Facile Synthesis of Sponge-Like Porous Nano Carbon-Coated Silicon Anode with Tunable Pore Structure for High-Stability Lithium-Ion Batteries

Song, Shugui; Li, Jingcang; Zheng, Anqi; Yang, Yongqiang; Yin, Kuibo

doi:10.3390/molecules26113211

Cited by 4 publications

(2 citation statements)

References 45 publications

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“…(c) Schematic illustration of the preparation processes of Si@NC. (d) Comparison of the electrochemical performance for Si@NC in this work and previously reported Si-based anodes with a single-layer or multilayer carbon coating for LIBs. ,,− …”

Section: Introductionmentioning

confidence: 88%

Si@Nitrogen-Doped Carbon Nanoparticles for Lithium-Ion Battery Anodes

Huang,

Gao,

Miao

et al. 2024

ACS Appl. Nano Mater.

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The formation of a core−shell structure by coating silicon (Si) nanoparticles with a carbon layer is considered a promising method to address the poor conductivity of a Si-based anode and volume expansion of silicon particles during the charging/discharging process. However, Si/C composite anodes usually perform below expectations with a single layer of carbon utilized as the coating layer, while introducing multilayer carbon coating results in the additional complexity and cost. To overcome this challenge, in this work, waterborne polyurethane (WPU) had been simply mixed with the Si nanoparticles to form the Si/WPU composite via the hydrogen bonds, and the core−shell structure with the single carbon layer containing N atoms (Si@NC) was obtained after the pyrolysis of the composite. The carbon layer not only significantly alleviated the breakage of the anode caused by the volume expansion of Si nanoparticles but also optimized the rate performance of the anode. At a current density of 0.5 A g −1 , the discharge specific capacity of the Si@NC anode is still as high as 945.63 mAh g −1 after 300 cycles, surpassing various single-layer carbon and multilayer carbon-coated Si-based anodes. This work provides a convenient and feasible method for preparing economical Si/C composite anode materials.

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Section: Introductionmentioning

confidence: 88%

Si@Nitrogen-Doped Carbon Nanoparticles for Lithium-Ion Battery Anodes

Huang,

Gao,

Miao

et al. 2024

ACS Appl. Nano Mater.

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“…Different coating structures have been designed to obtain high-performance silicon anodes. Song et al [59] prepared a controllable spongy porous nanocarbon-coated silicon (sCCSi). The structure of the sponge porous coating can be adjusted based on the stirring temperature and pre-oxidation heating rate of the precursor, and a suitable sponge porous structure can greatly improve the conductivity.…”

Section: Coating Structurementioning

confidence: 99%

Research Progress on the Structural Design and Optimization of Silicon Anodes for Lithium-Ion Batteries: A Mini-Review

Yu,

Cui,

Zhong

et al. 2023

Coatings

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Silicon anodes have been considered one of the most promising anode candidates for the next generation of high-energy density lithium-ion batteries due to the high theoretical specific capacity (4200 mAh g−1) of Si. However, high lithiation capacity endows silicon anodes with severe volume expansion effects during the charge/discharge cycling. The repeated volume expansions not only lead to the pulverization of silicon particles and the separation of electrode materials from the current collector, but also bring rupture/formation of solid electrolyte interface (SEI) and continuous electrolyte consumption, which seriously hinders the commercial application of silicon anodes. Structural design and optimization are the key to improving the electrochemical performances of silicon anodes, which has attracted wide attention and research in recent years. This paper mainly summarizes and compares the latest research progress for the structural design and optimization of silicon anodes.

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