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:
May. 09, 2017
Filed:
Jan. 14, 2016
Chang Chun Petrochemical Co., Ltd., Taipei, TW;
Kuei-Sen Cheng, Taipei, TW;
Yao-Sheng Lai, Taipei, TW;
Hsi-Hsing Lo, Taipei, TW;
Huei-Fang Huang, Taipei, TW;
Chang Chun Petrochemical Co., Ltd., Taipei, TW;
Abstract
The present disclosure relates to a surface-treated copper foil which exhibits excellent affinity for an active material layer that is applied to the copper foil in the manufacture of a negative electrode (anode), for use in secondary lithium-ion batteries. The copper foil is plated with chromium and zinc and subsequently subjected to an organic treatment. The surface-treated copper has a surface tension of 34 to 58 dyne/cm and a surface roughness (Rz) of 0.8 to 2.5 μm, and comprises: (a) copper foil; (b) a zinc-chromium layer plated one or both sides of the copper foil, wherein the zinc content in the zinc-chromium layer is from 10 to 120 μg/dmand the chromium content in the zinc-chromium layer is from 10 to 35 μg/dm; and (c) an organic hydrophobic layer applied to the zinc-chromium layer.