Fabrication of Carbonaceous Nanotubes and Mesoporous Nanofibers as Stable Anode Materials for Lithium-Ion Battery

Abstract

The morphologies and pore architectures of carbon nanostructures could be precisely controlled via a selfassembly process. This work presented resorcinol-formaldehyde resin-silica composite nanofibers, which were synthesized through a sol−gel method under the help of costructure directing agent (CSDA) (S)-β-citronellol and nhexanol. The self-assembly process and the nanostructure of obtained composite nanofibers were changed by adding different CSDA. After carbonization and getting rid of silica, carbonaceous nanotubes and mesoporous nanofibers were obtained, respectively. Their electrochemical performance was tested as anode materials for lithium-ion batteries (LIBs). Stable discharge capacities of 574.3 mA h g −1 for carbonaceous nanotubes and 609.9 mA h g −1 for mesoporous carbonaceous nanofibers after 300 cycles were achieved at current density of 0.1 A g −1 . Thus, a facile method of designing and fabricating excellent carbon anode candidates for LIBs was provided.

Nitrogen‐Enriched Mesoporous Carbon Spheres as Efficient Anode Material for Long‐Cycle Li/Na‐Ion Batteries

“…As shown in Figure 2c, the higher ratio of I D /I G in the NPS-XAN (I D /I G ¼ 1.14) sample suggested that high defect structures were obtained through this process and these values are higher than previous reports. [43,44] Raman spectroscopy of C-XAN samples is investigated as shown in Figure S3, Supporting Information. The I D /I G ratio of C-XAN is (I D / I G ¼ 0.6).…”

Effect of synergy between pyrolysis carbon black and carbon nanofibers on composite properties

“…The reinforcing effect has also been achieved by filler blending while promoting the dispersion of the filler 26–29 . For example, Pingot et al 30 added different dispersants to CNFs/NBR composites to analyze the reinforcing effect of CNFs on NBR, and the results showed that the addition of dispersants was beneficial to improving the mechanical properties and electrical conductivity of the composites.…”

“…The reinforcing effect has also been achieved by filler blending while promoting the dispersion of the filler. [26][27][28][29] For example, Pingot et al 30 added different dispersants to CNFs/NBR composites to analyze the reinforcing effect of CNFs on NBR, and the results showed that the addition of dispersants was beneficial to improving the mechanical properties and electrical conductivity of the composites. Shi et al 31 prepared composites by blending CNTs/CNFs together and found that the blending of carbon materials could mutually promote the dispersion of fillers, which was very helpful in the strengthening the composites.…”

Electrospun Fe3O4-Sn@Carbon Nanofibers Composite as Efficient Anode Material for Li-Ion Batteries

“…Optimization of the nanostructure and preparation of composite materials can effectively inhibit volume expansion, reduce the electrical contact resistance, and improve the electrochemical performance of materials. Associated preparation methods of synthesizing revolutionary nanocomposites include electrospinning [ 29 ], pyrolysis [ 30 ], templating [ 31 ], chemical vapor deposition [ 32 ], sol-gel methods [ 33 ], and so on. A series of Fe 3 O 4 -based nanomaterials were prepared, such as Fe 3 O 4 nanowire arrays [ 34 ], Fe 3 O 4 /graphene composites [ 35 , 36 ], Fe 3 O 4 /carbon nanotube composites [ 37 ], hexahedral Fe 3 O 4 [ 38 ], and hollow Fe 3 O 4 spheres.…”