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author:

Wu, Chenghao (Wu, Chenghao.) [1] | Ou, Jian Zhen (Ou, Jian Zhen.) [2] | He, Fengyi (He, Fengyi.) [3] | Ding, Jianfeng (Ding, Jianfeng.) [4] | Luo, Wei (Luo, Wei.) [5] | Wu, Minghong (Wu, Minghong.) [6] (Scholars:吴明红) | Zhang, Haijiao (Zhang, Haijiao.) [7]

Indexed by:

SCIE

Abstract:

Hybrid MoS2/C nanostructures have shown great promise as an ideal anode for lithium-ion batteries (LIBs) owing to the improved conductivity and electrochemical performance. Nevertheless, if only one side of MoS2 particles is covered by conductive carbon layer, other exposed side is still low conductivity. Meanwhile, the structure of electrodes is relatively not robust. Herein, an effective structural engineering strategy has been proposed for achieving a new type of polypyrrole-derived carbon nanotubes@MoS2@carbon (PCN@MoS2@C) sandwiched architecture via a facile one-pot hydrothermal process. When utilized as anodes for lithium storage, the resulting MoS2/C hybrid exhibits a large specific capacity of 1079 mA h g(-1) at 0.1 A g(-1) and high coulombic efficiency of above 99.0% over 200 cycles, showing a superior cycling stability and reversibility. The density functional theory (DFT) calculations further demonstrate that ultrathin MoS2 nanosheets with an expanded interlayer distance of 0.98 nm have more accessible space, lower transfer resistance, and faster diffusion kinetics of Li ions. The great improvement in electrochemical properties is mainly ascribed to the design of peculiar hybrid architecture, and the collaborative effect between active MoS2 nanosheets and two different conductive carbon layers. This work sheds a new light on the rational design of advanced electrode materials with boosted performance and stable structural stability.

Keyword:

Expanded interlayer spacing Lithium-ion batteries MoS2 nanosheets Nitrogen doping Sandwiched architecture

Community:

  • [ 1 ] [Wu, Chenghao]Shanghai Univ, Inst Nanochem & Nanobiol, Shanghai 200444, Peoples R China
  • [ 2 ] [He, Fengyi]Shanghai Univ, Inst Nanochem & Nanobiol, Shanghai 200444, Peoples R China
  • [ 3 ] [Ding, Jianfeng]Shanghai Univ, Inst Nanochem & Nanobiol, Shanghai 200444, Peoples R China
  • [ 4 ] [Zhang, Haijiao]Shanghai Univ, Inst Nanochem & Nanobiol, Shanghai 200444, Peoples R China
  • [ 5 ] [Wu, Minghong]Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
  • [ 6 ] [Luo, Wei]Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
  • [ 7 ] [Ou, Jian Zhen]RMIT Univ, Sch Engn, Melbourne, Vic 3000, Australia

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Source :

NANO ENERGY

ISSN: 2211-2855

Year: 2019

Volume: 65

1 6 . 6 0 2

JCR@2019

1 6 . 8 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 78

SCOPUS Cited Count: 80

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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