| Autor: |
Bui, Hoa Thi, Jang, Hyungil, Han, Joonghee, Markus, Tjahjono Juan, Sung, MyungMo, Kutwade, Vishnu V., Patil, Supriya A., Shrestha, Nabeen K., Sharma, Ramphal, Han, Sung-Hwan |
| Zdroj: |
Jouranl of Energy Storage; 20230101, Issue: Preprints |
| Abstrakt: |
Since the SSe combination as electrodes in batteries, hybrid composites for lithium sulfur‑selenium (LiS-Se) batteries have attracted substantial attention. In this work, we have synthesized MoSSe- multilayered graphene (MLG) (with two different ratios of S: Se precursor) by solvothermal method followed by the calcination of trapped organic solvent molecules at 800 °C to give graphene multilayer inside the 2D-MoSSe. As synthesized MoSSe-MLG-1 and MoSSe-MLG-2 were characterized by SEM, TEM, X-ray diffraction (XRD), XPS, and Raman techniques. Furthermore, MoSSe-MLG-1 and MoSSe-MLG-2 are attributed to in situgenerated Li2SxSeyactive cathode material for advanced high-performance hybrid LiS-Se battery through the electrochemical lithiation of MoSSe-MLG-1 and MoSSe-MLG-2 structure at voltage down to 0.01 V vsLi+/Li. The ultra-fast reversible specific capacity for LiS-Se hybrid batteries was observed in the rate capability test: the specific capability was 1197mAh/g and recovered 1208mAh/g at current density 0.1A/g for MoSSe-MLG-1. The outstanding specific capacitance was obtained to 206mAh/ g of active material at the super high current density of 20A/g. After the hash rate capability test, the same cell showed a stable performance of 1000 cycles at the current density of 5A/g. There was no capacity fading after the full test with the 1197mAh/g at the current density of 0.1A/g. |
| Databáze: |
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