Effects of LiCl template amount on structure, morphology, and electrochemical performance of porous Si@C anodes

Porous silicon carbon (Si@C) has been regarded as a promising candidate to overcome volume change of silicon-based anodes. However, the relationship between pore size distribution and properties of porous Si@C materials is not clear. Herein, porous materials with different pore size structures are s...

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Bibliographic Details
Published in:Ionics 2022-06, Vol.28 (6), p.2635-2648
Main Authors: Dong, Hong, Ding, Hao, Zhang, Ningshuang, Wang, Jie, Linhu, Song, Wang, Peng, Song, Ru, Sun, Yongkun, Li, Shiyou
Format: Article
Language:English
Subjects:
Additives
Anodes
Carbon
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Density functional theory
Electrochemical analysis
Electrochemistry
Energy Storage
Material properties
Optical and Electronic Materials
Original Paper
Pore size
Pore size distribution
Porous materials
Porous silicon
Renewable and Green Energy
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Summary:Porous silicon carbon (Si@C) has been regarded as a promising candidate to overcome volume change of silicon-based anodes. However, the relationship between pore size distribution and properties of porous Si@C materials is not clear. Herein, porous materials with different pore size structures are synthesized by adjusting the proportion of LiCl additives in the template, which is used to study the effect of pore size distribution on the properties of batteries. The results show that the porous Si@C prepared with the content of 10% LiCl templates has the perfect electrochemical comprehensive performance. In addition, we have utilized the density functional theory (DFT) calculation methods to further study the effect of carbon defects on the material properties. Graphical abstract
ISSN:0947-7047
1862-0760
DOI:10.1007/s11581-022-04526-2