Electrochemical characteristics of ZnSe and its nanostructured composite for rechargeable Li-ion batteries

Hyuk Tae Kwon, Cheol Min Park

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Abstract

Zinc selenide (ZnSe; mineral name: stilleite) and its nanostructured composite (ZnSe/C) are prepared by simple solid-state synthetic routes, and their potential as electrode materials for rechargeable Li-ion batteries is investigated. The reaction mechanism between ZnSe and Li is demonstrated using ex situ X-ray diffraction and extended X-ray absorption fine structure analyses. The X-ray diffraction patterns and high-resolution transmission electron microscopy observations confirm that ZnSe nanocrystallites in ZnSe/C are uniformly distributed within an amorphous carbon matrix. The nanostructured ZnSe/C composite electrode exhibit excellent electrochemical performances such as a high capacity and long cycling behavior of ca. 705 mAh g-1 over 300 cycles.

Original languageEnglish
Pages (from-to)319-324
Number of pages6
JournalJournal of Power Sources
Volume251
DOIs
StatePublished - 1 Apr 2014

Keywords

  • Anode materials
  • Lithium batteries
  • Nanostructured composite
  • Zinc selenide

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