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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.

Patent No.:

US 10658655 B1

PDFFull Text
Date of Patent:
May. 19, 2020

Filed:

Aug. 27, 2018

Copper foil having improved workability and charge/discharge characteristics, electrode including the same, secondary battery including the same and method for manufacturing the same

Applicant:

Kcf Technologies Co., Ltd., Anyang-si, Gyeonggi-do, KR;

Inventors:

Young Wook Chae, Anyang-si, KR;

Young Hyun Kim, Anyang-si, KR;

Shan Hua Jin, Anyang-si, KR;

Assignee:

KCF TECHNOLOGIES CO., LTD., Anyang-si, Gyeonggi-Do, KR;

Attorney:

K&L Gates LLP

Primary Examiner:

Raymond Alejandro

Int. Cl.
CPC ...
H01M 4/66 (2006.01); H01M 4/134 (2010.01); H01M 4/1395 (2010.01); H01M 4/04 (2006.01); C25D 3/38 (2006.01); C25D 5/56 (2006.01); C25D 1/04 (2006.01); H01M 4/02 (2006.01); H01M 10/0525 (2010.01); H01M 4/133 (2010.01); H01M 4/36 (2006.01);
U.S. Cl.
CPC ...
H01M 4/134 (2013.01); C25D 1/04 (2013.01); C25D 3/38 (2013.01); C25D 5/56 (2013.01); H01M 4/0402 (2013.01); H01M 4/0404 (2013.01); H01M 4/1395 (2013.01); H01M 4/661 (2013.01); H01M 4/667 (2013.01); H01M 4/668 (2013.01); H01M 4/133 (2013.01); H01M 4/364 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01);
Abstract

Disclosed is a copper foil including a copper layer having a matte surface and a shiny surface, wherein the copper foil has a first surface of a direction of the matte surface of the copper layer and a second surface of a direction of the shiny surface of the copper layer, wherein a dynamic friction coefficient of the first surface is designated by μk1 and a dynamic friction coefficient of the second surface is designated by μk2. A ratio of three-dimensional surface area to two-dimensional surface area of the first surface is designated by Fs1, a ratio of three-dimensional surface area to two-dimensional surface area of the second surface is designated by Fs2.

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