About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Functional Nanomaterials: Functional Low-Dimensional (0D, 1D, 2D) Materials 2026
|
| Presentation Title |
MXene-Templated, Redox-Active CeSe₂@TiSe₂–C Separator for Long-Life Lithium–Sulfur Batteries |
| Author(s) |
Amirhossein Mirtaleb, Ruigang Wang |
| On-Site Speaker (Planned) |
Ruigang Wang |
| Abstract Scope |
Lithium-sulfur (Li-S) batteries promise high energy density but suffer from capacity fading and polysulfide shuttle effects that limit practical applications. This work reports multifunctional separators coated with a CeSe₂@TiSe₂-C composite synthesized using a MXene-templated approach. The CeSe₂ component leverages reversible Ce³⁺/Ce⁴⁺ redox activity to immobilize lithium polysulfides, while TiSe₂–C provides conductive pathways that promote sulfur conversion kinetics. At 1 mg cm⁻² sulfur loading, the cells deliver 1650 mAh g⁻¹ at 0.2 C and retain 557 mAh g⁻¹ at 5 C. Under practical conditions (5 mg cm⁻², E/S = 5 µL mg⁻¹), 400 mAh g⁻¹ is maintained after 100 cycles. Impedance spectroscopy confirms reduced charge-transfer resistance and stable cycling. These coated separators offer a scalable strategy to improve Li-S battery performance for next-generation energy storage. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, |