| Autor: |
Ji, Yu-Rui, Qi, Si-Yu, Wang, Jian-Cang, Wang, Peng-Fei, Ren, Ning, Yi, Ting-Feng |
| Předmět: |
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| Zdroj: |
Journal of Industrial & Engineering Chemistry; Apr2023, Vol. 120, p340-348, 9p |
| Abstrakt: |
[Display omitted] Transition metal oxides are deemed as a promising substitute for graphite anode materials of Li-ion batteries (LIBs) on account of their large specific capacity. Nonetheless, the large volume change in the process of charging and discharging leads to low capacity retention. Herein, a well-designed ZnCo 2 O 4 @coal tar pitch based porous carbon (ZCO-CTP) microsphere is prepared to construct the high-performance anode of LIBs. The coating modification of CTP significantly reduces the polarization and charge transfer resistance and improves the migration ability of ions and electrons, thus achieving a superior reversible capacity and cycling stability of ZCO-CTP anode. The battery with obtained ZCO-CTP5 provides a large charge capacity of 406.17 mAh/g at 1000 mA g−1 compared with pristine ZCO (only 157.78 mAh/g). Even after 1000 cycles at 1000 mA g−1, the battery can achieve a charge/discharge capacity of 598.46/601.17 mAh/g. We believe that the application of CTP will provide a new perspective for the exploitation of high-performance anode materials for LIBs. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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