▎ 摘　　要

NOVELTY - Graphene layers having a primary surface and a secondary surface are provided. The graphene layers are dispersed with a surfactant in a suspension, a metal oxide precursor is added, and metal oxide is precipitated to form a self-assembled nanocomposite material having several ordered layers. At least two of the ordered layers consist of a metal oxide layer directly bonded to primary surface of graphene layer. At least two ordered layers are bonded to one another such that the metal oxide layers and graphene layers are alternately positioned in the ordered layers. USE - Manufacture of self-assembled nanocomposite material. Uses include but are not limited to electrochemical device and energy storage device e.g. lithium ion battery and electrical double layer capacitor used as power supply for hybrid vehicles, plug-in hybrid vehicles and electric vehicles. ADVANTAGE - The self-assembled nanocomposite material provides energy storage device with high stability and high capacitance.