Synergistic Charge Storage Enhancement in Supercapacitors via TiCT MXene and CoMoO Nanoparticles.

MXene has emerged as a highly promising two-dimensional (2D) layered material with inherent advantages as an electrode material, such as a high electrical conductivity and spacious layer distances conducive to efficient ion transport. Despite these merits, the practical implementation faces challenges due to MXene's low theoretical capacitance and issues related to restacking. In order to overcome these limitations, we undertook a strategic approach by integrating TiCT MXene with cobalt molybdate (CoMoO) nanoparticles. The CoMoO nanoparticles bring to the table rich redox activity, high theoretical capacitance, and exceptional catalytic properties. Employing a facile hydrothermal method, we synthesized CoMoO/TiCT heterostructures, leveraging urea as a size-controlling agent for the CoMoO precursors. This innovative heterostructure design utilizes TiCT MXene as a spacer, effectively mitigating excessive agglomeration, while CoMoO contributes its enhanced redox reaction capabilities. The resulting CoMoO/TCT MXene hybrid material exhibited 698 F g at a scan rate of 5 mV s, surpassing that of the individual pristine TiCT MXene (1.7 F g) and CoMoO materials (501 F g). This integration presents a promising avenue for optimizing MXene-based electrode materials, addressing challenges and unlocking their full potential in various applications.