The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 05, 2016

Filed:

Feb. 28, 2012
Applicants:

Hiroyuki Mitsuhashi, Kyoto, JP;

Tsugihiro Doi, Kyoto, JP;

Inventors:

Hiroyuki Mitsuhashi, Kyoto, JP;

Tsugihiro Doi, Kyoto, JP;

Assignee:

HITACHI MAXELL, LTD., Ibaraki-Shi, Osaka, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/02 (2006.01); H01M 10/0525 (2010.01); H01M 4/04 (2006.01); H01M 4/133 (2010.01); H01M 4/1393 (2010.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); H01M 4/0404 (2013.01); H01M 4/133 (2013.01); H01M 4/1393 (2013.01); H01M 4/587 (2013.01); H01M 4/622 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); Y02E 60/122 (2013.01); Y10T 29/49108 (2015.01);
Abstract

The electrode of the present invention includes a current collector and an active material-containing layer formed on one side or both sides of the current collector. The active material-containing layer has a thickness of 20 to 200 μm per one side of the current collector, and diethyl carbonate permeates the active material-containing layer at a rate of 0.1 g/(cm·min) or higher. Further, the method for producing an electrode of the present invention includes the steps of: forming an electrode precursor by forming an active material-containing layer on one side or both sides of a current collector; and compressing the electrode precursor. In the electrode precursor forming step, the active material-containing layer is formed such that the active material-containing layer has a higher porosity in a portion close to the current collector then in other portions.


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