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[期刊]

Ethylene glycol solvent induced expansion of interplanar spacing and 2H-1T phase transformation of molybdenum disulfide nanocomposites for enhanced lithium storage capability

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Author:

Zong, Jingui (Zong, Jingui.) | Wang, Fei (Wang, Fei.) | Liu, Guannan (Liu, Guannan.) | Unfold

Indexed by:

SCIE EI Scopus

Abstract:

Molybdenum disulfide (MoS2), has aroused people's much research interest as an anode candidate for next generation of Li-ion batteries because of special layered structure and high theoretical capacity. However, MoS2 suffers from a poor cycling stability and an inferior rate capability upon charge/discharge processes. So we have successfully synthesized a more stable expanded nanocomposite with superior electrical conductivity by intercalating moderate amorphous carbon between two adjacent S-Mo-S interlayer via a simple method which exhibits excellent lithium storage performance with high capacity (858.9 mA h g(-1) at 1 A g(-1) for 1000 cycles), and superior rate capability (518 mA h g(-1) at 4 A g(-1)). This superior electrochemical performance is attributed to the special structure (few layers, 2H phase, expanded interlayer spacing, amorphous carbon between S-Mo-S layers, C-O-Mo bond in the layer), small size and evenly distributed MoS2 nanosheets. Besides, we study the 2H-1T phase transformation mechanism by controlling the ratio of ethylene glycol to water and O-C=O bond plays an important role in promoting 2H-1T phase transformation. (C) 2019 Elsevier B.V. All rights reserved.

Keyword:

2H-1T phase transformation Expanded interlayer spacing Lithium ion batteries Molybdenum disulfide Nanocomposites

Author Community:

  • [ 1 ] [Zong, Jingui; Wang, Fei; Liu, Guannan; Zhao, Mingshu; Yang, Sen; Song, Xiaoping] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Key Lab Shaanxi Adv Funct Mat & Mesoscop Phys,Sch, Xian 710049, Shaanxi, Peoples R China
  • [ 2 ] [Zong, Jingui]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Key Lab Shaanxi Adv Funct Mat & Mesoscop Phys,Sch, Xian 710049, Shaanxi, Peoples R China
  • [ 3 ] [Wang, Fei]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Key Lab Shaanxi Adv Funct Mat & Mesoscop Phys,Sch, Xian 710049, Shaanxi, Peoples R China
  • [ 4 ] [Liu, Guannan]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Key Lab Shaanxi Adv Funct Mat & Mesoscop Phys,Sch, Xian 710049, Shaanxi, Peoples R China
  • [ 5 ] [Zhao, Mingshu]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Key Lab Shaanxi Adv Funct Mat & Mesoscop Phys,Sch, Xian 710049, Shaanxi, Peoples R China
  • [ 6 ] [Yang, Sen]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Key Lab Shaanxi Adv Funct Mat & Mesoscop Phys,Sch, Xian 710049, Shaanxi, Peoples R China
  • [ 7 ] [Song, Xiaoping]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Key Lab Shaanxi Adv Funct Mat & Mesoscop Phys,Sch, Xian 710049, Shaanxi, Peoples R China

Reprint Author's Address:

  • [Wang, Fei]School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Functional Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an; ShaanXi; 710049, China;;

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Source :

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN: 0925-8388

Year: 2019

Volume: 810

4 . 6 5

JCR@2019

5 . 3 1 6

JCR@2020

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:131

JCR Journal Grade:2

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 5

SCOPUS Cited Count: 10

30 Days PV: 7

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