Pure copper nanoparticles prepared by coating-assisted vapor phase synthesis without agglomeration

Yong Su Jo, Hye Min Park, Gwang Hwa Jin, Bhabani Sankar Swain, Seok Hong Min, Young Keun Kim, Seung Min Yang

Research output: Contribution to journalArticlepeer-review


Modern electronic devices, such as smartphones and electric vehicles, require multilayer ceramic capacitors (MLCCs), which comprise highly pure Cu terminations and Ni electrodes. Vapor-phase synthesis (VPS) is a promising method for synthesizing nanoparticles (NPs) with high purity and crystallinity. However, the agglomeration of the NPs occurs during their synthesis, which degrades the performance of the MLCC electrodes owing to several factors, including electrical shorts and low packing density. This paper proposes a coating-assisted VPS to inhibit agglomeration using potassium chloride (KCl) as the coating agent. The agglomeration ratio of the Cu NPs synthesized by in-flight coating with KCl at 950 °C significantly decreased from 48.20% to 3.80%, compared to without KCl coating. Furthermore, X-ray fluorescence and X-ray diffraction analyses confirmed that the KCl coating agent and residual copper chloride were removed by washing with ammonium hydroxide.

Original languageEnglish
Pages (from-to)27820-27825
Number of pages6
JournalRSC Advances
Issue number43
Publication statusPublished - 2022 Sept 29

Bibliographical note

Funding Information:
This study was supported by the Korea Evaluation Institute of Industrial Technology (KEIT, grant no. 20011040), the Korea Institute of Industrial Technology (KITECH, grant no. UR-22-0003) and the Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea.

Publisher Copyright:
© 2022 The Royal Society of Chemistry.

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


Dive into the research topics of 'Pure copper nanoparticles prepared by coating-assisted vapor phase synthesis without agglomeration'. Together they form a unique fingerprint.

Cite this