Graphene versus carbon nanotubes for chemical sensor and fuel cell applications.

Graphene, an atomically thin layer of sp(2) hybridized carbon, has emerged as a promising new nanomaterial for a variety of exciting applications including chemical sensors and catalyst supports. In this article, we survey modern methods of graphene production and functionalization with an emphasis on the development of chemical sensors and fuel cell electrodes with brief comparisons to state-of-the-art carbon nanotube-based systems.