Preparation of micro-nano-sized Cu-Ag core-shell particles by a quick-making method and their conductivity

  • Bin Cai
  • , Zhejuan Zhang*
  • , Zhuo Sun
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Micro-and nano-sized Cu and Ag core-shell particles were fabricated by a simple and quick-making method with copper micro-particles, gelatin and silver sulfate (Ag2SO4) as raw materials, and citric acid trisodium (SC) as reducing-and chelating-agent. The influence of SC and Ag2SO4 on the morphologies and oxidation resistance of Cu-Ag particles were investigated. The results showed that the dosage of SC directly affected the uniformity and morphology of the Ag coated Cu particles. The more the Ag2SO4 was used, the lower the conductive resistance was for the prepared particles. With dosages of 1.5 g and 8.0 g for SC and Ag2SO4respectively, the Cu-particles could be covered by Ag nanoparticles completely to form core-shell structured Cu-Ag particles, thereafter, the electrical resistance of sheets made of which can reach as low as 1.1Ω.

Original languageEnglish
Pages (from-to)903-908
Number of pages6
JournalCailiao Yanjiu Xuebao/Chinese Journal of Materials Research
Volume30
Issue number12
DOIs
StatePublished - 25 Dec 2016
Externally publishedYes

Keywords

  • Ag coated Cu particles
  • Chelating agent
  • Conductivity
  • Core-shell particles
  • Metallic materials

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