Method for electrodepositing metal lanthanum in ionic liquid

An ionic liquid, metal lanthanum technology, applied in the field of electrodeposited metal lanthanum, can solve the problem of not being able to obtain a single metal lanthanum deposition layer, and achieve the effects of excellent electrical conductivity, wide electrochemical window, and low viscosity

Inactive Publication Date: 2012-05-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention is to solve the existing problem that the single metal lanthanum deposition layer cannot be obtained in the ioni...

Method used

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  • Method for electrodepositing metal lanthanum in ionic liquid
  • Method for electrodepositing metal lanthanum in ionic liquid
  • Method for electrodepositing metal lanthanum in ionic liquid

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specific Embodiment approach 1

[0016] Specific embodiment one: a kind of method for electrodepositing metal lanthanum in ionic liquid of the present embodiment is to carry out in the glove box of argon atmosphere according to the following steps:

[0017] 1. Add anhydrous lanthanum chloride to the ionic liquid at a molar ratio of 1:2 to 4 according to the molar ratio of anhydrous lanthanum chloride to the ionic liquid, and mix well to obtain an electroplating solution; the ionic liquid is 1-formazol Base-3-ethylimidazole bis(trifluoromethylsulfonyl)imide;

[0018] 2. Take the pretreated copper sheet as the cathode, and use platinum, graphite or titanium-based oxide as the anode. The distance between the cathode and the anode is 1cm to 5cm. The electroplating solution prepared in step 1 is used in a constant current mode. The current density is 10A / m 2 ~100A / m 2 , Electroplating for 1min to 30min at a temperature of 25°C to 50°C;

[0019] 3. After taking out the copper sheet, wash it with ethanol first, t...

specific Embodiment approach 2

[0021] Embodiment 2: This embodiment differs from Embodiment 1 in that the pretreatment process in step 2 is as follows: a. Alkaline degreasing: immerse the copper sheet in a conventional alkaline degreasing solution until the oil is completely removed; b, pickling: immerse the copper sheet processed in step a into hydrochloric acid with a mass concentration of 20% for 10 to 30 seconds; c, water washing: wash the copper sheet processed in step b with water, and then dry it. Complete the pretreatment of copper sheet. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the molar ratio of anhydrous lanthanum chloride to ionic liquid in step 1 is 1:2.3-3.5. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a method for electrodepositing metal lanthanum in an ionic liquid, relates to a method for electrodepositing metal lanthanum, and is used for solving the problem that a single metal lanthanum deposition layer can not be obtained in the ionic liquid 1-butyl-3-methylimidazolium trifluoro-methanesulfonate currently. The method comprises the following steps: adding anhydrous lanthanum chloride in the ionic liquid 1-methyl-3-ethyllimidazolium di(trifluoromethylsulfonyl)imine and evenly mixing, so as to obtain an electroplating liquid; and electroplating by using a constant current mode based on pretreated copper sheet as a cathode and platinum, graphite or titanium-based oxide as an anode, so as to obtain metal lanthanum deposited on the surface of a substrate. According to the invention, a La plated layer prepared by adopting an electrodeposition method is smooth and even, and the plating liquid components are simple and easy to control. In the invention, electrodeposited metal lanthanum can be applied to the field of functional material preparation.

Description

technical field [0001] The present invention relates to a method of electrodepositing lanthanum metal. Background technique [0002] Because metal lanthanum has some excellent properties, it is widely used in the fields of magnetic materials, thermoelectric materials, nickel-metal hydride battery electrode materials, and photocatalysts. However, the standard electrode potential of metal lanthanum is very negative, so it is difficult to conduct electrodeposition in aqueous solution. Electrodeposition of metal lanthanum in aqueous solution must select a suitable ligand to positively shift the precipitation potential of lanthanum, thereby inhibiting the precipitation of hydrogen, and the experimental conditions are difficult to control. Su Caina, An Maozhong, etc. published the article "Research on Ionic Liquid Electrodeposited La-Co Alloy" in the 28th issue (supplement) "Electroplating and Finishing" in 2009 (Su Caina, An Maozhong, Yang Peixia, Gu Hongwei. Ionic Liquid Electr...

Claims

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Application Information

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IPC IPC(8): C25D3/54
Inventor 杨培霞安茂忠苏彩娜任雪峰
Owner HARBIN INST OF TECH
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