Abstract
Lignin and cellulose are dominant components in biomass and hold the key for preparing hard carbons. Identifying the sodium storage behaviors of sole lignin/cellulose-derived hard carbons is significant for choosing optimal biomass precursors. Herein, milled-wood lignin and microcrystalline cellulose are used as model precursors to prepare hard carbons and the corresponding sodium storage performances are investigated to understand the contribution of each biomass component. Compared with lignin-derived carbon, cellulose-derived carbon enables a larger initial Coulombic efficiency of 87.1%, a higher reversible capacity of 343.3 mA h g−1 at 0.02 A g−1 and a good rate capability of 49.2 mA h g−1 at 1 A g−1 owing to larger La, lower ID/IG values and higher sp2C, CO contents with the benefit of enhancing the conductivity, plateau capacity, and the rapid diffusion of sodium ions. The excellent performance of cellulose-derived carbon provides guidance on the choice of biomass precursors for high-performance sodium-ion batteries.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.