Controllable Design of MoS2 Nanosheets Anchored on Nitrogen-Doped Graphene : Toward Fast Sodium Storage by Tunable Pseudocapacitance

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

286 Scopus Citations
View graph of relations

Author(s)

  • Xin Xu
  • Ruisheng Zhao
  • Wei Ai
  • Bo Chen
  • Hongfang Du
  • Lishu Wu
  • Wei Huang
  • Ting Yu

Detail(s)

Original languageEnglish
Article number1800658
Journal / PublicationAdvanced Materials
Volume30
Issue number27
Online published23 May 2018
Publication statusPublished - 5 Jul 2018
Externally publishedYes

Abstract

Transition-metal disulfide with its layered structure is regarded as a kind of promising host material for sodium insertion, and intensely investigated for sodium-ion batteries. In this work, a simple solvothermal method to synthesize a series of MoS2 nanosheets@nitrogen-doped graphene composites is developed. This newly designed recipe of raw materials and solvents leads the success of tuning size, number of layers, and interplanar spacing of the as-prepared MoS2 nanosheets. Under cut-off voltage and based on an intercalation mechanism, the ultrasmall MoS2 nanosheets@nitrogen-doped graphene composite exhibits more preferable cycling and rate performance compared to few-/dozens-layered MoS2 nanosheets@nitrogen-doped graphene, as well as many other reported insertion-type anode materials. Last, detailed kinetics analysis and density functional theory calculation are also employed to explain the Na+- storage behavior, thus proving the significance in surface-controlled pseudocapacitance contribution at the high rate. Furthermore, this work offers some meaningful preparation and investigation experiences for designing electrode materials for commercial sodium-ion batteries with favorable performance.

Research Area(s)

  • intercalation mechanism, MoS2 nanosheets, nitrogen-doped graphene, pseudocapacitance, sodium storage

Citation Format(s)

Controllable Design of MoS2 Nanosheets Anchored on Nitrogen-Doped Graphene: Toward Fast Sodium Storage by Tunable Pseudocapacitance. / Xu, Xin; Zhao, Ruisheng; Ai, Wei et al.
In: Advanced Materials, Vol. 30, No. 27, 1800658, 05.07.2018.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review