Carbon-encapsulated nanosphere-assembled MoS2 nanosheets with large interlayer distance for flexible lithium-ion batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Zuxue Bai
  • Ya Yang
  • Deyang Zhang
  • Yangbo Wang
  • Ying Guo
  • Hailong Yan
  • Yongsong Luo

Detail(s)

Original languageEnglish
Pages (from-to)1657–1665
Journal / PublicationJournal of Solid State Electrochemistry
Volume25
Issue number5
Online published8 Mar 2021
Publication statusPublished - May 2021

Abstract

2D transition metal dichalcogenides such as MoS2 with the unique layered structure have received great attention in the field of lithium-ion batteries (LIBs). However, the low conductivity and poor structural stability adversely affect the rate performance of LIBs. Herein, a flexible and free-standing high-performance lithium-ion battery electrode (MoS2/C@Ti3C2Tx) composed of rice-candy-like MoS2/C intercalated Ti3C2Tx and PVP-derived carbon with a large interlayer distance of MoS2 is designed and demonstrated. Lithium-ion batteries have attracted great attention due to their high energy density. Consequently, as an anode material for lithium-ion batteries, MoS2/C@Ti3C2Tx provides a high discharge capacity of 538.5 mAh g−1 at 0.05 A g−1 and rapid charge/discharge capability of 256.7 mAh g−1 at 2 A g−1, as well as outstanding cycling property (96.7% capacity retention after 150 cycles at 2 A g−1). Density-functional theory (DFT) calculation reveals that the rice-candy-like MoS2/C structure favors adsorption and diffusion of lithium ions and facilitates the redox reactions. The MoS2/C@Ti3C2Tx structure is expected to boost the development of novel 2D materials for high-performance lithium-ion batteries.

Research Area(s)

  • Flexible electrode, Large interlayer distance, Lithium-ion battery, MoS2, Ti3C2Tx

Citation Format(s)

Carbon-encapsulated nanosphere-assembled MoS2 nanosheets with large interlayer distance for flexible lithium-ion batteries. / Bai, Zuxue; Yang, Ya; Zhang, Deyang; Wang, Yangbo; Guo, Ying; Yan, Hailong; Chu, Paul K.; Luo, Yongsong.

In: Journal of Solid State Electrochemistry, Vol. 25, No. 5, 05.2021, p. 1657–1665.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review