<i>In Situ</i> Construction of S-Based Artificial Solid Electrolyte Interphases Layer for Stable Silicon Anode in Lithium-Ion Batteries

Chen, Wei‐Lun; Chen, Kongyao; Zeng, Rui; Wan, Min; Guo, Yixuan; Liao, Yaqi; Peng, Jiayu; Zhang, Wuxing; Huang, Yangyang

doi:10.1021/acsaem.2c02676

Cited by 5 publications

(2 citation statements)

References 46 publications

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“…With so many factors to consider, there are few options to further develop a tailored electrolyte for Si-based LIBs. According to previous reports, , the stability of the SEI layer determines the cycle life of the Si anode, and works − tailoring artificial SEI for the Si anode have successfully prolonged the life span of the Si anode, which further highlights the importance of the SEI layer. Although calculations confirm that the solvent decomposition path and products are dependent on the electrode surfaces, , few studies investigate strategies that regulate the SEI layer composition via a simple interfacial chemistry design to improve the interface stability.…”

Section: Introductionmentioning

confidence: 83%

Surface Chemistry-Controlled SEI Layer on Silicon Electrodes by Regulating Electrolyte Decomposition

Fang

et al. 2023

ACS Appl. Mater. Interfaces

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Unstable solid electrolyte interface (SEI) layers induced by significant volume changes and subsequent side reactions at the interface have prevented Si anodes from practical application in lithium-ion batteries. The interface stability plays an important role in the electrochemical performance of Si electrodes. Here, we modify the interface of a Si electrode with ion-conductive poly(ethylene glycol) diglycidyl ether (PEGDE), which controls the electrolyte decomposition route and stabilizes the SEI layer. It enables the Si electrode to achieve a capacity of more than 1800 mAh g −1 at a current density of 2 A g −1 , with a capacity retention of 77.25% after 300 cycles. The PEGDE-decorated Si electrode also shows greatly improved rate capability, with specific capacity up to 777 mAh g −1 even at 20 A g −1 . We demonstrate that PEGDE decoration greatly increases the Li 2 CO 3 ratio in the SEI layer, which improves the interface stability and Li + conductivity and hence suppresses continuous electrolyte decomposition. As a result, the structural integrity of the Si particles is maintained and capacity fading is retarded. This work reveals that surface design can effectively regulate the SEI layer composition and improve interface stability, which is a promising strategy for Si-electrode manufacture.

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Section: Introductionmentioning

confidence: 83%

Surface Chemistry-Controlled SEI Layer on Silicon Electrodes by Regulating Electrolyte Decomposition

Fang

et al. 2023

ACS Appl. Mater. Interfaces

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“…Chen et al [89] prepared S-containing artificial SEI by nucleophilic reaction of sulfide and ester-based electrolyte (Si@S-ARSEI). The results show that the S-ARSEI layer can effectively inhibit the decomposition of the electrolyte.…”

Section: Artificial Seimentioning

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

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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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Recent advances in interface engineering of silicon anodes for enhanced lithium-ion battery performance

Wang,

Yu,

et al. 2024

Energy Storage Materials

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In Situ Construction of S-Based Artificial Solid Electrolyte Interphases Layer for Stable Silicon Anode in Lithium-Ion Batteries

Cited by 5 publications

References 46 publications

Surface Chemistry-Controlled SEI Layer on Silicon Electrodes by Regulating Electrolyte Decomposition

Surface Chemistry-Controlled SEI Layer on Silicon Electrodes by Regulating Electrolyte Decomposition

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

Recent advances in interface engineering of silicon anodes for enhanced lithium-ion battery performance

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