Impact of Green Synthesized Copper Doped Nanostructured Molybdenum Oxide Flakes on Micro Structural, Electrical, and Electrochemical Properties

Abstract

In the present work, the different weight percentage (0, 2, 4, 6, 8, and 10 wt %) of copper (Cu) incapacitated MoO3 flakes were successfully green synthesized by combustion technique using precursor ammonium heptamolybdate tetrahydrate, fuel Shorea Robusta leaves extract, and copper nitrate trihydrate as dopant. XRD analysis reports that the synthesized Cu doped MoO3 material exhibits orthorhombic configuration with high crystallanity nature and the XRD pattern show a shift in diffractive peak towards lower diffractive angle as the Cu dopant percentage increases. FT-IR analysis shows the presence of stretching bond between molybdenum and oxygen atom (Mo=O) at 993cm-1. From SEM morphological analysis flake like structure was observed. The HRTEM studies shows d-spacing of 0.20 nm for 6 wt% Cu doped MoO3 flakes with irregular shapes. UV-DRS studies reports the bandgap ranges from 3.15 eV to 3.36 eV for different weight percentage Cu doped MoO3 flakes and for 6 wt% Cu doped MoO3 flakes obtained bandgap is less (3.15 eV). EIS studies reveal the impedance ranges from 180 Ω to 300 Ω. The bandgap and impedance results shows good conductivity for 6 wt% Cu doped MoO3 flakes compared to other synthesized weight percentage nanostructured Cu doped MoO3 flakes. The improved bandgap and impedance were observed for 6 wt% Cu doped MoO3. Hence, 6 wt% Cu doped MoO3 can be employed as anode electrode material for LIBs.