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Electrolysis method for producing nickel foil

An electrolysis method and nickel foil technology, applied in the electrolysis process, electroforming and other directions, can solve the problems of high cost, poor adhesion performance of nickel foil, long production process, etc., and achieve the effects of high yield, avoiding pollution and less solute

Active Publication Date: 2013-04-10
山东雍申电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of thin nickel foil (less than 50um nickel foil) needs repeated rolling, the production process is long, the cost is high, the width and thickness of the product are greatly limited, and the bonding performance of nickel foil is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The lead-silver plate (or titanium) is used as the anode, and the rotatable titanium roller is used as the cathode. The rotatable titanium roller used as the anode is made of pure titanium plate coil welding and strong spinning, and the surface roughness is Ra2 , The cathode in the purified electrolytic cell adopts a wave-type cathode. The wavy cathode can increase the contact area. The electrolyte must be purified by a filter with a filtration accuracy of 0.1um. Remove tiny particles in the system, then heat to 57°C, the pole distance between the two electrodes supplied from the bottom of the electrolytic cell is 10mm, and the circulation volume of the electrolyte is 6m 3 / h, the cathode current density is 28A / dm 2 , the cathode roll speed is 1.1m / min. Nickel ions are deposited on the slowly rotating cathode titanium roller and peeled off from the titanium roller by a stripping device, then washed with deionized water, dried and coiled to form a continuous roll of ni...

Embodiment 2

[0018] Its operation method, equipment and system process are basically the same as the above-mentioned implementation cases, the difference is that the rotation speed of the cathode roller is slightly changed. The electrolyte composition is 300g / L nickel sulfate, 40g / L boric acid, maintain the pH value of the electrolyte at 3.7, and control the cathode current density at 0.1A / dm during electrolytic purification 2 , the electrolyte temperature is 60°C, the distance between the two poles is 15mm, and the cathode current density is 21A / dm 2 , the circulation rate is 6m3 / h, the cathode titanium roll speed is 0.6m / min, the nickel foil width is 500mm, the thickness is 50um (thickness deviation 2 , the adhesive force is 2kgf / cm, the appearance is smooth and clean.

Embodiment 3

[0020] Its operation method, equipment and system process are basically the same as the above-mentioned implementation cases, the difference is that the rotation speed of the cathode roller is slightly changed. The electrolyte composition is 200g / L nickel sulfate, 42g / L boric acid, maintain the pH value of the electrolyte solution at 2, and control the cathode current density at 0.1A / dm during electrolytic purification 2 , the electrolyte temperature is 55°C, the distance between the two poles is 9mm, and the cathode current density is 21A / dm 2 , the circulation volume is 6m 3 / h, the cathode titanium roll speed is 0.8m / min, the nickel foil width is 500mm, the thickness is 40um (thickness deviation 2 , the adhesive force is 2kgf / cm, the appearance is smooth and clean.

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Abstract

The invention relates to an electrolysis method for producing a nickel foil, being applicable to the field of electrolytic production of a nickel foil. The electrolysis method for producing the nickel foil comprises the following steps of: by taking a lead-silver board or a titanium board as an anode, and a titanium roller or a stainless steel bar which is capable of rotating and controlling a rotating speed as a cathode, controlling a distance between the cathode and the anode to 9-15mm; circularly filling an electrolytic solution which consists of 200-300g / L of nickle sulfate and 40-45g / L of boric acid and is 1.7-3.5 in pH value into an electrolytic bath; turning on the power supply of the electrolytic bath and controlling a voltage, so that cathode current density is 21-35A / dm<2>; controlling the temperature of the electrolytic solution to 50-60 DEG C; rotating the titanium roller or the stainless steel bar at a constant speed, so as to peel off a nickel foil which is electrolytically deposited on the titanium roller or the stainless steel bar through the continuous rotation of the titanium roller or the stainless steel bar; and washing and drying the obtained nickel foil, and coiling the nickel foil into continuous and coiled nickel foil, to obtain the product. The nickel foil produced by the electrolytic process of the system, through the electrolytic deposition, is wide and thin, is moulded once, is comparatively high in yield and is low in processing cost.

Description

technical field [0001] The invention relates to an electrolytic method for producing nickel foil, which is applied to the field of electrolytic production of nickel foil. Background technique [0002] At present, there are two main methods of producing nickel foil, calendering and electrolysis. The process of producing nickel foil by calendering is from thick to thin. The production of thin nickel foil (nickel foil less than 50um) requires repeated rolling. The production process is long and the cost is high. The width and thickness of the product are greatly limited, and the bonding performance of the nickel foil is poor. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an electrolytic production method of semi-bright nickel foil, which can overcome the complex production process of the prior art, and produce semi-bright nickel foil with large width, thin thickness and good adhesive performance, and The product...

Claims

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Application Information

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IPC IPC(8): C25D1/04C25D7/06
Inventor 姜志勇
Owner 山东雍申电子科技有限公司
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