Core-shell N-doped carbon coated zinc ferrite nanofibers with enhanced Li-storage behaviors: A promising anode for Li-ion batteries

• Published in: Materials letters Vol. 224; pp. 89 - 91
• Main Authors: Bao, R.Q., Zhang, Y.R., Wang, Z.L., Liu, Y., Hou, L.R., Yuan, C.Z.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.08.2018; Elsevier BV
• Subjects: Anodes; Batteries; Carbon; Carbonization; Core-shell; Li-ion batteries; Lithium; Lithium-ion batteries; Materials science; Microstructure; Nanofibers; Rechargeable batteries; Semiconductors; Shell stability; Storage batteries; Zinc coatings; Zinc ferrite; Zinc ferrites; Zinc ferrite; Semiconductors; Microstructure; Core-shell; Li-ion batteries
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2018.04.091

1D core-shell ZnFe2O4@N-C NFs were synthesized, and exhibited high high-rate capacities and long-term cycling behaviors, benefiting from its structural and componental advantages. [Display omitted] •1D ZnFe2O4 nanofibers were massively synthesized via spinning.•Mesoporous ZnFe2O4 nanofibers were constructed with nanoscaled subunits.•ZnFe2O4 nanofibers were uniformly coated with ultrathin N-doped carbon shell.•Core-shell hybrid exhibited high-rate capacities and long cycling performance. In the work, one dimensional (1D) ZnFe2O4 nanofibers (ZFO NFs) coated with N-doped carbon shell (ZFO@N-C NFs) were synthesized via electrospinning coupled with ploydopamine coating and subsequent carbonization. Systematical characterizations showed that the ZFO NFs constructed with ∼10 nm nano-particle subunits were uniformly covered with the ultrathin N-doped carbon shell of ∼3 nm in thickness. When evaluated as a potential anode for Li-ion batteries, the resulted 1D core-shell ZFO@N-C NFs exhibited high-rate reversible capacities and long-term cycling stability.