Effects of ammonolysis and of sol–gel titanium oxide nitride coating on carbon fibres for use in flexible supercapacitors

Abstract

Smooth titanium oxide nitride coatings have been deposited on carbon fibres using a non-oxide sol–gel method based on self-condensation of titanium alkylamide species. Flexible supercapacitors made from the fibres had competitive energy and power densities.

Self-Assemble Strategy to Fabricate High Polyaniline Loading Nanocarbon Hydrogels for Flexible All-Solid-State Supercapacitors

“…The extraordinary applications of smart devices, such as electronic skin, microrobotics, epidermal and implantable medical devices, and sensor networks, have caused a rapid development in portable and wearable electronics. − Therefore, a matchable energy storage device has to be designed and fabricated to meet the requirements of being not only flexible and wearable, ultrathin, and lightweight but also possessing high electrochemical performance. , Flexible all-solid-state supercapacitors are the best potential candidates due to their high power density, fast charge and discharge capacitor performance, and superior safety to that of batteries. − The electrode materials chosen for flexible all-solid-state supercapacitors must exhibit high capacitance, outstanding mechanical and electrical properties, superior cycling stability, and the ability to accommodate various strain conditions without performance degradations. − At present, great efforts are devoted to develop the flexible electrodes, − including electrode materials deposited on soft-supported substrates such as paper, cloth, sponge, and plastic or free-standing carbon films (CNT, carbon fiber, graphene, or MXene carbon) and their composites with conducting polymers and metal oxides.…”

Advanced Inorganic Nitride Nanomaterials for Renewable Energy: A Mini Review of Synthesis Methods

“…For example, TiN nanoparticles (NPs) were coated on carbon fibers via a sol-gel method based on self-condensation of titanium alkyl amide species. In this work, the capacity of the coated fibers was increased with significant redox capacitance contributions (Zhang et al, 2018). In another example, ZrN NPs have been prepared by heating the ZrCl 4 -Urea sol-gel under an argon flow, which showed better ORR activity than commercial Pt/C catalysts in an alkaline environment (Yuan et al, 2020).…”

Synthesis of Hard Carbon-TiN/TiC Composites by Reacting Cellulose with TiCl4 Followed by Carbothermal Nitridation/Reduction

“…For instance, Zhu et al 23 synthesized MoN@nitrogen-doped carbon electrocatalysts by decomposing a metal−organic framework to MoO 2 −C followed by calcination under ammonia. Zhang et al 24 deposited titanium nitride on carbon fibers using a sol−gel method and then applied this coating in flexible supercapacitors. Cao et al 25 applied a solvothermal method followed by firing at 550 °C under an H 2 −Ar mix to obtain Mo 2 C−C hybrid nanospheres, displaying a better cyclic performance in LIBs than bulk Mo 2 C.…”