Choline chloride ion liquid type electrolyte for nickel-cobalt alloy plating layers and manufacturing method

Abstract

The invention belongs to the field of nickel-cobalt alloy plating and discloses a choline chloride ion liquid type electrolyte for nickel-cobalt alloy plating layers and a manufacturing method. The electrolyte is prepared from choline chloride, urea, an organic solvent, 0.5-1mol / L of nickel chloride, 0.05-0.1mol / L of cobalt chloride and 0.01-0.1g / L of a surfactant, wherein a mole ratio of cholinechloride to urea to the organic solvent is 1:(0-2):(2-4). The preparation method includes: mixing choline chloride, urea and the organic solvent, and adding nickel chloride, cobalt chloride and the surfactant. The electrolyte is no-emission no-pollution environment-friendly electrolyte, the preparation method is simple in raw material requirement and controllable in process, and the prepared choline chloride ion liquid type electrolyte is environmentally friendly and degradable.

Description

technical field [0001] The invention relates to a choline chloride-based ionic liquid-type electrolyte for nickel-cobalt alloy coating and a preparation method thereof, belonging to the technical field of nickel-cobalt alloy electroplating. Background technique [0002] Ionic liquid is currently a new solvent system with excellent physical properties. In the research of ionic liquid electrodeposition, it is mostly used for elemental metals that cannot be reduced by water solvents. It has non-volatility, almost no vapor pressure, wide liquid range, and wide electrochemical window. Most inorganic and organic materials have the advantages of good solubility, large stable temperature range, and high conductivity, especially in organic synthesis, preparation of inorganic porous materials, and electrochemical fields. possibility of industrialization. The use of ionic liquid co-melting salts makes the development of green solvents possible. At present, there are more and more deve...

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Problems solved by technology

[0004] At present, most of the researches on ionic liquid electrodeposition are light metals and rare metal alloys, and less research is done on the preparation of traditional alloys. The traditional nickel-cobalt plating solution is sulfate, and there are problems such as solution instability and pollution, which have not been resolved.