| Autor: |
Lu, Wanzheng, Xu, Hui, Wu, Jie, Xue, Mingzhe, Xing, Zhixiang |
| Předmět: |
|
| Zdroj: |
Journal of Materials Engineering & Performance; Nov2024, Vol. 33 Issue 21, p11794-11800, 7p |
| Abstrakt: |
Lithium–sulfur batteries are widely regarded as one of the most promising new types of batteries, and the sulfur-based cathode with high-performance is the key to promoting the success of lithium–sulfur batteries. In this work, the sulfur (S)/activated carbon (AC)/carbon nanotube (CNT) composite cathode materials for lithium–sulfur batteries are prepared by simple mixing and heating fusion. It is observed that the S/AC/CNT composites have obvious structural properties of S and consist of many irregular small-sized particles and some large-sized ellipsoids with rough surfaces. The electrochemical properties of the S/AC/CNT composite cathode are evaluated by matching the lithium metal anode and liquid electrolyte (LE). The cell delivers a high initial discharge capacity of 1077.0 mAh g−1 at 0.1 mA cm−2, and when the current density increases to 0.5 mA cm−2, the cell has a discharge capacity of 712.8 mAh g−1. In addition, the cell can retain the discharge capacities of 437.6 mAh g−1 after 200 cycles and 273.6 mAh g−1 after 500 cycles at 0.5 mA cm-2, showing good cycling stability. This work provides promising S/AC/CNT composite cathode materials with high capacity and good electrochemical stability for lithium–sulfur batteries. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink