Silicon nanocrystals-embedded carbon nanofibers from hybrid polyacrylonitrile – TEOS precursor as high-performance lithium-ion battery anodes

Hamedani, Ali Ansari; Ow‐Yang, Cleva W.; Soytaş, Serap Hayat

doi:10.1016/j.jallcom.2022.164734

Cited by 10 publications

(5 citation statements)

References 41 publications

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“…Furthermore, as depicted in Figure 4c, the TEM image shows the expansion of in‐situ SiO 2 particles after several cycles. Decreasing the strain and stress caused by SiO 2 particles expansion is conductive to prolong anode cycling life [42] . As illustrated in Figure 4d, the explicit differences based on structure and materials of anodes were analyzed by the following illustration: i) the surface membrane CNFs can effectively reduce the differentiation and abscission of particles in the process of circulation; ii) significantly, the silica composite carbon spheres prepared by electrostatic spray greatly improve the loading of active particles in composite anode materials.…”

Section: Resultsmentioning

confidence: 99%

Preparation of a SiO₂@Carbon Sphere/SiO₂−CNF Multilayer Self‐standing Anode Prepared via an Alternate Electrospraying – Electrospinning Technique

Wang

Sun

Dong

et al. 2023

Chemistry An Asian Journal

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The development of flexible lithium‐ion batteries (FLIBs) is restrained by traditional rigidity anodes. Carbon nanofiber (CNF) is a promising anode material owing to its high specific surface and superior ion transportation capability. However, the low amount of active material loaded on the CNFs and the poor stability during long cycling restrain their applications. Herein, a SiO2@carbon sphere/SiO2−CNF self‐standing anode was prepared via alternate electrospraying‐electrospinning. The SiO2 content of the anode was increased through the electrospraying SiO2@carbon spheres layers, and the electrospun SiO2−CNFs as robust layers enhanced the stability of the anode. The self‐standing anode exhibited 633 mA h g−1 in the initial cycle and maintained a 70% Coulomb efficiency for 1000 cycles at a current density of 100 mA g−1, which could be applied in FLIB and other electrochemical storage devices.

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Section: Resultsmentioning

confidence: 99%

Preparation of a SiO₂@Carbon Sphere/SiO₂−CNF Multilayer Self‐standing Anode Prepared via an Alternate Electrospraying – Electrospinning Technique

Wang

Sun

Dong

et al. 2023

Chemistry An Asian Journal

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“…Dirican et al 3 fabricated binder-free Si/SiO 2 /CNF composites with the first-cycle discharge capacity of 1206 mAh•g −1 at 0.1 A•g −1 . Hamedani et al 17 employed CNF-Si/ SiO x materials as LIB anodes without any binders, showing a reversible capacity of 860 mAh•g −1 at 0.2 A•g −1 . Additionally, structural design and heteroatom doping of carbon nanofibers are effective strategies to improve the electrochemical properties of Si/CNF composites.…”

Section: Introductionmentioning

confidence: 99%

“…Carbon materials have the advantages of good electrical conductivity and stable deintercalation of lithium. Therefore, Si and carbon materials like graphene, , porous carbon, , carbon nanotubes, , and carbon fibers ,, have been composited to enhance electrical conductivity, cyclic stability, and rate performance. In particular, carbon nanofibers (CNFs) are very promising anodes for LIBs, which possess good conductivity, high specific surface area, and freestanding properties.…”

Section: Introductionmentioning

confidence: 99%

Freestanding Porous Silicon@Heteroatom-Doped Porous Carbon Fiber Anodes for High-Performance Lithium-Ion Batteries

Wang

Yuan

Liu

et al. 2022

ACS Appl. Energy Mater.

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Silicon suffers from high volume variation and poor conductivity, which limits its commercial application in lithium-ion battery anode materials. To improve the stability of Si-based electrodes, the porous structure was designed for both Si and carbon fiber. Furthermore, heteroatom doping was adopted to enhance the conductivity of carbon fiber. Three freestanding porous silicon@heteroatom-doped porous carbon fiber was successfully prepared by coaxial electrospinning. The impact of sulfur/boron doping on the electrochemical properties of anodic materials is systematically researched. The porous structure of both silicon and carbon fiber efficiently relieves the volume expansion of silicon and provides diffusion channels for ion transportation, while the S doping can increase active sites. Relying on the distinctive structure, the porous silicon@sulfur-doped porous carbon fiber (PSi@ SPCF) exhibits virtually the highest reversible capacities over the reported silicon@carbon fiber composites, with an excellent reversible capacity of 1112.7 mAh•g −1 after 1000 cycles at 2.0 A•g −1 , indicating the potential application of the PSi@SPCF composites in advanced energy storage.

