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Microwave‐Assisted Synthesis of Few‐Layered TaTe 2 and Its Application as Supercapacitor
Author(s) -
Chakravarty Disha,
Kumar Praveen,
Ugale Vaishali S.,
Late Dattatray J.
Publication year - 2015
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201403220
Subject(s) - scanning electron microscope , tantalum , chemistry , transmission electron microscopy , nanosheet , photoluminescence , anode , analytical chemistry (journal) , spectroscopy , supercapacitor , chemical engineering , tellurium , nanotechnology , electrode , materials science , inorganic chemistry , capacitance , optoelectronics , composite material , organic chemistry , physics , quantum mechanics , engineering
Abstract We report a simple and rapid microwave‐assisted synthesis of tantalum telluride (TaTe 2 ) nanosheets. The ratio of tantalum pentachloride (TaCl 5 ) and elemental tellurium (Te) powder were adjusted in the presence of NaBH 4 in such a way as to obtain the TaTe 2 nanosheet. The samples were characterized by various techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), UV/Vis spectroscopy, photoluminescence (PL) spectroscopy, and XRD. Our SEM, TEM, and AFM results show the formation of sheet‐like morphology, while the XRD data confirms the high crystalline quality and stable phase of the TaTe 2 formed. The supercapacitor cells were fabricated by using TaTe 2 nanosheets as anode material, platinum metal wire as a counterelectrode, and Ag/AgCl as reference electrode. The calculated coulombic efficiency is more than 95 %, while the cycle‐to‐cycle decrease in capacity is less than 5 %. The maximum discharge or charging capacity is below 2.4 W h/kg, which is an ideal characteristic for achieving supercapacitor behavior.