Preparation of a Silicon/MXene Composite Electrode by a High-Pressure Forming Method and Its Application in Li<sup>+</sup>-Ion Storage
The main component of high-capacity silicon-based electrodes is silicon powder, which necessitates intricate processing to minimize volume growth and powder separation while guaranteeing the ideal Si content. This work uses the an situ high-pressure forming approach to create an MXene/<i>m<...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/30/2/297 |
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| Summary: | The main component of high-capacity silicon-based electrodes is silicon powder, which necessitates intricate processing to minimize volume growth and powder separation while guaranteeing the ideal Si content. This work uses the an situ high-pressure forming approach to create an MXene/<i>m</i>-Si/MXene composite electrode, where MXene refers to Ti<sub>3</sub>C<sub>2</sub>T<sub>X</sub>, and <i>m</i>-Si denotes two-phase mixed nano-Si particles. The sandwich shape promotes silicon’s volume growth and stops active particles from spreading. The conductive structure of Ti<sub>3</sub>C<sub>2</sub>T<sub>X</sub> MXene increases the efficiency of charge transfer while reducing internal resistance. After 100 cycles, the composite electrode’s original capacity of 1310.9 mAh g<sup>−1</sup> at a current density of 0.5 A g<sup>−1</sup> is maintained at 781.0 mAh g<sup>−1</sup>. These findings lay the foundation for further investigations into Si matrix composite electrodes. |
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| ISSN: | 1420-3049 |