화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.34, No.5, 1483-1489, May, 2017
DOI10.1007/s11814-017-0023-3  Export Citation
Effect of electrolyte composition on the morphological structures of dendritic copper powders prepared by a spontaneous galvanic displacement reaction
Kai Zhuo1, Chang Yong An1, Padmanathan Karthick Kannan1, Nary Seo1, Yu-Seon Park1, and Chan-Hwa Chung1, 2, †
  • 1School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea
  • 2Farad Materials, Co., Ltd., Suwon 16419, Korea
E-mail:
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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