Owing to remarkable electrical, mechanical, thermal, catalytic, and optical properties as well as unique structure of carbon nanotubes and graphite, they have been exploited to produce high performance and multifunctional composites. The resultant composites are differentiated on the basis of their properties to meet various applications. In the framework of this review article, we have mainly focused the preparation, structure, and properties of two families of composite materials with an emphasis on difference between them. Moreover, the current challenges, future prospective and applications of CNTs and graphite-based materials in sensors, photovoltaic and energy storage devices (Li-ion battery) have been discussed.

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