode active material is 0.50 μm to 2 μm inclusive, and the average surface roughness Ra of a surface of the positive-electrode collector in contact with the layer containing the positive-electrode active material is 0.2 μm to 0.6 μm inclusive. In formula (I), M is at least one metal element selected from the group consisting of Co, Ni, Fe, Mn, Cu, Mg, Zn, Ti, Al, Si, B and Mo, and 0

Inventors:
Hoshihara Yuji (Nishishichijo Higashikubo-cho Shimogyo-ku, kyoto-sh, Kyoto 73, 〒6008873, JP)
Higashizaki Tetsuya (Nishishichijo Higashikubo-cho Shimogyo-ku, kyoto-sh, Kyoto 73, 〒6008873, JP)
Koumoto Sousuke (Nishishichijo Higashikubo-cho Shimogyo-ku, kyoto-sh, Kyoto 73, 〒6008873, JP)
Application Number:
JP2016/054632
Publication Date:
August 25, 2016
Filing Date:
February 18, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ELEXCEL CORPORATION LTD. (55 Nishishichijo Higashikubo-cho, Shimogyo-ku kyoto-sh, Kyoto 73, 〒6008873, JP)
International Classes:
H01M4/136; H01M4/58; H01M4/66
Domestic Patent References:
WO2013190624A12013-12-27
WO2013133040A12013-09-12
Foreign References:
JP2002110162A2002-04-12
JP2009152188A2009-07-09
JP2013025902A2013-02-04
JP2013058451A2013-03-28
Other References:
See also references of EP 3255708A4
Attorney, Agent or Firm:
Shosu Takeshi (5 Kisshoin Oogawara-cho, Minami-ku Kyoto-sh, Kyoto 91, 〒6018391, JP)
Download PDF: