Title:
LITHIUM ION BATTERY AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2013171643
Kind Code:
A
Abstract:
To provide a lithium ion battery high in battery capacity and reliability without deteriorating storage stability of slurry, by suppressing segregation of a binder in a coating/drying process by lowering the polymerization degree of the binder, and a method for manufacturing the lithium ion battery.
The present invention provides a lithium ion battery including a collector from which generated electricity is taken out outside and an electrode film bonded on the surface of the collector by means of a binder. A ratio between binder concentration on the collector side of the electrode film and binder concentration on the opposite side from the collector is in the range of 0.5-2.
Inventors:
SATO KEIJI
KIKUCHI HIROSHI
ISHIHARA SHOSAKU
KUBOTA CHIEMI
KIKUCHI HIROSHI
ISHIHARA SHOSAKU
KUBOTA CHIEMI
Application Number:
JP2012033524A
Publication Date:
September 02, 2013
Filing Date:
February 20, 2012
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H01M4/13; H01M4/139; H01M4/62; H01M10/0525
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki