MXene-drivenin situconstruction of hollow core-shelled Co₃V₂O₈@Ti₃C₂T_xnanospheres for high-performance all-solid-state asymmetric supercapacitors

Abstract

Ti3C2Tx MXene wrapped hollow Co3V2O8 nanospheres are simply prepared by using the pre-prepared Ti3C2Tx nanoflakes as the nucleation site and precursor to promote the uniform growth of hollow Co3V2O8 nanospheres...

Recent Advances and Strategies in MXene-Based Electrodes for Supercapacitors: Applications, Challenges and Future Prospects

“…A nanostructure was fabricated by combining Ti 3 C 2 T x with Co 3 V 2 O 8 to achieve higher capacity and long-term stability for supercapacitor applications [ 227 ]. The hollow Co 3 V 2 O 8 @Ti 3 C 2 T x nanospheres were made by a one-step hydrothermal method using Ti 3 C 2 T x flakes as precursors.…”

“…The RuCo2O4/Ti3C2Tx symmetric device delivered a high capacitance of 229 F g −1 , an ED of 20.4 Wh kg −1 at a PD of 2400 W kg −1 and a capacitance retention of over 90% after 5000 cycles. The improved performance of the RuCo2O4/Ti3C2Tx supercapacitor is attributed to the interaction between RuCo2O4 and Ti3C2Tx for efficient charge transfer to the porous structure of RuCo2O4/Ti3C2Tx nanostructures for improved electrical active sites and ion transport, and to the synergistic effect A nanostructure was fabricated by combining Ti 3 C 2 T x with Co 3 V 2 O 8 to achieve higher capacity and long-term stability for supercapacitor applications [227]. The hollow Co 3 V 2 O 8 @Ti 3 C 2 T x nanospheres were made by a one-step hydrothermal method using Ti 3 C 2 T x flakes as precursors.…”

MOP−18−Derived CuO Fiber for Hybrid Supercapacitor Electrodes

“…A physical blend of carbon and redox−active materials often falls short of providing these necessities to the redox−active species. Therefore, specialized structures, such as core–shell, 1D and 2D hybrids, intimate contact composites and advanced mixing techniques, such as in situ dispersion, are essential for both components to operate optimally [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ]. Electrospinning, an in situ dispersion technique, was utilized in this study to prepare uniform composite fiber mats from PC and EDLC precursors, followed by carbonization to prepare the electrodes.…”

Revealing the Effect of the [CoO]6 Microstructure in Pseudocapacitance by Controlled Delithium of LiCoO2

“…L 0.75 CO is more beneficial for ionic diffusion and transport of the solute (Figure 4f). 33 Figure 4g shows the cycling stability of LCO and L 0.75 CO electrodes. After 2000 cycles, L 0.75 CO still affords 87% capacitance, whereas LCO exhibits only 78% capacitance.…”

“…Most impressively, the reality–virtuality capacitance of L 0.75 CO decreases much more rapidly than that of LCO with the increased frequency. L 0.75 CO is more beneficial for ionic diffusion and transport of the solute (Figure f) Figure g shows the cycling stability of LCO and L 0.75 CO electrodes.…”