Abstract
Controllable synthesis of FeS nanoparticles with high electrochemical performance is still a challenge for cheap Li-ion batteries. In this paper, FeS nanospheres/Fe/hard carbon mesoporous sheet (FeSNs-Fe/HCMS) nanocomposites are synthesized by using sulfate pulping red liquor (SPRL) as a multifunctional template. In the nanocomposite, FeS nanospheres (20–50 nm) are homogeneously embedded in Fe/hard carbon mesoporous sheets. The heterogeneous nucleation and confined growth mechanisms of FeS nanospheres are established. The synthesis mechanism and electrochemical reactions of FeSNs-Fe/HCMS nanocomposites are proposed. The influences of the additive amount of sulfate pulping red liquor on the structure and electrochemical performance of FeSNs-Fe/HCMS nanocomposites are investigated. The results of electrochemical investigation show that this nanocomposite anode exhibits a high initial discharge capacity of 1182 mAh g−1 at a current density of 1 A g−1, which is far beyond the theoretical specific capacity of FeS (609 mAh g−1). Even after cycling at 1 A g−1 over 100 cycles, this anode still retains a high discharge specific capacity of 881 mAh g−1. This work not only reduces pollution of sulfate pulping red liquor, but also benefits the utilization of waste, which proves that sulfate pulping red liquor has good application prospects in Li-ion batteries.
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.
