Electrospun Ti3C2 MXene Fiber‐Decorated Interlayer for Synchronous Sulfur Activation and Lithium Stabilization DOI Open Access
Bo Zhao, Lixian Song,

Zhijuan Zou

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 16, 2025

Abstract Concurrent regulation of sulfur redox kinetics and lithium deposition homogeneity is a key prerequisite for achieving high‐performance lithium–sulfur (Li–S) batteries. To this end, rational design dual‐functional interlayers recognized as feasible yet promising approach. Herein, few‐layered Ti 3 C 2 MXene flakes are uniformly decorated into the porous carbon nanofiber film via straightforward electrostatic spinning technique, wherein content fine‐tuned to maximum utilization stabilize anode. For one thing, it revealed by synchrotron radiation X‐ray three‐dimensional nano‐computed tomography that MXene‐decorated fiber can expedite polysulfide conversion induce favorable Li S nucleation. another, small‐angle neutron scattering evidence substantiates abundant lithiophilic sites conducive homogenizing Li‐ion flux promoting during cycling procedure. As consequence, Li–S batteries maintain stable operation at 2.0 over 1000 cycles with low‐capacity degeneration rate 0.057% per cycle, accompanied superior areal capacity 7.5 mAh cm −2 when loading increased 9.5 mg . More encouragingly, as‐assembled multi‐layer pouch cell deliver an impressive energy density 342.3 Wh kg −1 smooth cyclic operation.

Language: Английский

Electrospun Ti3C2 MXene Fiber‐Decorated Interlayer for Synchronous Sulfur Activation and Lithium Stabilization DOI Open Access
Bo Zhao, Lixian Song,

Zhijuan Zou

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 16, 2025

Abstract Concurrent regulation of sulfur redox kinetics and lithium deposition homogeneity is a key prerequisite for achieving high‐performance lithium–sulfur (Li–S) batteries. To this end, rational design dual‐functional interlayers recognized as feasible yet promising approach. Herein, few‐layered Ti 3 C 2 MXene flakes are uniformly decorated into the porous carbon nanofiber film via straightforward electrostatic spinning technique, wherein content fine‐tuned to maximum utilization stabilize anode. For one thing, it revealed by synchrotron radiation X‐ray three‐dimensional nano‐computed tomography that MXene‐decorated fiber can expedite polysulfide conversion induce favorable Li S nucleation. another, small‐angle neutron scattering evidence substantiates abundant lithiophilic sites conducive homogenizing Li‐ion flux promoting during cycling procedure. As consequence, Li–S batteries maintain stable operation at 2.0 over 1000 cycles with low‐capacity degeneration rate 0.057% per cycle, accompanied superior areal capacity 7.5 mAh cm −2 when loading increased 9.5 mg . More encouragingly, as‐assembled multi‐layer pouch cell deliver an impressive energy density 342.3 Wh kg −1 smooth cyclic operation.

Language: Английский

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