| Autor: |
Gao, Yanan, Liu, Jie, Lou, Chenjie, Geng, Hailiang, Fu, Jipeng, Li, Chengyu, Chen, Yongjin, Wang, Cong, Zhang, Wenda, Kuang, Xiaojun, Liu, Yifan, Gao, Xiang, Tang, Mingxue |
| Zdroj: |
Chinese Chemical Letters; December 2023, Vol. 34 Issue: 12 |
| Abstrakt: |
Anode SnO2in lithium-ion batteries suffers from volume expansion and agglomeration. Here, the SnO2nanoparticles are hybrided with ZrO2particles by the support of carbon nanotube networks. The obtained SnO2/C/ZrO2composite shows improved electrochemical performances. Investigations reveal that the carbon nanotubes shorten the transmission path of electrons and Li+ions. Ball milling with ZrO2promotes the formation of nanosized SnO2to weaken the internal strain change, being beneficial to buffering volume change during electrochemical cycling afterwards. High-resolution 6,7Li NMR investigations indicate that conversion and alloying reactions are stepwise involved for SnO2/C/ZrO2anode. The strategy of designing SnO2/C/ZrO2composite from the morphology-controlled metal-organic frameworks for energy storage widens the possibility to fabricate promising materials with enhanced performances. |
| Databáze: |
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