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“…Additionally, the build-up of SEI debris may impair charge transfer characteristics, accelerating capacity deterioration. [12][13][14] Also, weak electronic conductivity and lithium-ion diffusivity in silicon further reduce electrode rate capability. 15 To overcome the drawbacks of silicon in lithium-ion batteries, new electrode materials with high specific capacity, stable mechanical structure, high electrical conductivity, and a short diffusion path for Li ion transport must be developed.…”

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confidence: 99%

A Tripartite Composite Incorporating Nitrogen-Doped Graphene Oxide, Polypyrrole, and Silica for Lithium-Ion Battery Anodes

Al-Bujasim,

Gencten,

Donmez

et al. 2024

ECS J. Solid State Sci. Technol.

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In this study, N-doped graphene oxide-polypyrrole-silica (NGO-PPy-SiO2) composite was employed as a possible anode in Li-ion batteries. The chronoamperometric technique was employed to synthesize NGO, and within this study two samples were produced, one characterized by a high polypyrrle content (N1) and the other by a low polypyrrle content (N2). N2 has the maximum initial discharge capacity of 785 mAh/g at 0.1C, which is greater than N1's capacity of 501 mAh/g. The initial coulombic efficiency of the first cycle is around 72%, whereas the ICE of N2 is approximately 60%. N1 demonstrates outstanding cycling performance for 100 cycles at high rate (10 C) with maintain capacity as 100% and coulombic efficiency of 100%, as well as extremely stable capacity during the cycling. N2 has a maintain capacity of ≈ 79% and excellent coulombic efficiency, however the capacity during cycling is not as stable as N1.

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Silicon nanocrystals-embedded carbon nanofibers from hybrid polyacrylonitrile – TEOS precursor as high-performance lithium-ion battery anodes

Cited by 10 publications

References 41 publications

Preparation of a SiO₂@Carbon Sphere/SiO₂−CNF Multilayer Self‐standing Anode Prepared via an Alternate Electrospraying – Electrospinning Technique

Preparation of a SiO₂@Carbon Sphere/SiO₂−CNF Multilayer Self‐standing Anode Prepared via an Alternate Electrospraying – Electrospinning Technique

Freestanding Porous Silicon@Heteroatom-Doped Porous Carbon Fiber Anodes for High-Performance Lithium-Ion Batteries

A Tripartite Composite Incorporating Nitrogen-Doped Graphene Oxide, Polypyrrole, and Silica for Lithium-Ion Battery Anodes

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Silicon nanocrystals-embedded carbon nanofibers from hybrid polyacrylonitrile – TEOS precursor as high-performance lithium-ion battery anodes

Cited by 10 publications

References 41 publications

Preparation of a SiO2@Carbon Sphere/SiO2−CNF Multilayer Self‐standing Anode Prepared via an Alternate Electrospraying – Electrospinning Technique

Preparation of a SiO2@Carbon Sphere/SiO2−CNF Multilayer Self‐standing Anode Prepared via an Alternate Electrospraying – Electrospinning Technique

Freestanding Porous Silicon@Heteroatom-Doped Porous Carbon Fiber Anodes for High-Performance Lithium-Ion Batteries

A Tripartite Composite Incorporating Nitrogen-Doped Graphene Oxide, Polypyrrole, and Silica for Lithium-Ion Battery Anodes

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Preparation of a SiO₂@Carbon Sphere/SiO₂−CNF Multilayer Self‐standing Anode Prepared via an Alternate Electrospraying – Electrospinning Technique

Preparation of a SiO₂@Carbon Sphere/SiO₂−CNF Multilayer Self‐standing Anode Prepared via an Alternate Electrospraying – Electrospinning Technique