Issue 35, 2015

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

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.

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

Article information

Article type
Paper
Submitted
27 Maijs 2015
Accepted
08 Jūl. 2015
First published
20 Jūl. 2015

Dalton Trans., 2015,44, 15491-15498

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

S. K. Balasingam, J. S. Lee and Y. Jun, Dalton Trans., 2015, 44, 15491 DOI: 10.1039/C5DT01985K

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