Premium
Facile Synthesis of FeS 2 Quantum‐Dots/Functionalized Graphene‐Sheet Composites as Advanced Anode Material for Sodium‐ion Batteries
Author(s) -
Shao Yiben,
Yue Jili,
Sun Shuo,
Xia Hui
Publication year - 2017
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201600637
Subject(s) - anode , graphene , quantum dot , chemistry , composite material , ion , materials science , nanotechnology , electrode , organic chemistry
FeS 2 quantum‐dots/functionalized graphene‐sheet ( QDs / FGS ) composites are prepared by a facile and scalable method. The FeS 2 QDs / FGS composites can be used as anode materials for sodium‐ion batteries. The FeS 2 QDs / FGS composites can achieve large specific discharge and charge capacities of 742 and 683 mAh •g −1 (based on the total mass of the FeS 2 QDs / FGS composites) at the current density of 0.5 A•g −1 in the first cycle, respectively, and retain a reversible charge capacity of 552 mAh •g −1 after 100 cycles. The FeS 2 QDs / FGS composites can display high specific capacities of 452 and 315 mAh •g −1 at the high current densities of 2 and 5 A•g −1 . These results indicate that the FeS 2 QDs / FGS composites have good cycle performance and high rate capability, making them promising candidates as anode material for sodium‐ion batteries.