Irradiated Graphene Loaded with SnO2 Quantum Dots for Energy Storage

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

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Author(s)

  • Ruting Huang
  • Lijun Wang
  • Qian Zhang
  • Zhiwen Chen
  • Zhen Li
  • Dengyu Pan
  • Bing Zhao
  • Minghong Wu

Detail(s)

Original languageEnglish
Pages (from-to)11351-11361
Journal / PublicationACS Nano
Volume9
Issue number11
Online published4 Oct 2015
Publication statusPublished - 24 Nov 2015

Abstract

Tin dioxide (SnO2) and graphene are unique strategic functional materials with widespread technological applications, particularly in the areas of solar batteries, optoelectronic devices, and solid-state gas sensors owing to advances in optical and electronic properties. Versatile strategies for microstructural evolution and related performance of SnO2 and graphene composites are of fundamental importance in the development of electrode materials. Here we report that a novel composite, SnO2 quantum dots (QDs) supported by graphene nanosheets (GNSs), has been prepared successfully by a simple hydrothermal method and electron-beam irradiation (EBI) strategies. Microstructure analysis indicates that the EBI technique can induce the exfoliation of GNSs and increase their interlayer spacing, resulting in the increase of GNS amorphization, disorder, and defects and the removal of partial oxygen-containing functional groups on the surface of GNSs. The investigation of SnO2 nanoparticles supported by GNSs (SnO2/GNSs) reveals that the GNSs are loaded with SnO2 QDs, which are dispersed uniformly on both sides of GNSs. Interestingly, the electrochemical performance of SnO2/GNSs indicates that SnO2 QDs supported by a 210 kGy irradiated GNS shows excellent cycle response, high specific capacity, and high reversible capacity. This novel SnO2/GNS composite has potential practical applications in SnO2 electrode materials during Li+ insertion/extraction.

Research Area(s)

  • electrochemical performance, electron-beam irradiation, graphene nanosheets, microstructural evolution, SnO2 quantum dots

Citation Format(s)

Irradiated Graphene Loaded with SnO2 Quantum Dots for Energy Storage. / Huang, Ruting; Wang, Lijun; Zhang, Qian; Chen, Zhiwen; Li, Zhen; Pan, Dengyu; Zhao, Bing; Wu, Minghong; Wu, C. M. Lawrence; Shek, Chan-Hung.

In: ACS Nano, Vol. 9, No. 11, 24.11.2015, p. 11351-11361.

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