ABSTRACT
Graphene, a two-dimensional sp2-hybridized carbon, has received
considerable attention due to their high surface area, often-cited
desirable physical and electrochemical properties. Various efforts
have been made on the preparation of the graphene via a number
of physical and chemical methods. Some of these methods provide
high-quality graphene and have opened up new possible routes to
address the challenges in preparation and molecular engineering
of high-quality processable graphene. The high restacking rate of
graphene sheets is the major drawback to attain the forecasted
high surface area of 3620 m2/g and associated electrochemical
properties. As high surface area carbon materials are promising
for enhanced energy storage, attempts have been made to exploit
graphene and graphene-based nanocomposite electrode materials
for supercapacitor, Li-ion battery, and Li-air battery applications.
This chapter highlights the fundamentals and recent progress
in graphene and graphene-based nanocomposite materials as
electrodes for supercapacitor, Li-ion battery, and Li-air battery. And,
a brief description of the synthesis andmodification of graphene and
graphene-based nanocomposite materials is presented.
