Copper-graphene radiators just around the corner?

Graphene has a very high thermal conductivity, 10 times more than copper. Professor Jagannadkhan Kasichaynula from the University of North Carolina investigated the properties of graphene-based composite materials for use in heat distribution covers of microcircuits. In particular, the copper-graphene composite, obtained by electrochemical deposition of copper on graphene nano-plates, showed thermal conductivity 25% higher than that of copper (460 W / (m · K) at 300 K versus 380 for copper). Although graphene nanoplates ( Exfoliated graphite nano-platelets ) still cost about 15 times more expensive than copper, the total price of a heat-spreading lid made of such a composite can be even lower than usual, due to saving copper, which is also not cheap.

Chip manufacturers have long been eyeing graphene as a very promising material. In addition to high thermal conductivity, it has high mechanical rigidity and unusual electrical properties.