| abstract |
The present invention is a method for coating nanoparticles with graphene, (a) providing a suspension comprising a suspension medium and nanoparticles carrying a positive surface charge, (b) adding graphene oxide particles to the suspension of step (a) to accumulate graphene oxide particles on the nanoparticles, and (c) converting the graphene oxide particles accumulated on the nanoparticles to graphene , Graphene-coated nanoparticles comprising one or more metals, semi-rapid, metallic and / or semi-metallic compounds, electrochemical cells and such graphene-coated nanoparticles in a supercapacitor And to super-capacitors and electrochemical cells containing such nanoparticles. |