Abstract
Vanadium redox flow batteries (VRFBs) have attracted considerable attentions for their promising applications as large-scale energy storage devices. However, the widespread implementation of VRFBs is still hindered by the severe overpotentials of redox reactions, due to the poor electrochemical activities of conventional carbon felt (CF) electrodes. Herein, we present the fabrication of biomass lotus seed shells-modified CF (Bio-CF) electrode, which exhibits remarkable electrocatalytic effects on both the V2+/V3+ and VO2+/VO2+ redox reactions. The influences of auxiliary sucrose concentration and pyrolysis temperature were investigated to optimize the Bio-CF electrodes. Meanwhile, molecular dynamic simulations were employed to verify the experimental data. Furthermore, high performance VRFBs were achieved with the optimized Bio-CF electrode, affording high energy efficiency (83.14 %) and outstanding cycling stability under a current density of 100 mA cm−2. It is believed that the strategy to improve electrochemical performance of CF modified by cost-effective biomass materials provides a promising route for developing high performance VRFBs.
Sign-in/Register to access full text options 
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.
