ABSTRACT
The demand for flexible electronics devices has been increasing due to their excessive use in implantable medical equipment, artificial skins, roll-up displays, and wearable devices. Huge specific energy and specific power flexible energy storage backup systems are required to operate the flexible devices. Nanowire is such a type of one-dimensional material, which can provide flexibility and mechanical stability to an energy storage device. Nanowires provide direct pathways to current flow, resulting in facilitation of electron movement more than other structures. The large specific surface area of nanowires enhances the contact area between electrode-electrolyte and as a result, the specific capacitance, energy, and power energy storage device increases. This chapter covers the use of nanowires in flexible energy storage devices, like supercapacitors, lithium-ion, sodium-ion, metal-air batteries, etc. Different types of carbon, polymer, organic, inorganic, and composite nanowires have been discussed briefly. Finally, the existing issues along with the current outlook have been addressed in this chapter.
