Abstract
Carbon, the most important element in the periodic table, has various structures, such as carbon black, graphite, graphene, fullerenes, carbon nanotubes, etc. These possess an excellent physical and chemical properties. As a result, they can be used in numerous applications directly or using as a filler in the polymer composite. In this chapter, the application of different carbon materials as specialized fillers in the polymer composites has been discussed. This chapter includes the discussion on various types of carbon fillers, their basic features, their composites with polymers, percolation phenomena for electrically conductive composites and finally electrical and electronic applications of polymer/carbon composites. Applications of polymer/carbon composites in microelectronics, transparent conductive coating and flexible conductors, displays, organic light-emitting diode (OLED), electroluminescent device, photovoltaic device, sensor, actuator, electrode, battery, capacitor, supercapacitor or ultra-capacitor, ESD and EMI shielding, memory devices, field-effect transistor are discussed in details.