Flexible heat-treated PAN nanofiber/MoO2/MoS2 composites as high performance supercapacitor electrodes

Aerobic Recovered Carbon Fiber Support-Based MoO2//MnO2 Asymmetric Supercapacitor with a Widened Voltage Window

“…Besides the specific capacitance, the ARCF support also widens the potential window of MoO 2 (Figure S4a). Usually, MoO 2 has a potential window not more than 1.0 V, 30,54,55 and it is clearly seen that the reduction current drops once the potential is above −1.0 V. Meanwhile, bare MnO 2 has a potential window not more than 1.0 V and visible polarization can be seen in Figure S5a. 56,57 The superior capacitive performance of the C-MoO 2 /ARCF-E electrode can be ascribed to the synergistic effect of MoO 2 (pseudocapacitance) and ARCF (electrical double-layer capacitance, EDLC).…”

“…Hence, when an active material is loaded on the surface of the carbon fiber/carbon cloth, electrodes are obtained without any further steps. 29,30 The synthesis of an active material of transition metal oxides and its loading on the support, i.e., all preparation procedures of an electrode, are simultaneously completed in the same process when a carbon fiber, carbon cloth, or carbon paper is adopted as a support. 13,31 Because of its good chemical/thermal stability, good electrical conductivity, light weight, high flexibility, and excellent mechanical properties, carbon fibers can be used directly as a conductive support for active materials, which are widely used in flexible wearable devices.…”

“…Unlike microscopic carbon, a carbon fiber or carbon cloth can serve as a macroscopic support, i.e., macroscopic current collector. Hence, when an active material is loaded on the surface of the carbon fiber/carbon cloth, electrodes are obtained without any further steps. , The synthesis of an active material of transition metal oxides and its loading on the support, i.e., all preparation procedures of an electrode, are simultaneously completed in the same process when a carbon fiber, carbon cloth, or carbon paper is adopted as a support. , Because of its good chemical/thermal stability, good electrical conductivity, light weight, high flexibility, and excellent mechanical properties, carbon fibers can be used directly as a conductive support for active materials, which are widely used in flexible wearable devices. , Liu et al prepared a positive electrode of PPy-MnO 2 /CF and a negative electrode of V 2 O 5 -PANI/CF through electrochemical deposition using carbon fibers as a support and assembled them into an ASC …”

Design Strategies for Development of TMD-Based Heterostructures in Electrochemical Energy Systems

“…In the work by Mu et al, MoO 2 /MoS 2 composites supported on heat-treated polyaniline nanofibers were synthesized. 147 Notably, the flexible 1D nanofiber support present in the heterostructure facilitated cycling stability and prevented severe volume change taking place with charging-discharging processes, whereas the large specific surface area offered an increased active site for redox processes and charge storage. Due to the synergistic effect from respective constituents, the electrode delivered a high specific capacitance of 439.8 F g À1 at 1 A g À1 .…”

One-Step Hydrothermal Synthesis of MoO2/MoS2 Nanocomposites as High-Performance Electrode Material for Supercapacitors

“…In another development, MoS x /MoO 2 nanostructures were grown on activated carbon cloth by employing a simple one-step microwave-assisted hydrothermal approach . Also, through in situ conversion reaction and facile solvothermal method, heat-treated PAN/MoO 2 /MoS 2 (PMOS) ternary structure nanofibers were synthesized by Mu et al An asymmetric supercapacitor assembled from active carbon (AC) and heat-treated PMOS nanofibers could light up a LED belt . Compared to other chemical synthesis methods, the hydrothermal method exhibits great potential due to its simplicity and wide range of applicability with high electrochemical performance. , Currently, Zhang et al obtained a MoO 2 nanocrystal array covered by ultrathin MoS 2 on sulfur-doped graphene framework by high-temperature annealing based on a hydrothermal method.…”