Lithium-Ion-Engineered Interlayers of V2C MXene as Advanced Host for Flexible Sulfur Cathode with Enhanced Rate Performance

Zhuo Chen; Xuebiao Yang; Xue Qiao; Na Zhang; Chunfang Zhang; Zhiling Ma; Hongqiang Wang

doi:10.1021/acs.jpclett.9b03827

Lithium-Ion-Engineered Interlayers of V₂C MXene as Advanced Host for Flexible Sulfur Cathode with Enhanced Rate Performance

Zhuo Chen
, Xuebiao Yang
, Xue Qiao
, Na Zhang
, Chunfang Zhang^*
, Zhiling Ma
, Hongqiang Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

69 Citations (Scopus)

Abstract

A flexible free-standing S@lithium-ion-intercalated V₂C MXene/rGO-CNT (S@V₂C-Li/C) electrode was rationally prepared to address the neglected issue of Li-ion transport for high-rate lithium-sulfur batteries. In this unique nanoarchitecture, rGO and CNTs serve as a flexible skeleton with high conductivity, whereas V₂C-Li MXene plays a vital role in both the chemical absorption of polysulfides and the enhanced transport of lithium ions due to its high polarity and enlarged interlayer distance. Benefiting from the synergistic effect of strong chemical absorption capability and fast lithium-ion migration and exchange, the as-prepared S@V₂C-Li/C electrode demonstrates long-term cycling stability with small capacity decay rates of 0.053 and 0.051% per cycle over 500 cycles at 1 and 2 C, respectively.

Original language	English
Pages (from-to)	885-890
Number of pages	6
Journal	Journal of Physical Chemistry Letters
Volume	11
Issue number	3
DOIs	https://doi.org/10.1021/acs.jpclett.9b03827
Publication status	Published - 6 Feb 2020
Externally published	Yes

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10.1021/acs.jpclett.9b03827

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title = "Lithium-Ion-Engineered Interlayers of V2C MXene as Advanced Host for Flexible Sulfur Cathode with Enhanced Rate Performance",

abstract = "A flexible free-standing S@lithium-ion-intercalated V2C MXene/rGO-CNT (S@V2C-Li/C) electrode was rationally prepared to address the neglected issue of Li-ion transport for high-rate lithium-sulfur batteries. In this unique nanoarchitecture, rGO and CNTs serve as a flexible skeleton with high conductivity, whereas V2C-Li MXene plays a vital role in both the chemical absorption of polysulfides and the enhanced transport of lithium ions due to its high polarity and enlarged interlayer distance. Benefiting from the synergistic effect of strong chemical absorption capability and fast lithium-ion migration and exchange, the as-prepared S@V2C-Li/C electrode demonstrates long-term cycling stability with small capacity decay rates of 0.053 and 0.051\% per cycle over 500 cycles at 1 and 2 C, respectively.",

author = "Zhuo Chen and Xuebiao Yang and Xue Qiao and Na Zhang and Chunfang Zhang and Zhiling Ma and Hongqiang Wang",

note = "Publisher Copyright: Copyright {\textcopyright} 2020 American Chemical Society.",

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doi = "10.1021/acs.jpclett.9b03827",

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AU - Chen, Zhuo

AU - Yang, Xuebiao

AU - Qiao, Xue

AU - Zhang, Na

AU - Zhang, Chunfang

AU - Ma, Zhiling

AU - Wang, Hongqiang

PY - 2020/2/6

Y1 - 2020/2/6

N2 - A flexible free-standing S@lithium-ion-intercalated V2C MXene/rGO-CNT (S@V2C-Li/C) electrode was rationally prepared to address the neglected issue of Li-ion transport for high-rate lithium-sulfur batteries. In this unique nanoarchitecture, rGO and CNTs serve as a flexible skeleton with high conductivity, whereas V2C-Li MXene plays a vital role in both the chemical absorption of polysulfides and the enhanced transport of lithium ions due to its high polarity and enlarged interlayer distance. Benefiting from the synergistic effect of strong chemical absorption capability and fast lithium-ion migration and exchange, the as-prepared S@V2C-Li/C electrode demonstrates long-term cycling stability with small capacity decay rates of 0.053 and 0.051% per cycle over 500 cycles at 1 and 2 C, respectively.

AB - A flexible free-standing S@lithium-ion-intercalated V2C MXene/rGO-CNT (S@V2C-Li/C) electrode was rationally prepared to address the neglected issue of Li-ion transport for high-rate lithium-sulfur batteries. In this unique nanoarchitecture, rGO and CNTs serve as a flexible skeleton with high conductivity, whereas V2C-Li MXene plays a vital role in both the chemical absorption of polysulfides and the enhanced transport of lithium ions due to its high polarity and enlarged interlayer distance. Benefiting from the synergistic effect of strong chemical absorption capability and fast lithium-ion migration and exchange, the as-prepared S@V2C-Li/C electrode demonstrates long-term cycling stability with small capacity decay rates of 0.053 and 0.051% per cycle over 500 cycles at 1 and 2 C, respectively.

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ER -

Lithium-Ion-Engineered Interlayers of V₂C MXene as Advanced Host for Flexible Sulfur Cathode with Enhanced Rate Performance

Abstract

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