Dispersion comprising carbon nanotubes and graphene platelets

US9587133B2 · kind B2 · utility

Assignee

• Future Carbon GmbH · DE

Inventors

• Daniel Rudhardt · Cologne, DE
• Thomas Buesgen · Leverkusen, DE
• Stefanie Eiden · Leverkusen, DE
• Diana Dimowa Landen · Leverkusen, DE
• Gesa Behnken · Neunburg vorm Wald, DE

Key dates

• Filing date: Aug 20, 2012
• Grant date: Mar 7, 2017
• Expiry date: Aug 19, 2033

Classification

• Technology area (CPC —): General

Abstract

A preferably aqueous dispersion comprises carbon nanotubes and graphene platelets, with the ratio by mass of carbon nanotubes to graphene platelets being situated within a range from ≧5:95 to ≦75:25. In a process for preparing a dispersion of this kind, carbon nanotubes and graphene platelets are combined so that the ratio by mass of carbon nanotubes to graphene platelets in the dispersion is in a range from ≧5:95 to ≦75:25. The dispersion can be used as a printing ink for producing electrically conductive films. The invention further provides an electrically conductive film comprising carbon nanotubes and graphene platelets, with the ratio by mass of carbon nanotubes to graphene platelets being situated within a range from ≧5:95 to ≦75:25.