Synthesis and characterizations of MnMoO₄ for energy storage applications

The development of energy storage devices is starting to be required in order to solve the electricity challenge. As a well-known material for supercapacitors, MnMoO_4, prepared by the hydrothermal method, manganese molybdate (MnMoO₄) nanostructures were effectively created and studied as potential electrode materials for supercapacitor applications. The systematic characterizations were used to conduct thorough structural and surface analyses. While HR-TEM pictures displayed interconnected nanoflake characteristics, indicating a hierarchical architecture favorable for increased electrochemical activity, HR-SEM revealed a nanorod-like structure. The electrochemical analysis of cyclic-voltammetry (CV) and galvanostatic charge-discharge (GCD) was used to evaluate the electrochemical properties in a typical three-electrode setup. At a current density of 1 A/g and a scan rate of 5 mV/s, specific capacitance values of 378 F/g and 368 F/g were obtained from CV and GCD measurements, respectively. A mostly diffusion-controlled charge storage mechanism is indicated by the b-values (0.58 and 0.53) taken from CV, which suggest intercalation-type pseudocapacitive behavior. Low charge transfer resistance was also verified by impedance studies, suggesting effective ion transport and advantageous redox kinetics. Overall, hydrothermally produced MnMoO₄'s synergistic structural and electrochemical properties show promising high-performance electrode material for next-generation supercapacitor devices.