Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 6, Issue 11, Pages 15072-15082Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b03366
Keywords
EDLC:MWCNTs; Pseudocapacitive:MoTe2; Nanocomposite; Solid-state supercapacitor
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Funding
- Government of India [DST/TMD/MES/2k16/09]
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Present innovation emphasizes the design and development of hybrid nanoarchitecture by using simple two-step chemical routes, namely, dip and dry, for multiwalled carbon nanotubes (MWCNTs) followed by coating of molybdenum telluride (MoTe2) nanopebbles using successive ionic layer adsorption and reaction (SILAR) to form a thin film onto flexible stainless steel (SS) substrate toward the fabrication of a symmetric solid-state and flexible supercapacitor device. The MVVCNTs/MoTe2, nanostructured composite exhibits strong synergy and materials mutualism between electric double-layer capacitive (EDLC) behaved MWCNTs and pseudocapacitive MoTe2 leading to the enhanced super-capacitive performance. Interestingly, the formed unique nanoarchitecture offers an excellent charge-storing capability of 502 F/g as the specific capacitance at 2 mV/s in liquid configuration with excellent rate capability and cyclic stability. The formed flexible complete solid-state symmetric supercapacitor (FCSS-SC) device using two SS/MWCNTs/MoTe2 electrodes with poly(vinyl alcohol)-lithium perchlorate (PVA-LiCIO4) gel electrolyte as a mediator has demonstrated an upgraded potential window resulting in superior capacitance and energy density. Additionally, mechanical flexibility, cyclic stability, and hands-on application by a glowing light-emitting diode (LED) can attract the value of the formed device toward the advanced energy storage meadow.
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