Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
NONAQUEOUS ELECTROLYTIC SECONDARY CELL
Document Type and Number:
WIPO Patent Application WO/2008/029719
Kind Code:
A1
Abstract:
A nonaqueous electrolytic secondary cell comprises at least a negative electrode (2) having a first columnar negative active material (15) formed discretely on the outer peripheral surface of a negative electrode current collector (14) in the direction of the winding and capable of reversibly occluding and releasing lithium ions and a second columnar negative electrode active material (16) formed discretely on the inner peripheral surface, a positive electrode having a positive electrode mix layer containing a positive electrode active material provided on both sides of a positive electrode current collector and capable of reversibly occluding and releasing lithium ions, and a separator interposed between the positive electrode and negative electrode (2) and opposed to them. The difference between the porosity within the first negative electrode active material (15) of the negative electrode (2) and that within the second negative electrode active material (16) is 1.1% or less when the negative electrode current collector (14) is wound.

More Like This:
WO/2004/022484CARBON FINE POWDER COATED WITH METAL OXIDE, METAL NITRIDE OR METAL CARBIDE, PROCESS FOR PRODUCING THE SAME, AND SUPERCAPACITOR AND SECONDARY BATTERY USING THE CARBON FINE POWDER
JP2010218764CURRENT COLLECTOR FOR BIPOLAR LITHIUM ION SECONDARY BATTERY
JP2011060558NONAQUEOUS ELECTROLYTE BATTERY
Inventors:
SHIRANE, Takayuki (())
白根 隆行 (())
INOUE, Kaoru (())
Application Number:
JP2007/066969
Publication Date:
March 13, 2008
Filing Date:
August 31, 2007
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 5718501, JP)
松下電器産業株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 5718501, JP)
SHIRANE, Takayuki (())
白根 隆行 (())
International Classes:
H01M4/13; H01M4/134; H01M4/1395; H01M10/0525; H01M10/36; H01M4/02; H01M4/02; H01M10/00; H01M10/36
Attorney, Agent or Firm:
IWAHASHI, Fumio et al. (1006, Oaza Kadom, Kadoma-shi Osaka 01, 5718501, JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: COATING METHOD AND COATING APPARATUS

Next Patent: POWER OUTPUT DEVICE AND HYBRID VEHICLE