MoS2-Quantum-Dot-Interspersed Li4Ti5O12 Nanosheets with Enhanced Performance for Li- and Na-Ion Batteries

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

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Author(s)

  • Guobao Xu
  • Liwen Yang
  • Xiaolin Wei
  • Jianwen Ding
  • Jianxin Zhong

Detail(s)

Original languageEnglish
Pages (from-to)3349-3358
Journal / PublicationAdvanced Functional Materials
Volume26
Issue number19
Online published2 Mar 2016
Publication statusPublished - 17 May 2016

Abstract

Rational nanoscale surface engineering of electroactive nanoarchitecture is highly desirable, since it can both secure high surface-controlled energy storage and sustain the structural integrity for long-time and high-rate cycling. Herein, ultrasmall MoS2 quantum dots (QDs) are exploited as surface sensitizers to boost the electrochemical properties of Li4Ti5O12 (LTO). The LTO/MoS2 composite is prepared by anchoring 2D LTO nanosheets with ultrasmall MoS2 QDs using a simple and effective assembly technique. Impressively, such 0D/2D heterostructure composites possess enhanced surface-controlled Li/Na storage behavior. This unprecedented Li/Na storage process provides a LTO/MoS2 composite with outstanding Li/Na storage properties, such as high capacity and high-rate capability as well as long-term cycling stability. As anodes in Li-ion batteries, the materials have a stable specific capacity of 170 mAhg−1 after 20 cycles and are able to retain 94.1% of this capacity after 1000 cycles, i.e., 160 mAhg−1, at a high rate of 10 C. Due to these impressice performance, the presented 0D/2D heterostructure has great potential in high-performance LIBs and sodium-ion batteries.

Research Area(s)

  • heterostructure, Li4Ti5O12, MoS2, quantum dots, ultrathin nanosheets

Citation Format(s)

MoS2-Quantum-Dot-Interspersed Li4Ti5O12 Nanosheets with Enhanced Performance for Li- and Na-Ion Batteries. / Xu, Guobao; Yang, Liwen; Wei, Xiaolin; Ding, Jianwen; Zhong, Jianxin; Chu, Paul K.

In: Advanced Functional Materials, Vol. 26, No. 19, 17.05.2016, p. 3349-3358.

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