Silver particles and manufacturing method therefor
AssigneeDae Joo Electronic Materials Co., Ltd.
InventorsSangwoo Kim, Chiho Yoon, Youngho Lee, Jong Chan Lim, Moohyun Lim, Wonjun Jo
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Abstract
The present invention relates to silver particles capable of having a uniform particle distribution, preventing agglomeration of a powder, and significantly improving dispersibility, the silver particles each having pores therein, and to a manufacturing method therefor and, more specifically, to a manufacturing method for silver particles, the method comprising a silver-complex forming step, a silver slurry preparing step, and a silver particle obtaining step, and to silver particles manufactured therefrom.
Claims3
A method of preparing silver particles having internal pores formed therein, comprising:
- forming a silver complex by adding an alkaline solution or a complexing agent to an aqueous solution containing a silver (Ag) precursor and stirring the solution;
- preparing silver slurry by adding a reducing agent, at 0.3 to 1.3 equivalents/sec relative to the silver, to the solution containing the silver complex, and heating and mixing the solution in a temperature range of 50 to 90° C. to precipitate silver particles;
- and
- obtaining the silver particles by filtering and drying the silver slurry,
- wherein the reducing agent is any one or more selected from the group consisting of formaldehyde, acetaldehyde, glyoxal, benzaldehyde and glucose, and
- in the preparing of the silver slurry, ultrasonic waves are not applied.
Dependencies are inferred from the claim text.