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Ultrahigh-strength electrolytic copper foil, an electrode and a secondary battery comprising the same, and a method of manufacturing the same

A technology of electrolytic copper foil and secondary battery, which is applied in the field of electrolytic copper foil, and can solve problems such as production efficiency degradation and inherent advantage damage

Inactive Publication Date: 2017-04-05
KCF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] That is, problems such as folding and / or wrinkling of the electrolytic copper foil, which often occur during the roll-to-roll (RTR) process, prevent continuous production of products, thus causing damage to the inherent advantages of the roll-to-roll (RTR) process and Deterioration of production efficiency of products

Method used

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  • Ultrahigh-strength electrolytic copper foil, an electrode and a secondary battery comprising the same, and a method of manufacturing the same
  • Ultrahigh-strength electrolytic copper foil, an electrode and a secondary battery comprising the same, and a method of manufacturing the same
  • Ultrahigh-strength electrolytic copper foil, an electrode and a secondary battery comprising the same, and a method of manufacturing the same

Examples

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Effect test

example 1

[0072] An electrical current is conducted between the spaced cathode plates and the rotating anode cylinder in the electrolyte in the electrolyte tank to form a copper film on the rotating anode cylinder. The electrolyte contains 85g / L copper ions and 98g / L sulfuric acid. The electrolyte solution included 5.6 ppm of [bis(3-sulfopropyl) disulfide] (SPS), 6.2 ppm of collagen A (average molecular weight: 3000 g / mol to 20000 g / mol) and 1.1 ppm of (H 2 N) 2 C=S. When forming the copper film, maintain the electrolyte at about 50°C, and 3 A flow rate of / h feeds the electrolyte into the electrolyte tank. The current density provided for the formation of copper film is 55A / dm 2 . The copper film was dipped in a 1 g / L to 10 g / L potassium dichromate solution at room temperature for 10 seconds, and then dried to form a protective layer on both surfaces of the copper film, thereby completing an electrolytic copper film having a thickness of 4 μm foil.

example 2

[0074] In addition to the (H 2 N(CH 2 ) 6 ) 2 C=S was added to the electrolyte in an amount of 1.1ppm to replace (H 2 N) 2 Electrolytic copper foil was produced in the same manner as in Example 1 except for C=S.

example 3

[0076] In addition to the (H 2 N) 2 Electrolytic copper foil was produced in the same manner as in Example 1 except that the amount of C=S was 6.4 ppm.

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Abstract

The invention provides an electrolytic copper foil which can prevent folding or creasing in a reel-to-reel (RTR) technology, an electrode comprising the electrolytic copper foil, a secondary battery comprising the electrolytic copper foil, and a method of manufacturing the electrolytic copper foil. The electrolytic copper foil comprises a copper film containing copper of 99wt% and above, and a protective layer arranged on the copper film, wherein the electrolytic copper foil has a tensile strength of 45kgf / mm<2>-65kgf / mm<2>.

Description

technical field [0001] The invention relates to an ultrahigh-strength electrolytic copper foil, an electrode including the electrolytic copper foil, a secondary battery including the electrolytic copper foil, and a method for manufacturing the electrolytic copper foil. Background technique [0002] Electrolytic copper foil is used in the production of various products such as anode current collectors for secondary batteries, and flexible printed circuit boards (FPCB). [0003] In general, the electrolytic copper foil is produced through a roll-to-roll (RTR) process, and is used to produce an anode current collector of a secondary battery, a flexible printed circuit board (FPCB), and the like through the roll-to-roll (RTR) process. [0004] The roll-to-roll (RTR) process is known to be suitable for mass production because it enables continuous production. However, in practice, the operation of roll-to-roll (RTR) process equipment is inevitably stopped due to the folding and / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04C25D1/04
CPCC25D1/04H01M4/04H01M4/0452Y02E60/10
Inventor 金昇玟李廷吉
Owner KCF TECH CO LTD