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Supersonic solution blowing: a novel approach to producing self-supported carbon–silica microporous nanofibers for Li-ion battery anodes

Silva, Vinícius D. ; Gonçalves, Josué M. ; Dias, Yasmin J. ; Simões, Thiago A. ; Macedo, Daniel A. ; Shahbazian-Yassar, Reza ; Torresi, Roberto M. ; Yarin, Alexander L. ; Medeiros, Eliton S.

Journal of materials science, 2024-02, Vol.59 (6), p.2449-2465 [Periódico revisado por pares]

New York: Springer US

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Título:
Supersonic solution blowing: a novel approach to producing self-supported carbon–silica microporous nanofibers for Li-ion battery anodes
Autor: Silva, Vinícius D. ; Gonçalves, Josué M. ; Dias, Yasmin J. ; Simões, Thiago A. ; Macedo, Daniel A. ; Shahbazian-Yassar, Reza ; Torresi, Roberto M. ; Yarin, Alexander L. ; Medeiros, Eliton S.
Assuntos: Additives ; Anodes ; Blowing ; Carbon fibers ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Classical Mechanics ; Crystallography and Scattering Methods ; Electrode materials ; Electrodes ; Energy Materials ; Lithium-ion batteries ; Materials Science ; Nanofibers ; Nanoparticles ; Polymer Sciences ; Rechargeable batteries ; Silicon dioxide ; Size distribution ; Solid Mechanics
É parte de: Journal of materials science, 2024-02, Vol.59 (6), p.2449-2465
Descrição: The development of self-supporting electrodes, which are binder-, and additives-free, is essential for increased performance and practical applications of lithium-ion batteries (LIBs). With this aim, we report here the synthesis of carbon nanofiber (CNF) composites containing silica (SiO 2 ) nanoparticles via Supersonic Solution Blowing (SSB) as self-supporting electrodes of LIBs. Nanofibers with average diameter in the 86–271 nm range, and specific surface area (SSA) in the 619–1981 m 2 /g were obtained. SiO 2 content altered not only the diameter and the SSA, but also the pore-size distribution. A tri-modal pore-size distribution pattern was obtained for all specimens. Used as a self-supporting anode material for LIBs, carbon nanofiber-based composite electrodes achieved high reversible capacity, high-rate capacity, and superior cyclic stability (305–444 mAh g −1 at 0.1 A g −1 after 200 cycles), at the Coulombic efficiencies of 97−99%. Lastly, enhanced capacity can be attributed to the addition of SiO 2 nanoparticles up to 2.5%. However, for higher silica content, the loss in performance can be attributed to an increase in the mean nanofiber diameter and a drastic reduction in SSA and porosity caused by the presence of nanoparticles. Graphical Abstract
Editor: New York: Springer US
Idioma: Inglês

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Supersonic solution blowing: a novel approach to producing self-supported carbon–silica microporous nanofibers for Li-ion battery anodes

Silva, Vinícius D. ; Gonçalves, Josué M. ; Dias, Yasmin J. ; Simões, Thiago A. ; Macedo, Daniel A. ; Shahbazian-Yassar, Reza ; Torresi, Roberto M. ; Yarin, Alexander L. ; Medeiros, Eliton S.

New York: Springer US

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