Enhanced Photolumincence and Electrochemical Performance of ZnO/ZnS Coaxial Nanocables

Authors

  • M. Ahmad Nanomaterials Research Group, Physics Division, Directorate of Science, PINSTECH, Islamabad, Pakistan.
  • H. Sun Beijing National Center for Electron Microscopy, Laboratory of Advanced Materials and the State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, China
  • A. Nisar Nanomaterials Research Group, Physics Division, Directorate of Science, PINSTECH, Islamabad, Pakistan.
  • K. Maaz Nanomaterials Research Group, Physics Division, Directorate of Science, PINSTECH, Islamabad, Pakistan.
  • G. Ali Nanomaterials Research Group, Physics Division, Directorate of Science, PINSTECH, Islamabad, Pakistan.
  • S. Karim Nanomaterials Research Group, Physics Division, Directorate of Science, PINSTECH, Islamabad, Pakistan.

Abstract

ZnO based sulfide coaxial nanocables have been prepared by a two-step hydrothermal approach for the investigation of lithium storage capacity. The as-prepared ZnO/ZnS structures are analyzed by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray photospectroscopy (XPS), photoluminescence (PL) and by electrochemical work station. It has been found that these nanostructures demonstrate higher initial discharge capacity of 1096 mAhg-1 with a 69% coulombic efficiency at a rate of 120 mAhg-1 between 2 to 0.02 V. In addition, ZnO/ZnS structures show a significantly improved photoluminescence performance as compare with pure ZnO NWs. The enhanced lithium storage capacity and PL performance is ascribed to the coaxial structure of both materials.

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Published

13-12-2015

How to Cite

[1]
M. Ahmad, H. Sun, A. Nisar, K. Maaz, G. Ali, and S. Karim, “Enhanced Photolumincence and Electrochemical Performance of ZnO/ZnS Coaxial Nanocables”, The Nucleus, vol. 52, no. 4, pp. 180–184, Dec. 2015.

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