A facile blow spinning technique for green cellulose acetate/polystyrene composite separator for flexible energy storage devices

Electrospray Deposition of PEDOT:PSS on Carbon Yarn Electrodes for Solid-State Flexible Supercapacitors

“…Traditionally, a Nyquist plot of the supercapacitor device comprises three distinct regions with respect to the frequency range. In the high-frequency range, device behavior corresponds to the interfacial charge transfer resistance of the electrode/electrolyte interface, and the low-frequency range is ascribed to the capacitive nature of the electrode active material. , The medium frequency range is attributed to diffusion behavior that is an impact of the material porosities and surface states. The x-intercept of Zreal in the higher frequency range denotes the ohmic resistance ( R s ), which is comprised of the ionic resistance of the electrolyte, the intrinsic resistance of the active material, and the contact resistance at the interface of the active material and substrate (current collector).…”

“…Flexible supercapacitors (FSCs) and batteries are potential contenders for power supplies, but the environmental susceptibility of the latter, and the usage of toxic chemicals as electrolytes are subjects of concern. 5,6 FSCs' key challenge is the design and fabrication of active materials with robust mechanical flexibility and high energy coupled with remarkable cyclic and bending stability. 7,8 Active materials for FSCs range from carbonaceous materials (e.g., CNT, 9 graphene, 10 and carbon nanofibers 11 ), to transition metal oxides/dichalcogenides (e.g., MnO 2 12,13 MoS 2, 13 RuO 2, 14 NiO 2, 15 Co 3 O 4 16 ), conducting polymers (e.g., polyaniline (PANI), 17 polypyrrole (Ppy), 18 polythiophene 19 ) and composite materials (e.g., rGO/Fe 2 O 3 20 and PANI/MnO 2 21 ).…”

“…In this regard, fiber-based capacitors, in one-dimensional (1D) configuration, that ensure flexibility and wearability and can be easily weaved in conventional textiles are required. Flexible supercapacitors (FSCs) and batteries are potential contenders for power supplies, but the environmental susceptibility of the latter, and the usage of toxic chemicals as electrolytes are subjects of concern. , FSCs’ key challenge is the design and fabrication of active materials with robust mechanical flexibility and high energy coupled with remarkable cyclic and bending stability. , …”