Formation of nickel nanoparticles by electroless deposition using NiO and Ni(OH)2 suspensions

Shunsuke Yagi, Takaaki Koyanagi, Hidetaka Nakanishi, Tetsu Ichitsubo, Eiichiro Matsubara

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Nickel particles ∼300 nm in diameter were fabricated by electroless deposition using hydrazine as a reducing agent in nickel hydroxide/ethylene glycol suspension at 353 K without any dispersing agent. The formation mechanism of nickel nanoparticles is discussed from the viewpoint of thermodynamics with in situ monitoring of nickel deposition and mixed potential. Specifically, in situ monitoring of mixed potential in combination with thermodynamic calculation is useful in discriminating whether or not nickel will be deposited in a reaction. The mixed potential drastically changed at the end point of the nickel deposition reaction, indicating that the cathodic reaction, which determined the mixed potential, switched from the nickel deposition reaction to hydrogen generation reaction.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume155
Issue number9
DOIs
Publication statusPublished - 2008 Aug 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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