Facile mechanochemical synthesis of non-stoichiometric silica-carbon composite for enhanced lithium storage properties

Zhang, Bo; Wang, Hongwei; Liu, Chang; Li, Dejun; Kim, Hyun Kyung; Harris, Chris; Lao, Cheng‐Yen; Abdelkader, Amr M.; Xi, Kai

doi:10.1016/j.jallcom.2019.06.101

Cited by 14 publications

(4 citation statements)

References 38 publications

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“…With the effect of the high‐speed motor driven grinder in ball milling, the particle size of Si can be significantly reduced and the distribution of Si in matrix is uniform, which make it easier for Li + and interfacial charge to transport. Ultimately, better performance such as enhanced capacity and high capacity retention rate are obtained [21,41,54,65–68] . Combining with etching, ball mill method can also be used to prepare porous Si‐based anode materials.…”

Section: Synthesis Methods Of Silicon/carbon Anodesmentioning

confidence: 99%

“…Ultimately, better performance such as enhanced capacity and high capacity retention rate are obtained. [21,41,54,[65][66][67][68] Combining with etching, ball mill method can also be used to prepare porous Si-based anode materials. Researchers found that the problems of acid consumption and Si yield can be effectively solved by simply changing the sequence of the ball-milling and acid etching.…”

Section: Mechanical Millingmentioning

confidence: 99%

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Research Progress of Silicon/Carbon Anode Materials for Lithium‐Ion Batteries: Structure Design and Synthesis Method

Zhang

Yuan

et al. 2020

ChemElectroChem

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Silicon has been considered as one of the best alternatives to replace widely used graphite anodes for lithium‐ion batteries, owing to its high theoretical capacity, proper working voltage, abundant availability, and environmental friendliness. Nevertheless, there are many obstacles that hamper the practical applications of silicon anode materials such as huge volume change, low electrical and ionic conductivity, and unstable solid electrolyte interface (SEI), which lead to the pulverization of silicon and severe attenuation of capacity. Among numerous solutions, compounding with carbon is a promising and effective one that attracts more and more attention. In silicon/carbon (Si/C) hybrid anodes, Si acts as the active material that provides high capacity and carbon improves the conductivity as well as alleviates the expansion of Si. In this review, research progresses and developments of Si/C anode materials are summarized mainly from the point of structure design and synthesis methods. Issues and possible solutions are also discussed.

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Section: Synthesis Methods Of Silicon/carbon Anodesmentioning

confidence: 99%

Section: Mechanical Millingmentioning

confidence: 99%

Research Progress of Silicon/Carbon Anode Materials for Lithium‐Ion Batteries: Structure Design and Synthesis Method

Zhang

Yuan

et al. 2020

ChemElectroChem

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“…The mechanochemical method, also known as mechanical alloying, is a convenient solid-state processing technique in which the precursor powders are exposed to repeated welding, fracturing, and re-welding in a high energy ball mill. The method has been developed in the 1970s for the fabrication of nickel- and iron-base superalloys for applications in the aerospace industry [ 32 , 33 ] and is nowadays widely used in the processing of advanced materials like alloys [ 34 ], bimetallic nanocatalysts [ 35 ], oxide materials [ 36 , 37 ], carbon-based materials [ 38 , 39 , 40 ], etc. The first reports of mechanochemical synthesis of metal chalcogenides date back to the 1990s, and since then, a number of nanosized sulfides, selenides, and tellurides have been prepared using this method.…”

Section: Introductionmentioning

confidence: 99%

Solvent-Free Mechanochemical Synthesis and Characterization of Nickel Tellurides with Various Stoichiometries: NiTe, NiTe2 and Ni2Te3

et al. 2021

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The paper reports the synthesis of nickel tellurides via a mechanochemical method from elemental precursors. NiTe, NiTe2, and Ni2Te3 were prepared by milling in stainless steel vials under nitrogen, using milling times from 1 h to 12 h. The products were characterized by powder X-ray diffraction (pXRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS), vibrating sample magnetometer (VSM), UV-VIS spectrometry, and thermal analysis (TGA and DSC). The products were obtained in the form of aggregates, several hundreds of nanometers in size, consisting of smaller nanosized crystallites. The magnetic measurements revealed a ferromagnetic behavior at room temperature. The band gap energies calculated using Tauc plots for NiTe, NiTe2, and Ni2Te3 were 3.59, 3.94, and 3.70 eV, respectively. The mechanochemical process has proved to be a simple and successful method for the preparation of binary nickel tellurides, avoiding the use of solvents, toxic precursors, and energy-consuming reaction conditions.

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“…Abbreviations of the vocabulary. References [ 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 ] are cited in the Supplementary Materials.…”

mentioning

confidence: 99%

Simple and Safe Synthesis of Yolk-Shell-Structured Silicon/Carbon Composites with Enhanced Electrochemical Properties

Li,

Wu,

et al. 2024

Molecules

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With its substantial theoretical capacity, silicon (Si) is a prospective anode material for high-energy-density lithium-ion batteries (LIBs). However, the challenges of a substantial volume expansion and inferior conductivity in Si-based anodes restrict the electrochemical stability. To address this, a yolk-shell-structured Si–carbon composite, featuring adjustable void sizes, was synthesized using tin (Sn) as a template. A uniform coating of tin oxide (SnO2) on the surface of nano-Si particles was achieved through a simple annealing process. This approach enables the removal of the template with concentrated hydrochloric acid (HCl) instead of hydrofluoric acid (HF), thereby reducing toxicity and corrosiveness. The conductivity of Si@void@Carbon (Si@void@C) was further enhanced by using a high-conductivity carbon layer derived from pitch. By incorporating an internal void, this yolk-shell structure effectively enhanced the low Li+/electron conductivity and accommodated the large volume change of Si. Si@void@C demonstrated an excellent electrochemical performance, retaining a discharge capacity of 735.3 mAh g−1 after 100 cycles at 1.0 A g−1. Even at a high current density of 2.0 A g−1, Si@void@C still maintained a discharge capacity of 1238.5 mAh g−1.

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Facile mechanochemical synthesis of non-stoichiometric silica-carbon composite for enhanced lithium storage properties

Abstract: Facile mechanochemical synthesis of non-stoichiometric silica-carbon composite for enhanced lithium storage properties,

Cited by 14 publications

References 38 publications

Research Progress of Silicon/Carbon Anode Materials for Lithium‐Ion Batteries: Structure Design and Synthesis Method

Research Progress of Silicon/Carbon Anode Materials for Lithium‐Ion Batteries: Structure Design and Synthesis Method

Solvent-Free Mechanochemical Synthesis and Characterization of Nickel Tellurides with Various Stoichiometries: NiTe, NiTe2 and Ni2Te3

Simple and Safe Synthesis of Yolk-Shell-Structured Silicon/Carbon Composites with Enhanced Electrochemical Properties

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