the present invention provides a dispersible and electrically conductive nano graphene platelet material comprising at least a single - layer or multiple - layer graphene sheet , wherein the ngp material has an oxygen content no greater than 25 % by weight and no less than 5 % by weight . this ngp material can be produced by : preparing a pristine ngp material from a graphitic material ; and subjecting the pristine ngp material to an oxidation treatment . alternatively , the production process may comprise : preparing a graphite oxide from a laminar graphite material ; exposing the go to a first temperature for a first period of time to obtain exfoliated graphite ; and exposing the exfoliated graphite to a second temperature in a protective atmosphere for a second period of time . conductive ngps can find applications in transparent electrodes for solar cells or flat panel displays , additives for battery and supercapacitor electrodes , conductive nanocomposite for electromagnetic wave interference shielding and static charge dissipation , etc .