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Issue
Korean Journal of Chemical Engineering,
Vol.34, No.5, 1483-1489, 2017
Effect of electrolyte composition on the morphological structures of dendritic copper powders prepared by a spontaneous galvanic displacement reaction
Zhuo K, An CY, Kannan PK, Seo N, Park YS, Chung CH
Dendritic copper powders are highly desirable in many applications, including electromagnetic interference shielding and conductive pastes, because of low cost and high conductivity. We prepared dendritic copper powders using the galvanic displacement reaction between the Al and Cu-ions in aqueous solution. This method is very simple and spontaneous at room temperature. During the process, the morphology of the copper powders is strongly affected by several variables, such as the displacement reaction rate and the amount of hydrogen evolution due to the reduction of proton. The effect of the different composition of electrolytes to morphological changes of copper powders was investigated in this study. In addition, the effects of concentration of chlorine ion, pH, termination time, and additives were monitored, which resulted in different morphology. Considering different applications, such as sensors, catalysts, and conductive pastes, the controllability of the morphology of dendritic copper powders plays an important role in achieving high performance in desired applications.
Keywords: Dendritic Copper Powders; Galvanic Displacement Reaction; Morphology; Hydrogen Bubbles; Copper Complex; Reduction Potential
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[Cited By]
  1. Kim YS, Yoo TK, Chung CH, Korean Journal of Chemical Engineering, 37(10), 1810, 2020
  2. Jeong JS, Song HJ, Choi IS, Korean Journal of Chemical Engineering, 38(1), 170, 2021
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