Abstract
In this study, we present willow wood as a new low-cost, renewable, and sustainable biomass source for the production of a highly porous activated carbon for application in energy storage devices. The obtained activated carbon showed favorable features required for excellent electrochemical performance such as high surface area (∼2 800 m2 g–1) and pore volume (1.45 cm3 g–1), with coexistence of micropores and mesopores. This carbon material was tested as an electrode for supercapacitor application and showed a high specific capacitance of 394 F g–1 at a current density of 1 A g–1 and good cycling stability, retaining ∼94% capacitance after 5 000 cycles (at a current density of 5 A g–1) in 6 M KOH electrolyte. The prepared carbon material also showed an excellent rate performance in a symmetrical two-electrode full cell configuration using 1 M Na2SO4 electrolyte, in a high working voltage of 1.8 V. The maximum energy density and power density of the fabricated symmetric cell reach 23 W h kg–1 and 10 000 W kg–1, respectively. These results demonstrate that willow wood can serve as a low-cost carbon feedstock for production of high-performance electrode material for supercapacitors.
Highlights
Energy storage devices such as batteries and supercapacitors play a significant role in the development of renewable and sustainable energy sources such as solar, geothermal, and wind energy.[1]
In this study, we present willow wood as a new low-cost, renewable, and sustainable biomass source for the production of a highly porous activated carbon for application in energy storage devices
Willow wood was successfully applied as a carbonaceous biomass feedstock for the synthesis of high surface area and pore volume activated carbon for application in electrode materials for supercapacitors
Summary
Energy storage devices such as batteries and supercapacitors play a significant role in the development of renewable and sustainable energy sources such as solar, geothermal, and wind energy.[1]. Compared to traditional fossil-based carbon sources, biomass is sustainable, structurally porous, abundant, renewable, and low-cost.[7,17] Besides, the majority of biomass sources are usually rich in heteroatoms such as N, S, P, and O These heteroatom-enriched resources can be used to synthesize heteroatom-doped ACs, providing pseudocapacitance, which can result in substantially increased overall capacitance.[26] biomass is considered an excellent green source for the fabrication of high-performance and efficient supercapacitor electrodes, which are largely based on renewable and sustainable materials. For practical applications, especially at large-scale, it is vital to utilize raw biomass sources with predictable and constant structure In this regard, we propose willow wood (WW) as a novel source for the synthesis of high-performance carbon electrodes for supercapacitors. This study demonstrates the possibility of using WW as a whole as an alternative green source for electrode fabrication for highperformance supercapacitors
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
