Carbon-coated nitrogen doped SiOx anode material for high stability lithium ion batteries

Jin, Congrui; Dan, Jianglei; Zou, Yue; Xu, Guojun; Yue, Zhihao; Li, Xiaomin; Sun, Fugen; Zhou, Lang; Wang, Li

doi:10.1016/j.ceramint.2021.07.112

Cited by 20 publications

(7 citation statements)

References 25 publications

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“…It is noteworthy to consider how the improved cyclability of the anode is often a consequence of a stronger binding network that can suppress volume expansion and the consequent anode failure. However, the results observed for nitrogen doping suggest that an increased lithium-ion diffusion rate may have positive effects on the cyclability of the anode material, because this allows for a more uniform volume expansion. Therefore, homogeneity in volume expansion and structural homogeneity as well as a high lithium-ion diffusion rate are fundamental to improving the capacity retention in doped anode materials.…”

Section: Sio X Heteroatom Addition Designmentioning

confidence: 99%

“…It also showed an initial discharge capacity of 2860.3 mAh/g while retaining a capacity of 1389.8 mAh/g. Jin et al 48 identified carbon-coated N-doped silica anodes as an environmentally friendly alternative to phosphorus doping. In fact, in addition to the increase in electron conductivity caused by the increased number of free electrons, N-doped silica also showed increased lithium-ion diffusivity.…”

Section: Faster Ion Diffusion Ratementioning

confidence: 99%

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Review on Improving the Performance of SiO_x Anodes for a Lithium-Ion Battery through Insertion of Heteroatoms: State of the Art and Outlook

Kim,

Li,

Gervasone

et al. 2023

Energy Fuels

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Anode materials for Li-ion batteries have attracted significant research interest owing to the growing demand for efficient and cost-effective energy storage systems. Among the various anode materials being studied, silicon-based anodes have garnered considerable attention as a result of their potential to overcome many of the limitations associated with graphite anodes. However, silicon-based anodes undergo high volumetric expansion during cycling, which results in anode failure. In contrast, silicon-oxide-based (SiO x ) materials exhibit limited volumetric expansion, making them viable candidates as anode materials in lithium-ion batteries. Despite this, there remain several challenges associated with SiO x anodes, including volumetric expansion (160−200%), poor capacity retention, and low initial coulombic efficiency. To address these issues, the incorporation of heteroatoms into SiO x anodes has been proposed as a promising strategy. In this review, we aim to provide an overview of the current state of research on SiO x anodes, including experiments and theoretical calculations, with a focus on the insertion of heteroatoms to improve the anode performance. In particular, we examine the effects of heteroatom incorporation on the anode conductivity, lithium diffusion, durability, and initial coulombic efficiency. In addition, we present a design strategy for the insertion of heteroatoms into the SiO x anodes. This review aims to provide a comprehensive understanding of the role of heteroatoms in SiO x anodes and highlight the potential for further research in this area.

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Section: Sio X Heteroatom Addition Designmentioning

confidence: 99%

Section: Faster Ion Diffusion Ratementioning

confidence: 99%

Review on Improving the Performance of SiO_x Anodes for a Lithium-Ion Battery through Insertion of Heteroatoms: State of the Art and Outlook

Kim,

Li,

Gervasone

et al. 2023

Energy Fuels

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“…24 Jin et al synthesized N-doped SiO x using ammonium sulfate as the N source through multistep liquid-phase mixing. 25 Hsieh and Liu obtained Ndoped Si/C composites using hexamethylene tetramine as the N source through liquid-phase blending and high-temperature treatment. 26 By nitriding Mg 2 Si, Han et al obtained N-doped silicon.…”

Section: Introductionmentioning

confidence: 99%

“…Qu et al prepared N-doped silicon composites by ball milling and vacuum heat treatment with LiNH 2 as the N source . Jin et al synthesized N-doped SiO x using ammonium sulfate as the N source through multistep liquid-phase mixing . Hsieh and Liu obtained N-doped Si/C composites using hexamethylene tetramine as the N source through liquid-phase blending and high-temperature treatment .…”

Section: Introductionmentioning

confidence: 99%

Highly Conductive Ultrafine N-Doped Silicon Powders Prepared by High-Frequency Thermal Plasma and Their Application as Anodes for Lithium-Ion Batteries

Dong,

Liu,

et al. 2023

ACS Appl. Electron. Mater.

