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Electrode for electrolysis, manufacturing method of electrode and electrolysis device

An electrolysis device and manufacturing method technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of difficult cathode discharge, low current efficiency, etc., achieve the effects of reducing cell voltage, improving current efficiency, and solving difficult deposition

Inactive Publication Date: 2021-06-11
深圳市祺鑫环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the electrolysis process, due to the strong electric polarization of iron, cobalt, nickel and other metal ions, it will make the current efficiency lower during the cathode discharge process.
Especially when the electrolyte is acidic, the cathode discharge is more difficult, and a larger impact current is required for deposition, and the current efficiency is lower

Method used

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  • Electrode for electrolysis, manufacturing method of electrode and electrolysis device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1: Electrolyte is NiSO 4 ·7H 2 O solution, its concentration is 20g / L, and its pH value is 1 with sulfuric acid adjustment. Perform electrolysis with a current of 2A, the area of ​​the cathode base is 10cm×10cm, and electrolyze for 1h.

[0062] Using a 410 stainless steel plate as the cathode, and attaching an N35 NdFeB magnet with a diameter of 30 mm x a thickness of 5 mm on the back of the cathode plate for magnetization, the hydrogen evolution at the cathode is significantly reduced, and the current efficiency of the cathode metal nickel electrodeposition is increased to 45%.

[0063] From the comparison of comparative example 1 and embodiment 1, it can be seen that under the same electrolytic solution and the same electrolysis conditions, embodiment 1 of the present invention is provided with a neodymium-iron-boron magnet on the back side of the cathode, and the neodymium-iron-boron magnet can be placed on the cathode. After magnetization, the current e...

Embodiment 2

[0069] Embodiment 2: Electrolyte is NiCl 2 ·6H 2 O solution, its concentration is 25g / L, and the pH value is 3 with hydrochloric acid adjustment.

[0070] Conduct electrolysis with a current of 2A, use an iron plate as the cathode, and the area of ​​the cathode plate is 10cm×10cm. On the back of the cathode iron plate, N35 NdFeB magnets with a diameter of 30mm×thickness 5mm are attracted to magnetize the cathode iron plate, and the NdFeB magnet is placed on the back of the cathode iron plate. The surface of the boron magnet is coated with epoxy resin to prevent the electrolyte from corroding the pole plate, and the current efficiency is 81% after electrolysis for 1 hour.

[0071] From the comparison of Comparative Example 2 and Example 2, it can be seen that when the electrolyte is the same, the electrolysis conditions are the same, and epoxy resin is coated to prevent the electrolyte from corroding the pole plate, Example 2 of the present invention is due to the An NdFeB ma...

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Abstract

The invention discloses an electrode for electrolysis, a manufacturing method of the electrode and an electrolysis device. The electrode for electrolysis is applied to the electrolysis device and used for electrolyzing an electrolyte containing metal ions, and a magnetic conductive material serves as the material of the electrode for electrolysis. According to the technical scheme, the current efficiency in the electrode discharging process can be improved.

Description

technical field [0001] The invention relates to the technical field of electrodes for electrolysis, in particular to an electrode for electrolysis, a manufacturing method thereof, and an electrolysis device. Background technique [0002] At present, for solutions containing metal ions such as iron, nickel, and cobalt, electrolysis is usually used to recover the metals therein. However, in the electrolysis process, due to the strong electric polarization of iron, cobalt, nickel and other metal ions, it will make the current efficiency lower in the cathode discharge process. Especially when the electrolyte is acidic, the cathode discharge is more difficult, and a larger impulse current is required for deposition, and the current efficiency is lower. Contents of the invention [0003] The main purpose of the present invention is to provide an electrode for electrolysis, a manufacturing method thereof, and an electrolysis device, aiming at improving the current efficiency dur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C7/02H01F41/00
CPCC25C7/02H01F41/00
Inventor 汪前程曹玉萍黄文涛梁民
Owner 深圳市祺鑫环保科技有限公司
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