1D Spinel Architectures via Electrospinning for Supercapacitors

Supercapacitors have been publicized in current times as energy storage devices in regards to sustainability and renewability. Supercapacitors act as the conduit between the conventional capacitors and the batteries or fuel cells with superior power density, swift charge and discharge rates with long-term cycling performance. Hierarchical nanostructured materials with particular dimensions are reflected as electrode constituents for the high electrochemical performance of the supercapacitors. Researchers have focused on the utilization of fibrous templates having enlarged specific surface areas with multiple dynamic sites for the electrochemical reactions. The consequence of 1D nanostructures on the electrochemical behavior of the supercapacitors, which includes its specific capacitance, rate capability, cycling performance, has been summarized in this chapter. Electrospinning technique has proven itself as a simple, handy and greatly resourceful tactic to yield 1D architecture cross-breed nanomaterials having requisite dimensions. This chapter presents the electrospinning technique as an experimental approach by various researchers whereby tuning its important parameters such as deposition methods, solution flow rate for the electrospinning, applied electric potential, the needle tip and the collector distance, etc. in directive to obtain the desired electrochemical demonstration of the electrode materials. The chapter highlights the role of electrospinning technique for the formation of a wide variety of 1D spinels, which have strained attention as electroactive materials owing to their different metal centers and multiple redox states. The association among the configuration, construction and the electrochemistry associated is elaborated vividly. Finally, some concluding summaries with future outlook have been scripted predicting the fabrication of high-performance 1D electrospun electrode materials for supercapacitor applications.