Few-layered MoSe2 nanosheets as an advanced electrode material for supercapacitors

Suresh Kannan Balasingam, Jae Sung Lee, Yongseok Jun

Research output: Contribution to journalArticle

135 Citations (Scopus)

Abstract

We report the synthesis of few-layered MoSe2 nanosheets using a facile hydrothermal method and their electrochemical charge storage behavior. A systematic study of the structure and morphology of the as-synthesized MoSe2 nanosheets was performed. The downward peak shift in the Raman spectrum and the high-resolution transmission electron microscopy images confirmed the formation of few-layered nanosheets. The electrochemical energy-storage behavior of MoSe2 nanosheets was also investigated for supercapacitor applications in a symmetric cell configuration. The MoSe2 nanosheet electrode exhibited a maximum specific capacitance of 198.9 F g-1 and the symmetric device showed 49.7 F g-1 at a scan rate of 2 mV s-1. A capacitance retention of approximately 75% was observed even after 10 000 cycles at a high charge-discharge current density of 5 A g-1. The two-dimensional MoSe2 nanosheets exhibited a high specific capacitance and good cyclic stability, which makes it a promising electrode material for supercapacitor applications.

Original languageEnglish
Pages (from-to)15491-15498
Number of pages8
JournalDalton Transactions
Volume44
Issue number35
DOIs
Publication statusPublished - 2015 Jul 8
Externally publishedYes

ASJC Scopus subject areas

  • Inorganic Chemistry

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