Enhanced reversible Li-ion storage in Si@Ti3C2 MXene nanocomposite
| Autor: | Xiaodong He, Dongdong Sun, Yongting Zheng, Qianqian Liu, Yuelei Bai, Fanyu Kong, Xinxin Qi, Rongguo Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanocomposite Silicon chemistry.chemical_element Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Electrical connection 0104 chemical sciences Ion Anode lcsh:Chemistry chemistry Chemical engineering lcsh:Industrial electrochemistry lcsh:QD1-999 0210 nano-technology MXenes lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 97, Iss, Pp 16-21 (2018) |
| ISSN: | 1388-2481 |
| Popis: | The Si@Ti3C2 MXene nanocomposite was prepared in this paper by simply ultrasonic mixing of commercially available nanosized Si and Ti3C2 MXene. The introduction of Ti3C2 makes the aggregation of silicon nanoparticles relieved. Electrochemical measurements show that the nanocomposite maintains a reversible capacity of 188 mAh·g−1 at 0.2 A·g−1 after 150 cycles and exhibits improved capacity retention, which are significantly better than those of pure Si. The enhanced cycling stability and rate capability are attributed to the good electrical connection between silicon and Ti3C2. This study provides a new available matrix and guidance for the applications of MXenes in Si-based anode LIBs. Keywords: Silicon, Si@Ti3C2 nanocomposite, MXene, Li-ion batteries |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect