Nano metal paste, and preparation and application thereof
AssigneeGuangdong University of Technology
InventorsYu Zhang, Kai Yang, Guannan Yang, Chengqiang Cui
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Abstract
A method for preparing a nano metal paste, including the following steps. (S1) An organic metallic salt and an organic reducing agent are added into water or an organic solvent to obtain a first mixture. (S2) The first mixture is reacted under heating to obtain a second mixture containing metal nanoparticles. (S3) The second mixture is concentrated to obtain a nano metal paste containing 20-95% by weight of the metal nanoparticles. A conductive paste and A conductive ink prepared by using the nano metal paste as filler are also provided.
Claims7
A method for preparing a nano metal paste, comprising:
- (S1) adding an organic metallic salt and an organic reducing agent to a solvent to obtain a first mixture, wherein the solvent is water, an organic solvent or a combination thereof;
- (S2) reacting the first mixture under heating to obtain a second mixture containing metal nanoparticles;
- and
- (S3) concentrating the second mixture to obtain the nano metal paste without drying, grinding, and separating steps, wherein a weight percentage of the metal nanoparticles in the nano metal paste is 20-95%;
- and
- wherein the organic reducing agent is selected from the group consisting of pyrocatechin, aniline, and a combination thereof;
- in the step (S2), the metal nanoparticles are selected from the group consisting of silver nanoparticles, gold nanoparticles, nickel nanoparticles, palladium nanoparticles, tungsten nanoparticles, cobalt nanoparticles and platinum nanoparticles;
- and
- when the metal nanoparticles are silver nanoparticles, the organic metallic salt is selected from the group consisting of silver formate, silver stearate, and a combination thereof.
Dependencies are inferred from the claim text.