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Preparation and Electrochemical Characterization of Si@C Nanoparticles as an Anode Material for Lithium-Ion Batteries via Solvent-Assisted Wet Coating Process
| Content Provider | MDPI |
|---|---|
| Author | Hwang, Jongha Jung, Mincheol Park, Jin-Ju Kim, Eun-Kyung Lee, Gunoh Lee, Kyung Jin Choi, Jae-Hak Song, Woo-Jin |
| Copyright Year | 2022 |
| Description | Silicon-based electrodes are widely recognized as promising anodes for high-energy-density lithium-ion batteries (LIBs). Silicon is a representative anode material for next-generation LIBs due to its advantages of being an abundant resource and having a high theoretical capacity and a low electrochemical reduction potential. However, its huge volume change during the charge–discharge process and low electrical conductivity can be critical problems in its utilization as a practical anode material. In this study, we solved the problem of the large volume expansion of silicon anodes by using the carbon coating method with a low-cost phenolic resin that can be used to obtain high-performance LIBs. The surrounding carbon layers on the silicon surface were well made from a phenolic resin via a solvent-assisted wet coating process followed by carbonization. Consequently, the electrochemical performance of the carbon-coated silicon anode achieved a high specific capacity (3092 mA h $g^{−1}$) and excellent capacity retention (~100% capacity retention after 50 cycles and even 64% capacity retention after 100 cycles at 0.05 C). This work provides a simple but effective strategy for the improvement of silicon-based anodes for high-performance LIBs. |
| Starting Page | 1649 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano12101649 |
| Journal | Nanomaterials |
| Issue Number | 10 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-12 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Silicon Anode Carbon Coating Lithium-ion Batteries Phenolic Resin |
| Content Type | Text |
| Resource Type | Article |
