Fabrication of Si core/C shell nanofibers and their electrochemical performances as a lithium-ion battery anode

Lee, Byoung-Sun; Son, Seoung‐Bum; Park, Kyu-Min; Seo, Jong-Hyun; Lee, Se-Hee; Choi, In‐Suk; Oh, Kyoung-Hee; Yu, Woong‐Ryeol

doi:10.1016/j.jpowsour.2012.01.120

Cited by 139 publications

(95 citation statements)

References 49 publications

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“…S6). A better cycling performance can be obtained by increasing the amount of binder content and conducting agent, as we proved in the previous works [1,19,31,32].…”

Section: Electrochemical Performances Of Cvd-hcnfssupporting

confidence: 62%

“…Although both CVD-HCNFs and HCNFs exhibit Li insertion/extraction peaks at around 0.1 V (Fig. 3(c)) [1], the CVD-HCNF voltage profiles converged much faster according to the cycling. It is well-known that the negative peak at around 0.85 V during the first discharge is related to Li insertion into pores, while the peak at around 0.75 V originates from the solid-electrolyte-interface formation [24].…”

Section: Electrochemical Performances Of Cvd-hcnfsmentioning

confidence: 98%

“…Recent developments in Li-ion batteries have induced rapid progress of ubiquitous communication devices and electrical vehicles [1]; however, the low capacity of the existing electrode materials such as graphite (372 mA h g À1 ) and LiCoO 2 (140 mA h g À1 ) is an obstacle to satisfy the various customer demands [2][3][4][5]. In spite of their low specific capacity, the good electrical and mechanical properties of carbon materials are still attractive such that various studies have been carried out to develop carbon-based composite electrode materials [6], e.g., silicon (Si)/carbon (C) composite anodes [7].…”

Section: Introductionmentioning

confidence: 99%

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Facile method to improve initial reversible capacity of hollow carbon nanofiber anodes

Lee

Yang

Jung

et al. 2015

European Polymer Journal

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“…S6). A better cycling performance can be obtained by increasing the amount of binder content and conducting agent, as we proved in the previous works [1,19,31,32].…”

Section: Electrochemical Performances Of Cvd-hcnfssupporting

confidence: 62%

Section: Electrochemical Performances Of Cvd-hcnfsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Facile method to improve initial reversible capacity of hollow carbon nanofiber anodes

Lee

Yang

Jung

et al. 2015

European Polymer Journal

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“…This co-insertion into the active material and current collector equilibrates after the second cycle. The increasing rate of Li-Si formation can be attributed to an activation effect [51] clear that no significant volume change effects occur in stable In 0 nanodots [52]; faceting related to the structure of In2O3 is also lost during electrochemical reduction to the pure metal.…”

Section: Reversible Electrochemical Li-insertionmentioning

confidence: 99%

Epitaxial growth of visible to infra-red transparent conducting In₂O₃nanodot dispersions and reversible charge storage as a Li-ion battery anode

Osiak¹,

Khunsin²,

Armstrong³

et al. 2013

Nanotechnology

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. (2013) AbstractUnique bimodal distributions of single crystal epitaxially grown In2O3 nanodots on silicon are shown to have excellent IR transparency greater than 87% at IR wavelengths up to 4 µm without sacrificing transparency in the visible region. These broadband antireflective nanodot dispersions are grown using a two-step metal deposition and oxidation by molecular beam epitaxy, and backscattered diffraction confirms a dominant (111) These properties could potentially lead to further development of similarly controlled dispersions of a range of other active materials to give transparent battery electrodes or materials capable of non-destructive in-situ spectroscopic characterization during charging and discharging.3

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“…20 One effective strategy to accommodate the extreme volume changes of Si is to limit its extent of alloying with Li by introducing resilient additives into the electrode. [11][12][13][14][21][22][23] These additives encapsulate the Si particles as rigid matrix agents, restricting the particles' free expansion during lithiation, and thereby lowering the number of moles of Li alloying with each Si particle. The restricted lithiation of the Si particles results in a lower specific capacity for the electrode, but this limited capacity can be more reliably maintained with fewer irreversible capacity losses in the subsequent cycles.…”

mentioning

confidence: 99%

Nanostructured Si/C Fibers as a Highly Reversible Anode Material for All-Solid-State Lithium-Ion Batteries