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Silicon materials are widely regarded as highly promising candidate anodes for the next generation of lithium-ion batteries. However, the violent volume expansion and low intrinsic conductivity hinder their practical application. In this study, ultrafine N-doped silicon powders (N-doped Si) were prepared by using high-frequency thermal plasma (HF-plasma) technology, in which nanocrystallization and N doping were conducted in a single step without the formation of the Si 3 N 4 phase. Through characterization of X-ray photoelectron spectroscopy, X-ray diffraction, and Raman analysis, it is ascertained that N is doped in silicon after HF-plasma treatment. According to the UV−vis and conductivity tests, N-doped Si has a notably narrower bandgap and a higher conductivity than those of undoped Si. N-doped Si with a submicrosphere (N−Si-0.5) delivered a reversible capacity of 974.1 mA h g −1 at 0.2 A g −1 after 50 cycles and an initial Coulombic efficiency (ICE) of 88.72%. Even at 6 A g −1 , N−Si-0.5 can still exhibit a high reversible capacity of 200.5 mA h g −1 , while Si without doping (N−Si-0.0) only gives a reversible capacity of 526.8 mA h g −1 at 0.2 A g −1 after 50 cycles with an ICE of 85.81% and an unnoticeable capacity at 6 A g −1 . It is clear that Si shows higher ICE, better cycle stability, and rate performance. For further enhancement of the electrochemical performances of N-doped Si, the Si nanowires (NW-Si) were prepared. Experimental results showed that the initial capacity, ICE, and rate performance all gradually improved as the N 2 flow rate increased. NW-Si-1.0 has an initial capacity of 2725.7 mA h g −1 and an ICE of 80.18%. Even at 6 A g −1 , it can provide a reversible capacity of 584.7 mA h g −1 . The enhanced electrochemical performances of N-doped Si can be ascribed to the introduction of the N dopant and nanowire, which raised carrier concentration, accelerated electron transfer, and alleviated volume expansion.

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“…[31,32] Hence, on the basis of improving the electronic/ionic conductivity, further constructing an efficient and stable interface is vital to promote the application of SiO x materials. [33] Fast ionic conductors, such as LiBO 2 , Li 3 BO 3, and Li 3 PO 4 , play a positive role in maintaining high electrical conductivity. [18,[34][35][36] Moreover, Li 3 BO 3 is capable of forming a contact interface between the material and SEI film, thus improving the interface effect.…”

Section: Introductionmentioning

confidence: 99%

Carbon and Li₃BO₃ Co‐Modified SiO_x as Anode for High‐Performance Lithium‐Ion Batteries

Song

Cai

et al. 2023

Energy Tech

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SiOx‐based anode material has emerged as one of the most promising candidates for graphite. However, poor electronic conductivity and relatively large volume effect hinder its practical application as anode lithium‐ion batteries (LIBs). Herein, a co‐modification approach using carbon and lithium borate hybrid coating simultaneously, is introduced to rationally exploit and improve the electronic and ionic conductivity of SiOx. When applied as anodes for LIBs, the SiOx@C@Li3BO3 sample exhibits superior cycling performance (81% capacity retention after 500 cycles at 1 A g−1). The enhanced electrochemical performance can be ascribed to the synergetic contribution of carbon and Li3BO3, which effectively accommodates the large volume change and improves the interfacial stability of SiOx@C@Li3BO3 during the lithiation/delithiation process. Herein, a versatile design strategy for alloy‐type anode materials is furnished.

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Carbon-coated nitrogen doped SiOx anode material for high stability lithium ion batteries

Cited by 20 publications

References 25 publications

Review on Improving the Performance of SiO_x Anodes for a Lithium-Ion Battery through Insertion of Heteroatoms: State of the Art and Outlook

Review on Improving the Performance of SiO_x Anodes for a Lithium-Ion Battery through Insertion of Heteroatoms: State of the Art and Outlook

Highly Conductive Ultrafine N-Doped Silicon Powders Prepared by High-Frequency Thermal Plasma and Their Application as Anodes for Lithium-Ion Batteries

Carbon and Li₃BO₃ Co‐Modified SiO_x as Anode for High‐Performance Lithium‐Ion Batteries

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Carbon-coated nitrogen doped SiOx anode material for high stability lithium ion batteries

Cited by 20 publications

References 25 publications

Review on Improving the Performance of SiOx Anodes for a Lithium-Ion Battery through Insertion of Heteroatoms: State of the Art and Outlook

Review on Improving the Performance of SiOx Anodes for a Lithium-Ion Battery through Insertion of Heteroatoms: State of the Art and Outlook

Highly Conductive Ultrafine N-Doped Silicon Powders Prepared by High-Frequency Thermal Plasma and Their Application as Anodes for Lithium-Ion Batteries

Carbon and Li3BO3 Co‐Modified SiOx as Anode for High‐Performance Lithium‐Ion Batteries

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Product

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Review on Improving the Performance of SiO_x Anodes for a Lithium-Ion Battery through Insertion of Heteroatoms: State of the Art and Outlook

Review on Improving the Performance of SiO_x Anodes for a Lithium-Ion Battery through Insertion of Heteroatoms: State of the Art and Outlook

Carbon and Li₃BO₃ Co‐Modified SiO_x as Anode for High‐Performance Lithium‐Ion Batteries