*3.1.3 Metal oxide/CNT nanocomposites*

Carbonaceous materials have high power and low energy density which cause restrictions in their general application. However, metal oxides, due to their highenergy density, are used as pseudo capacitor electrodes for supercapacitors [45]. Yuan et al. [46] developed a new method for CNTs coated magnesium oxide (MgO) nanoparticles to increase the interfacial bonding strength. Yuan et al. [47] examined a sandwich structured MoO2 @TiO2 @CNT nanocomposite by an easy two steps synthesis method under Ar/H2 flow, controlled hydrolysis, and a subsequent heat treatment. Alam et al. [48] prepared BaMg0.5Co0.5TiFe10O19/MWCNT nanocomposites by varying the amount of MWCNTs (0, 4, 8, and 12 vol%). Nanocomposite with 8% vol. of MWCNTs performed best.
