Electrical resistivity and conductivity

Engineering

Neuroscience

Biology

Epoxy

Conductive polymer

Materials science

Graphene

Percolation (cognitive psychology)

Polymer

Nanotechnology

Filler (materials)

Percolation threshold

Composite material

Electrical engineering

Electrical conductor

2D Materials

Electrically conductive composites comprising polymers and graphene are extremely versatile and have a wide range of potential applications. The conductivity of these composites depends on the choice of polymer matrix, the type of graphene filler, the processing methodology, and any post-production treatments. In this review, we discuss the progress in graphene–polymer composites for electrical applications. Graphene filler types are reviewed, the progress in modelling these composites is outlined, the current optimal composites are presented, and the example of strain sensors is used to demonstrate their application.

Electrical percolation in graphene–polymer composites