Abstract
Organic electrode materials hold great potential for fabricating sustainable energy storage systems, however, the development of organic redox-active moieties for rechargeable aqueous zinc-ion batteries is still at an early stage. Here, we report a bio-inspired riboflavin-based aqueous zinc-ion battery utilizing an isoalloxazine ring as the redox center for the first time. This battery exhibits a high capacity of 145.5 mAh g-1 at 0.01 A g-1 and a long-life stability of 3000 cycles at 5 A g-1 . We demonstrate that isoalloxazine moieties are active centers for reversible zinc-ion storage by using optical and photoelectron spectroscopies as well as theoretical calculations. Through molecule-structure tailoring of riboflavin, the obtained alloxazine and lumazine molecules exhibit much higher theoretical capacities of 250.3 and 326.6 mAh g-1 , respectively. Our work offers an effective redox-active moiety for aqueous zinc batteries and will enrich the valuable material pool for electrode design.
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.