Kim

Dunlap

Han

et al. 2018

J. Electrochem. Soc.

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This study demonstrates the application of Si/C composite fibers as anode materials for all-solid-state lithium-ion batteries. Using polyacrylonitrile as the carbon precursor, Si/C fibers were prepared through electrospinning and subsequent heat-treating processes. To investigate the correlation between fiber diameter and electrochemical performance, we prepared three electrodes (A, B, C), containing Si/C fibers with ∼2 μm, ∼1 μm and ∼0.1 μm diameters, respectively. Our results revealed that although the composition of all three electrodes was nearly the same, the Si/C fiber based electrodes exhibited better capacity retention when their fiber diameters were smaller. Normalized to the total mass of electrode composite, the solid-state half-cell prepared with the smallest diameter (∼0.1 μm) Si/C fibers achieved a reversible specific capacity of ∼700 mAh g −1 (normalized to electrode mass) over 70 cycles. We believe that this report can serve as an informative approach toward the utilization of electrospun Si/C fibers as anode materials for all-solid-state lithium-ion batteries. Lithium-ion batteries (LIBs) have widely been used as portable energy storage devices owing to their great reversibility, long cycle life and high power output without memory effect.1,2 However, current LIBs utilizing conventional organic liquid electrolytes still have significant safety risks, such as operational instability at elevated temperatures, leakage of hazardous solvents and ignition by external damages.3-6 To overcome these safety risks, the development of the all-solid-state lithium-ion battery (SLIB) has attracted considerable attention. [3][4][5][6][7][8][9][10][11] In the SLIB configuration, a highly Li-ion conductive solid-state electrolyte (SSE) layer is deployed between positive and negative electrodes in place of the organic liquid electrolytes typically used in LIBs. This replacement of the liquid electrolyte with a highly conductive ceramic material is expected to improve both the SLIB's thermal and mechanical stabilities.To date, graphite has been extensively used as an anode material in LIBs; however, its limited capacity (372 mAh g −1 ) has been regarded as a drawback to achieving higher energy density LIBs. Silicon is considered to be a promising anode material alternative to graphite due to its large theoretical capacity (3,579 mAh g −1 ), low cost and high earth abundance.9,11-17 To achieve such a high capacity, Si inevitably undergoes a massive volume expansion/contraction process when alloying/de-alloying with Li. 18,19 Since the repeated volume changes of Si particles during cycling causes cracking, pulverization and rapid capacity fading brought on by the electrochemical isolation of active materials, it is believed that an effective accommodation of this Si volume change is essential for achieving acceptable capacity retention in these anodes. 20One effective strategy to accommodate the extreme volume changes of Si is to limit its extent of alloying with Li by introducing resilient additives into the electro...

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Fabrication of Si core/C shell nanofibers and their electrochemical performances as a lithium-ion battery anode

Cited by 139 publications

References 49 publications

Facile method to improve initial reversible capacity of hollow carbon nanofiber anodes

Facile method to improve initial reversible capacity of hollow carbon nanofiber anodes

Epitaxial growth of visible to infra-red transparent conducting In₂O₃nanodot dispersions and reversible charge storage as a Li-ion battery anode

Nanostructured Si/C Fibers as a Highly Reversible Anode Material for All-Solid-State Lithium-Ion Batteries

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Fabrication of Si core/C shell nanofibers and their electrochemical performances as a lithium-ion battery anode

Cited by 139 publications

References 49 publications

Facile method to improve initial reversible capacity of hollow carbon nanofiber anodes

Facile method to improve initial reversible capacity of hollow carbon nanofiber anodes

Epitaxial growth of visible to infra-red transparent conducting In2O3nanodot dispersions and reversible charge storage as a Li-ion battery anode

Nanostructured Si/C Fibers as a Highly Reversible Anode Material for All-Solid-State Lithium-Ion Batteries

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Product

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Epitaxial growth of visible to infra-red transparent conducting In₂O₃nanodot dispersions and reversible charge storage as a Li-ion battery anode