Synthesis of nitrogen and sulfur co-doped graphene supported hollow ZnFe2O4 nanosphere composites for application in lithium-ion batteries
2016; Elsevier BV; Volume: 691; Linguagem: Inglês
10.1016/j.jallcom.2016.08.285
ISSN1873-4669
AutoresMingyue Wang, Ying Huang, Xuefang Chen, Ke Wang, Haiwei Wu, Na Zhang, Haitao Fu,
Tópico(s)Supercapacitor Materials and Fabrication
ResumoNitrogen and sulfur co-doped graphene supported hollow ZnFe2O4 nanosphere composites have been successfully synthesized via a facile, two-step hydrothermal method. The obtained ZnFe2O4/NSG samples show interconnected hollow sphere nanostructure with a size of ∼250 nm. The product demonstrated a high initial discharge capacity of 2478.6 mAhg−1 at a rate of 300 mAg−1. After 100 cycles, it delivered a high reversible capacity of 729.06 mAhg−1 and coulombic efficiency of 99.36%, while at high rate capability of 1800 mAg−1, the rate capacity stabilize at 650.1 mAhg−1. It is believed that the composite with good rate capability and stability can be a competitive anode for lithium-ion batteries.
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