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Structural Manipulation of Layered TiS 2 to TiS 3 Nanobelts through Niobium Doping for High‐Performance Supercapacitors
Author(s) -
SajediMoghaddam Ali,
MayorgaMartinez Carmen C.,
Vaghasiya Jayraj V.,
Alduhaish Osamah,
Sofer Zdenek,
Pumera Martin
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202000929
Subject(s) - niobium , supercapacitor , materials science , doping , gravimetric analysis , transition metal , capacitance , nanotechnology , characterization (materials science) , electrochemistry , electrolyte , titanium , chemical engineering , optoelectronics , metallurgy , chemistry , electrode , biochemistry , organic chemistry , engineering , catalysis
Unraveling the influence of incorporating transition metal elements on layered transition metal chalcogenides for energy storage application remains a challenge. Herein, niobium (Nb)‐doped layered titanium disulfide (TiS 2 ) is applied to generate novel compounds Ti 1−x Nb x S 2 (x=0.05, 0.1 and 0.20). Interestingly, TiS 3 nanobelts are formed in the resulting materials, which is proven by systematic morphological and structural characterization. It has been found that Nb‐doped TiS 2 compounds demonstrate superior electrochemical capacitive activity, reaching up to a 63.2 % increase in gravimetric capacitance in 1 M Na 2 SO 4 electrolyte compared with that of the Nb‐free TiS 2 . This remarkably enhanced capacity behavior is attributed to Nb doping resulting a structural transition of Layered TiS 2 to TiS 3 nanobelts.
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