Solvothermal route based in situ carbonization to Fe3O4@C as anode material for lithium ion battery

Sandwich-like mesoporous graphene@magnetite@carbon nanosheets for high-rate lithium ion batteries

“…Among the transition-metal-based electrode materials, Fe 3 O 4 is considered to be promising one to be in widely used because of its advantages such as earth-abundance, environment-friendliness and high specific capacity [9,11,15]. In order to improve both cycle performance and rate capability of Fe 3 O 4 , it is considered as an effective method when composited with grapheme due to the unique physicochemical advantages of graphene: large surface area, high flexibility, superior electronic conductivity [16e19].…”

Encapsulation of Fe3O4 Nanoparticles into N, S co-Doped Graphene Sheets with Greatly Enhanced Electrochemical Performance

“…One efficient strategy is to design the nanomaterials or nanostructures via reducing the particle size of Fe 3 O 4 down to the nanometer scale, which could accommodate or buffer the volume changes, greatly reduce the strain that originates from the lithiation and dilithiation process, directly shorten the transport path and the diffusion time for lithium ions, and furthermore, offer more active sites for lithium ions during charge/discharge cycling processes. Many nano-scale Fe 3 O 4 architectures, such as nanotubes161718, nanobelts19, nanofibers2021, nanospheres2223, nanorods2425, and so on, have been prepared by many different methods, including the hydrothermal method26, the solvothermal route27, the electrospinning method21, electrochemical techniques, etc. Another alternative strategy is to combine Fe 3 O 4 in the form of nanostructures with a high conductivity matrix including various metal nanostructures128, carbon materials2729 and other stable materials, which could cushion the mechanical effects aroused during the charge/discharge process and simultaneously improve the conductivity of the composite.…”

“…Many nano-scale Fe 3 O 4 architectures, such as nanotubes161718, nanobelts19, nanofibers2021, nanospheres2223, nanorods2425, and so on, have been prepared by many different methods, including the hydrothermal method26, the solvothermal route27, the electrospinning method21, electrochemical techniques, etc. Another alternative strategy is to combine Fe 3 O 4 in the form of nanostructures with a high conductivity matrix including various metal nanostructures128, carbon materials2729 and other stable materials, which could cushion the mechanical effects aroused during the charge/discharge process and simultaneously improve the conductivity of the composite. Up to now, hybridization of carbon materials including the amorphous carbon20, carbon nanotube1630, and the recently-developed graphene with Fe 3 O 4 may be one of the most effective solution.…”

One-pot synthesis of core–shell-structured tin oxide–carbon composite powders by spray pyrolysis for use as anode materials in Li-ion batteries

“…5 The crystal structure of the powders was investigated using X-ray diffractometry (XRD, Rigaku DMAX-33) using Cu-Kα radiation (λ = 1.5418 Å) at the Korea Basic Science Institute (Daegu). The morphologies of the obtained powders were characterized using scanning electron microscopy (SEM, JEOL JSM-6060) and high-resolution transmission electron microscopy (TEM, JEOL JEM-2010).…”