| Autor: |
Lu, Bing, Qu, Min, He, Qian, Xie, Zhenyang, Liu, Lihan, Huang, Xun, Li, Jing, Li, Li, Ding, Wei, Wei, Zidong |
| Zdroj: |
Journal of Materials Chemistry A; 5/28/2022, Vol. 10 Issue 20, p10960-10966, 7p |
| Abstrakt: |
We reveal that the oxygen atoms in Sn-based anode materials catalyze de/lithiation in the form of an Li2O intermedium by using a nerve-cell-like anode in an Li-ion battery. The nerve-cell-like anode structure was formed by conductive nitrogen-doped carbon nanofiber linked with carbon-shell-enclosed cages where the active Sn-based materials with tunable oxygen content were isolated for de/lithiation. The Li2O intermedium increased the Li adsorption energy in lithiation, and it amorphized the Li–Sn alloy that accelerates delithiation. As a result, the high rate (dis)charge property with long-term cycle life is achieved in the nerve-cell-like anode, which delivers an outstanding rate capability of 691.9 mA h g−1 at 7 A g−1 and capability of maintaining 842.3 mA h g−1 after 1000 cycles at 2 A g−1. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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