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Device for preparing metal particles through continuous electrochemical deposition

A metal particle, electrodeposition technology, applied in the direction of electrolysis process, electrolysis components, etc.

Pending Publication Date: 2020-01-24
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device can achieve rapid powder output, but its essence is the adjustment of the electrolysis process, and does not involve the control of the electrolysis process

Method used

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  • Device for preparing metal particles through continuous electrochemical deposition
  • Device for preparing metal particles through continuous electrochemical deposition
  • Device for preparing metal particles through continuous electrochemical deposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] A device for preparing metal particles by continuous electrodeposition by controlling the cathode speed, the contact force between the prepared metal particles and the cathode is less than 25nN, or the shear strength is less than 1MPa, such as figure 1 As shown, the device includes:

[0084] (a) power supply (2), electrodeposition tank (5), cleaning tank (7), collection tank (8), wherein electrodeposition tank (5), cleaning tank (7), and collection tank (8) are connected in sequence, The power supply (2) adjusts the parameters of electrochemical deposition, and conducts electrodeposition in constant current or constant voltage mode. The current density range in the process of constant current mode is 0-10mA / cm 2 , the voltage range during the constant voltage mode is 0~10V;

[0085] (b) an anode (4) and a cathode (16) arranged oppositely in the electrodeposition tank (5); the anode (4) is connected to the power supply (2) through the anode lead (1) and the cathode (16)...

Embodiment 2

[0093] Prepare silver particles by electrodeposition in constant voltage mode with the device of Example 1

[0094] (1) Preparation of electrolyte, preparation of 5g / L AgNO 3 , 25g / L Na 2 S 2 o 3 ·5H 2 O, 5g / LK 2 SO 3 and 5g / L H 3 BO 3 mixed solution;

[0095] (2) Select a cathode that can move continuously, the cathode adopts a stainless steel strip, and the surface of the cathode stainless steel strip is polished;

[0096] (3) Adjust the parameters of electrochemical deposition, and carry out electrodeposition in constant voltage mode. The electrochemical workstation used is CHENHUA760, and the voltage range in the process of constant voltage mode is 0.4V;

[0097] (4) The cathode stainless steel strip passes through the electrodeposition tank, cleaning tank, and collection tank continuously and in sequence, and then directly returns to the electrodeposition tank, and the cathode forms a continuous and circular movement;

[0098] (5) In the electrodeposition tank, ...

Embodiment 3

[0105] Silver particles were prepared by electrodeposition in constant current mode with the device of Example 1

[0106] (1) Preparation of electrolyte, preparation of 5g / L AgNO 3 , 25g / L Na 2 S 2 o 3 ·5H 2 O, 5g / L K 2 SO 3 and 5g / L H 3 BO 3 mixed solution;

[0107] (2) Select a cathode that can move continuously, the cathode adopts a stainless steel strip, and the surface of the cathode stainless steel strip is polished;

[0108] (3) Adjust the parameters of electrochemical deposition to conduct constant current mode electrodeposition, and the current density range during the constant current mode is 1mA / cm 2 ;

[0109] (4) The cathode stainless steel belt passes through the electrodeposition tank, cleaning tank and collection tank continuously and sequentially;

[0110] (5) In the electrodeposition tank, the cathode stainless steel belt moves continuously in the electrolyte, the part of the cathode stainless steel belt immersed in the electrolyte is 10cm in lengt...

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Abstract

The invention discloses a device for preparing metal particles through continuous electrochemical deposition. The device mainly comprises an electrodeposition tank (an anode, electrolyte and a cathode), a cleaning tank, a collecting tank (a collecting part) and the like. The device has the advantages that the whole electrodeposition collecting process is completed in one device, the cathode is designed to be in a reciprocating rotating strip shape and is organically combined with the collecting device, and the two processes cannot interfere with each other due to the modular design; a mechanical stripping method is adopted for collecting the metal particles, so that a large amount of surface active reagents of a traditional chemical synthesis method are avoided; the electrolyte can be repeatedly used in the whole synthesis process, a large amount of organic additives are not needed, and the environmental benefit is excellent; and the device is good in universality and suitable for various metals.

Description

technical field [0001] The invention relates to the field of synthesis of metal particles, in particular, the invention relates to metal particles with low contact force and a device for preparing corresponding metal particles by adjusting the particle size through continuous electrochemical deposition. Background technique [0002] Metal particle materials are an important part of metal materials. In recent years, with the discovery of various novel properties of metal particles, the field of metal particles has achieved vigorous development and has become a key basic material for the preparation of various new functional materials. [0003] The development of preparation methods for metal particles is the basis for the development of metal science. Traditionally, there are two main ways to prepare metal particles: one is chemical method, including liquid phase reduction method, high temperature pyrolysis method and so on. The liquid-phase reduction method includes hydroth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C5/02C25C7/08
CPCC25C5/02C25C7/08
Inventor 伍晖黄雅杨程
Owner TSINGHUA UNIV
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