Conductive Carbon Fibrous Interlayer Embedded with MoS₂@CNT Composites for Mitigating Polysulfide Shuttling by Absorption and Catalysis in Lithium–Sulfur Batteries

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Lithium–sulfur batteries (LSBs) have emerged as promising energy storage systems due to their high density, low cost, and environmental friendliness. However, the "shuttle effect" of lithium polysulfides (LiPSs) leads rapid capacity decay poor cycle stability in LSBs, hindering further development application LSBs. In addition, it is difficult for existing strategies provide effective adsorption catalytic properties while simultaneously ensuring ion transport. To address this issue, a composite film made carbon fibers embedded with MoS2@CNT proposed an interlayer between separator cathode. Results show that such conductive can effectively capture LiPSs catalyze transformation. The as-assembled LSBs deliver initial discharge-specific 1179.03 mAh/g at 0.5 C, 1086.33 remains after 100 cycles. During long-term cycling tests, discharge capacities 463.13 rate per 0.07% 500 cycles 3 representing reduction 0.06% compared commercial (0.13%). This work demonstrates potential independent design fibrous films composites enhancing battery performance. not only efficient network accelerating transport but also suppress shuttle effect transformation LiPSs, boosting electrochemical reaction kinetics.

Language: Английский

Partial boronization of transition metal within double heterostructure nanosheet achieves high-rate and long-cycling lithium-sulfur batteries

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 693, P. 137618 - 137618

Published: April 16, 2025

Language: Английский