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.:
Date of Patent:
Apr. 11, 2000
Filed:
Jul. 21, 1998
Xuekun Xing, Richmond Heights, OH (US);
Wan Jun Fang, Mentor, OH (US);
James R Winchester, III, Cleveland Heights, OH (US);
GA-TEK Inc., Eastlake, OH (US);
Abstract
A method of treating a copper current collector (copper mesh and/or copper foil) for use in Li-ion and/or Li-ion polymer batteries, comprising the steps of: positioning a copper current collector within an electrolytic solution adjacent an anode plate, the electrolytic solution comprised of about 2 to about 25 grams/liter of Cu.sup.+2, and about 30 to about 100 grams/liter of H.sub.2 SO.sub.4 ; energizing the system to have a predetermined current density; maintaining the current density of the system for about 0.5 to about 3.0 minutes; and removing the copper current collector from the electrolyte solution and rinsing the same.