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Activated Functionalized Carbon Nanotubes and 2D Nanostructured MoS 2 Hybrid Electrode Material for High‐Performance Supercapacitor Applications
Author(s) -
Gupta Honey,
Mothkuri Sagar,
McGlynn Ruairi,
Carolan Darragh,
Maguire Paul,
Mariotti Davide,
Jain P. K.,
Rao Tata Narasinga,
Padmanabham G.,
Chakrabarti Supriya
Publication year - 2020
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201900855
Subject(s) - supercapacitor , materials science , capacitance , carbon nanotube , specific surface area , electrode , nanotechnology , electrochemistry , hybrid material , chemical engineering , bet theory , nanoflower , hydrothermal circulation , energy storage , power density , nanostructure , catalysis , chemistry , organic chemistry , engineering , power (physics) , physics , quantum mechanics
Alkali‐activated functionalized carbon nanotubes (AFCNTs) and 2D nanostructured MoS 2 are investigated as a novel hybrid material for energy‐storage applications. The nanoflower‐like 2D MoS 2 is grown on the surface of AFCNT using the controlled one‐step hydrothermal technique. The activation of functionalized carbon nanotubes results in greater performance due to the improved surface area. The Brunauer–Emmett–Teller (BET) surface area of the AFCNTs is found to be 594.7 m 2 g −1 which is almost 30 times of the as‐prepared carbon nanotubes (CNTs). The improved surface area with attached hydroxyl and carboxylic functional groups helps in the attachment of MoS 2 nanoflowers onto the AFCNT, thus reducing the interfacial resistance and providing an easy path for electron transfer. The electrochemical analysis shows a high specific capacitance of 516 F g −1 at 0.5 A g −1 with a corresponding energy density of 71.76 Wh kg −1 , which is an encouraging reported value from AFCNT and MoS 2 hybrid material. To the best of our knowledge, herein, the first report on AFCNTs and 2D MoS 2 nanostructured hybrid electrode material for supercapacitor applications is provided, and promising results in terms of specific capacitance, energy density, and power density by boosting the properties of individual material are explained.