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Electrolyte for preparing cobalt-nickel binary alloy powder

A binary alloy and electrolyte technology, applied in the electrolysis process, electrolysis components, electrodes, etc., can solve the problems of large particle size of deposited products, low deposition current efficiency, and electrode inactivation, etc., to prevent particle agglomeration and improve morphology. , the effect of preventing oxidation

Active Publication Date: 2017-08-18
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (2) Usually, the cobalt-nickel binary alloy powder prepared by electrodeposition has a loose structure on the electrode, and the electrode will lose its activity quickly, so it is difficult to carry out continuous processing.
[0008] (4) At high current density, although the deposition rate is high, there is the problem of low deposition current efficiency, and the problem of large particle size of the deposited product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Electrolyte preparation: firstly mix water, trifluoromethanesulfonate and citric acid in the tank-type stirred electrolyte preparation equipment; then add the main salt cobalt sulfate and nickel sulfate to the solution to form a solution; finally Alkyl glycoside surfactants are added.

[0033] The prepared electrolyte composition: Co 2+ 、Ni 2+ Concentrations are 0.01mol L -1 and 0.40mol·L -1 , the concentrations of lithium trifluoromethanesulfonate and citric acid were 0.10mol L -1 and 0.20mol·L -1 , the surfactant is octyl glucoside, its glucose polymerization degree is 1.6, and the addition amount is 0.4% of the mass percentage of the electrolyte solution.

[0034] The steps of making cobalt-nickel binary alloy powder through ultrasonic-electrodeposition coupling in the above electrolyte are as follows:

[0035] (1) Pretreatment of the base electrode: a 100mm×10mm×0.2mm copper sheet was polished with metallographic sandpaper to remove the surface oxide layer, an...

Embodiment 2

[0041] Electrolyte preparation: first, mix water, trifluoromethanesulfonate and citric acid in the tubular mixed electrolyte preparation equipment; then add the main salt cobalt sulfate and nickel sulfate to the solution to form a solution; finally Alkyl glycoside surfactants are added.

[0042] The prepared electrolyte composition: Co 2+ 、Ni 2+ Concentrations are 0.02mol L -1 and 0.20mol·L -1 , the concentrations of sodium trifluoromethanesulfonate and citric acid were 0.20mol L -1 and 0.40mol·L -1 , the surfactant is decanyl polyglucoside, the degree of glucose polymerization is 1.8, and the addition amount is 1.0% of the mass percentage of the electrolyte.

[0043]The steps of making cobalt-nickel binary alloy powder through ultrasonic-electrodeposition coupling in the above electrolyte are as follows:

[0044] (1) Pretreatment of the base electrode: a 100mm×10mm×0.2mm copper sheet was polished with metallographic sandpaper to remove the surface oxide layer, and then ...

Embodiment 3

[0048] Electrolyte preparation: first, mix water, trifluoromethanesulfonate and citric acid in the electrolyte preparation equipment in the static mixing equipment; then add the main salt cobalt sulfate and nickel sulfate to the solution to form a solution; The alkyl glycoside surfactant is added last.

[0049] The prepared electrolyte composition: Co 2+ 、Ni 2+ Concentrations are 0.40mol L -1 and 0.40mol·L -1 , the concentrations of potassium trifluoromethanesulfonate and citric acid were 0.30mol L -1 and 0.40mol·L -1 , the surfactant is octadecyl glucoside, its glucose polymerization degree is 2.0, and the addition amount is 0.6% of the mass percentage of the electrolyte solution.

[0050] The steps of making cobalt-nickel binary alloy powder through ultrasonic-electrodeposition coupling in the above electrolyte are as follows:

[0051] (1) Pretreatment of the base electrode: a 100mm×10mm×0.2mm copper sheet was polished with metallographic sandpaper to remove the surfac...

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Abstract

The invention discloses an electrolyte for preparing cobalt-nickel binary alloy powder, in particular to an electrolyte used in the ultrasonic intensified Co2+ and Ni2+ cathode electrochemistry codeposition process. According to the electrolyte, cobaltous sulfate and nickel sulfate serve as precursor for preparing a cobalt-nickel binary alloy, CPOCMA and citric acid serve as buffering agents, alkyl glycoside serves as a dispersing agent for cobalt-nickel alloy powder, the alkyl glycoside and the CPOCMA serve as surface protecting agents for the cobalt-nickel alloy powder, and water serves as a solvent. Firstly, in electrolyte preparing equipment, the water, the CPOCMA and the citric acid are mixed; then the main salt cobaltous sulfate and nickel sulfate are added to be mixed into a solution; and finally, an alkyl glycoside surface active agent is added. By the adoption of the electrolyte, the cobalt-nickel binary alloy powder with the controllable composition, granularity and appearance can be prepared through electrolytic deposition under the ultrasonic action.

Description

technical field [0001] The invention relates to an electrolytic solution for preparing cobalt-nickel binary alloy powder, in particular, ultrasonically strengthened Co 2+ and Ni 2+ The invention relates to an electrolyte solution used in a cathodic reduction co-deposition process, belonging to the technical field of preparation of functional metal alloy materials. Background technique [0002] Cobalt-nickel alloy has excellent magnetic, electrical and mechanical properties. It is an important functional magnetic material with high strength and low thermal expansion coefficient. It is widely used as computer storage devices and electromagnetic shielding of electronic equipment and electronic components and instruments. In industrial production, it has become an important part of new materials and high technology. [0003] The existing technologies for preparing cobalt-nickel alloy powder mainly include chemical method, mechanical crushing method, electrodeposition method an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C5/02C25C7/02C25C7/08
CPCC25C5/02C25C7/02C25C7/08
Inventor 许文林王大为李宝同张淮浩
Owner YANGZHOU UNIV
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