Challenges and Recent Progress on Silicon‐Based Anode Materials for Next‐Generation Lithium‐Ion Batteries

Zhang, Chengzhi; Wang, Fei; Han, Jianming; Bai, Shuo; Tan, Jinsong; Liu, Jinshui; Li, Feng

doi:10.1002/sstr.202170015

Cited by 91 publications

(51 citation statements)

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“…For instance, B/Al doped silicene has low diffusion barriers and a higher capacity for sodium-ion batteries (SIBs) and potassium-ion batteries (KIBs) in comparison with pristine silicene. 66 Therefore, since good electrical conductivity is one of the requirements for advantageous electrodes, 67 the ABC-Si 4 B 2 and ABC-Si 4 Al 2 metallic trilayer structures are promising candidates for AMIB applications.…”

Section: Discussion and Concluding Remarksmentioning

confidence: 99%

Functionalized few-layer silicene nanosheets: stability, elastic, structural, and electronic properties

Ipaves

Justo

Assali

2022

Phys. Chem. Chem. Phys.

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Section: Discussion and Concluding Remarksmentioning

confidence: 99%

Functionalized few-layer silicene nanosheets: stability, elastic, structural, and electronic properties

Ipaves

Justo

Assali

2022

Phys. Chem. Chem. Phys.

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“…With the consumption of nonrenewable energy, it is urgent and significant to develop a sustainable and diversified energy supply. , Because of its advantages such as high energy density, less self-discharge, and wide temperature range, lithium-ion batteries have gained extensive interest for portable electronic devices, green energy storage, and electric vehicles. − The performance of batteries is greatly affected by electrodes and electrolytes. Among fruitful anode materials, Si is a prospective anode material because of its high theoretical specific capacity (4200 mAh/g for Li 22 Si 5 ) and low-voltage plateau. − The capacity of Si is about 10 times that of current commercial electrodes of graphite. , However, the huge thermal stress of Si induces severe volume expansion (∼400%) and causes devastating problems during lithiation/delithiation processes . The volume expansion of Si leads to cracking of the electrode morphology and rapid capacity fading .…”

Section: Introductionmentioning

confidence: 99%

Decreased Deformation and Heat as well as Improved Interface and Diffusion of Silicon To Enhance Electrochemical Performance and Safety by a Negative Thermal Expansion Material

et al. 2022

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Severe deformation, thermal runaway, and low ionic migration do harm to the applications of silicon. Herein, a negative thermal expansion material of LiTi2(PO4)3 (LTP) with high ionic conductivity was synthesized and utilized to modify nanoscaled Si, and its effects were investigated. Si modified with 3 wt % LTP (SL3) shows the best performance, and its discharge capacities retain 849.4 and 410.9 mAh/g after 100 cycles at 2 A/g as temperatures are 25 and 60 °C, respectively, about 245.4 and 399.9% higher than those of Si. At 60 °C, the diffusion coefficient of lithium ions in Si is increased by 26 times, while the voltage difference between the main redox peaks, charge transfer resistance, and strain of the SL3 are 0.43 V, 171.4 Ω/cm2, and 211 με, respectively, around 15.7, 94.8, and 45.3 lower than those of the Si. The released heat of SL3 is declined to 175.4 J/g, about 85.9% that of the Si. The improvement mechanism of Si by LTP is discussed. It provides a path for enhancing the performance and safety of materials by decreasing heat and deformation hazards, improving the interface, and intensifying transfer.

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“…From the aspect of electrode 9 , the contact between active materials, active material and conductive agent, active material and current collector will become loose and the crack will appear on the surface of the electrode with the progress of the reaction. These phenomena can lead to an increase of internal resistance and a faster approach to the cut-off voltage and hence the capacity cannot perform fully and a severe degradation of cycle performance just happens 10 . Therefore, an effective solution to alleviate the volume change of Si anode during the reaction has to be proposed before its successful commercialization.…”

Section: Introductionmentioning

confidence: 99%

Si-based Composite Anode for Li-ion Batteries with Enhanced Cycle Stability via Doping Cu3Si Phase Achieved by Modified Coating of PDA

Zhang

Liu

Zheng

et al. 2022

Preprint

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Silicon (Si) is a promising anode material for Li-ion batteries but its application is limited due to its severe volume change during the lithiation/delithiation process leading to a fast degradation of cycle performance. Applying transition metals to dope into the bulk of Si forming active/inactive silicide phase is proved an effective and practical method to solve this issue. However, the classic high-energy ball milling method is faced with the challenges of strict requirements to the machine, long-time working and difficulty to control the morphology of the product. Aiming to this point, the present study proposes a facile and “softer” method via coating the polydopamine (PDA) with the assistance of CuCl2·2H2O followed by a high-temperature annealing process to successfully fabricate the Si-based anode material with a unique structure of Si-Cu3Si@C. We firstly achieved the doping of Cu3Si and at the same time coating the carbon layer on the surface of Si. Owing to the synergistic effect of carbonized PDA layer and doped Cu3Si phase, both structural stability and electronic conductivity of electrode have been significantly enhanced. The Si-Cu3Si@C composite anode not only exhibited a high initial reversible capacity of 2356.7 mAh·g-1 with an initial coulombic efficiency of 83.6%, but also demonstrated a good capacity retention of 89.7% after 100 cycles at the current density of 400 mA·g-1. We believe this work can pave a new way to improve the Si-based anode material.

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Challenges and Recent Progress on Silicon‐Based Anode Materials for Next‐Generation Lithium‐Ion Batteries

Cited by 91 publications

References 0 publications

Functionalized few-layer silicene nanosheets: stability, elastic, structural, and electronic properties

Functionalized few-layer silicene nanosheets: stability, elastic, structural, and electronic properties

Decreased Deformation and Heat as well as Improved Interface and Diffusion of Silicon To Enhance Electrochemical Performance and Safety by a Negative Thermal Expansion Material

Si-based Composite Anode for Li-ion Batteries with Enhanced Cycle Stability via Doping Cu3Si Phase Achieved by Modified Coating of PDA

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