Nickel oxide nanoparticles are widely used in production of alkaline batteries, magnetic materials, composites, capacitors, chemical sensors and catalysts.
According to the Iranian Nanotechnology Initiative, researchers at Sharif University of Technology, in collaboration with their colleagues at Iran's Material and Energy research Center (MERC), found a practical and low-cost synthesis of nickel oxide nanoparticles to be used in alkaline batteries.
"In this research, a solution containing nickel particles and another one containing soda were initially prepared. Then, the solution containing nickel ions was poured drop by drop, into the soda solution. After that, the resulted precipitate, green colored nickel hydroxide was separated from undesired species by filtration," Yaser Bahari, a member of the research team said.
To ensure complete removal of the unwanted components, the precipitate was washed with distilled water and ethanol. It was dried in oven and finally black nanopowder of nickel oxide was obtained via calcination process, Bahari added.
According to Bahari, this method enjoys high commercialization potential because of its low costs and mass production possibilities.