Effect of dual local structures of amorphous Fe–Si films on the performance of anode of lithium-ion batteries

Li, Xiaona; Zheng, Yuehong; Li, Zhumin; Liu, Yubo; Huang, Hao; Wang, Qing; Chen, Dong

doi:10.1016/j.matchemphys.2020.122666

Cited by 11 publications

(5 citation statements)

References 50 publications

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“…[109] More importantly, FeÀ Si alloy can ensure the mechanical integrity of the silicon-based anodes. [110] Generally, FeÀ Si alloy consists of Si and FeSi 2 . The inert FeSi 2 is usually adopted as a buffering matrix to accommodate the volume expansion of silicon-based anodes, thereby suppressing morphological degradation.…”

Section: Si-based Alloy Nanoparticlesmentioning

confidence: 99%

Microstructure Engineered Silicon Alloy Anodes for Lithium‐Ion Batteries: Advances and Challenges

Zheng

Sun

Liu

et al. 2022

Batteries & Supercaps

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Due to the high theoretical lithium storage capacity and moderate voltage platform, silicon is expected to substitute graphite and serves as the most promising anode material for lithium-ion batteries (LIBs). However, substantial volume change during cycling subjects the silicon anode to electrode pulverization and conductive network damage, extensively limiting its commercial purpose. Strategies, such as alloying, nano-crystallization, and compositing, are developed against these problems. This review introduces the attractive alloying modification method and summarizes the recent advances in microstructureengineered silicon alloy anodes for LIBs. The electrochemical performances of silicon alloy anodes with various morphologies, such as nanoparticles, nanowires, two-dimensional layered structures, porous structures, and thin films, are discussed in detail. The challenges for the commercial application of silicon alloy anodes are elaborated in the end. This review provides a comprehensive overview and concerns of microstructure-engineered silicon alloy anodes for potential applications in LIBs.

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Section: Si-based Alloy Nanoparticlesmentioning

confidence: 99%

Microstructure Engineered Silicon Alloy Anodes for Lithium‐Ion Batteries: Advances and Challenges

Zheng

Sun

Liu

et al. 2022

Batteries & Supercaps

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“…For this reason, active/inactive Fe–Si alloys that have been produced in various ways for their advantageous properties, such as high electronic conductivity that can significantly improve the electrochemical performance of Si-based materials, have been studied in the past few decades [ 19 , 20 , 21 , 22 ]. Among these processes, the mechanical alloying process can form an alloy with a high melting point compound by repeating the process of combining different types of metal powders and crushing them using the mechanical impact from the ball mill.…”

Section: Introductionmentioning

confidence: 99%

Properties of Fe–Si Alloy Anode for Lithium-Ion Battery Synthesized Using Mechanical Milling

Lee

Jeong

Chu³

et al. 2022

Materials

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Silicon (Si)-based anode materials can increase the energy density of lithium (Li)-ion batteries owing to the high weight and volume capacity of Si. However, their electrochemical properties rapidly deteriorate due to large volume changes in the electrode resulting from repeated charging and discharging. In this study, we manufactured structurally stable Fe–Si alloy powders by performing high-energy milling for up to 24 h through the reduction of the Si phase size and the formation of the α-FeSi2 phase. The cause behind the deterioration of the electrochemical properties of the Fe–Si alloy powder produced by over-milling (milling for an increased time) was investigated. The 12 h milled Fe–Si alloy powder showed the best electrochemical properties. Through the microstructural analysis of the Fe–Si alloy powders after the evaluation of half/full coin cells, powder resistance tests, and charge/discharge cycles, it was found that this was due to the low electrical conductivity and durability of β-FeSi2. The findings provide insight into the possible improvements in battery performance through the commercialization of Fe–Si alloy powders produced by over-milling in a mechanical alloying process.

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“…The results revealed that Fe exhibited excellent deformation tolerance, while Ni contributed to enhanced strength and ductility, effectively mitigating Si pulverization. As an example, Li et al 103 prepared amorphous Fe−Si films directly on copper foil using a magnetron sputtering system and investigated the effects of semiconductor properties and different local structures on the electrochemical properties by adjusting the Fe content. 103 Besides, the electrochemical performance of Fe−Si can be further improved by doping with C. Kwon et al 104 found that Fe 10 Si 90 had stable performance and proposed a Si-FeSi 2 -G-C composite.…”

mentioning

confidence: 99%

“…As an example, Li et al 103 prepared amorphous Fe−Si films directly on copper foil using a magnetron sputtering system and investigated the effects of semiconductor properties and different local structures on the electrochemical properties by adjusting the Fe content. 103 Besides, the electrochemical performance of Fe−Si can be further improved by doping with C. Kwon et al 104 found that Fe 10 Si 90 had stable performance and proposed a Si-FeSi 2 -G-C composite. After mixing Fe, Si, and graphite by high-energy ball milling (HEBM) and heat treatment (HT) to form FeSi 2 @graphite, the carbon-coated Si-FeSi 2 -G composite was further graded by pyrolysis with polyvinyl chloride (PVC).…”

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confidence: 99%

Si-based Anode Lithium-Ion Batteries: A Comprehensive Review of Recent Progress

Li,

Chai

et al. 2023

ACS Materials Lett.

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Si-based anode materials offer significant advantages, such as high specific capacity, low voltage platform, environmental friendliness, and abundant resources, making them highly promising candidates to replace graphite anodes in the next generation of high specific energy lithium-ion batteries (LIBs). However, the commercialization of Si-based anodes for LIBs encounters significant barriers due to inherent challenges. These challenges encompass a range of issues, including poor electrical conductivity, substantial volume expansion during the lithiation−delithiation process, severe pulverization of the electrodes, pronounced thickening of the solid electrolyte interphase film, low Coulombic efficiency, and limited cycling performance. Each of these factors leads to the complexity of realizing the full potential of Si-based anodes in commercial LIBs applications. This review provides a comprehensive summary and discussion of recent research on Si-based LIB anodes, focusing on the microscopic morphology of Si and the development of Si-based composite materials. By offering a novel perspective, this review aims to provide an overview and insightful discussion of Sibased anodes. The latest research findings are presented, and innovative viewpoints and reasonable insights are addressed, shedding light on the potential solutions to overcome the limitations associated with Si-based anodes.

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Effect of dual local structures of amorphous Fe–Si films on the performance of anode of lithium-ion batteries

Cited by 11 publications

References 50 publications

Microstructure Engineered Silicon Alloy Anodes for Lithium‐Ion Batteries: Advances and Challenges

Microstructure Engineered Silicon Alloy Anodes for Lithium‐Ion Batteries: Advances and Challenges

Properties of Fe–Si Alloy Anode for Lithium-Ion Battery Synthesized Using Mechanical Milling

Si-based Anode Lithium-Ion Batteries: A Comprehensive Review of Recent Progress

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