Facile Synthesis of Biocarbon-Based MoS₂ Composite for High-Performance Supercapacitor Application

Abstract

Nanocomposites are gaining high demand for the development of next-generation energy storage devices because of their eco-friendly and cost-effective natures. However, their shortterm energy retainability and marginal stability are regarded as hindrances to overcome. In this work, we demonstrate a highperformance supercapacitor fabricated by biocarbon-based MoS 2 (Bio-C/MoS 2 ) nanoparticles synthesized by a facile hydrothermal approach using date fruits. Here, we report the high specific capacitance for a carbon-based nanocomposite employing the pyrolysis technique of converting agricultural biowaste into a highly affordable energy resource. The biocompatible Bio-C/MoS 2 nanospheres exhibited a high capacitance of 945 F g −1 at a current density of 0.5 A g −1 and an excellent reproducing stability of 92% after 10000 charge/discharge cycles. In addition, the Bio-C/MoS 2 NS showed an exceptional power density of 3800−8000 W kg −1 and an energy density of 74.9−157 Wh kg −1 . The results would pave a new strategy for design of eco-friendly materials toward the high-performance energy storage technology.

Coal Tar Pitch-Based Porous Carbon Loaded MoS2 and Its Application in Supercapacitors

“…Figure b shows that MoS 2 has clear and neat lattice stripes, indicating that the synthesized MoS 2 has high crystallinity. In addition, Figure c shows that the characteristic spacing of the sample lattice plane is 0.647 nm, which can be attributed to the (002) crystal plane in the 2H-MoS 2 phase (Figure d), which is consistent with the following XRD results …”

“…In addition, Figure 2c shows that the characteristic spacing of the sample lattice plane is 0.647 nm, which can be attributed to the (002) crystal plane in the 2H-MoS 2 phase (Figure 2d), which is consistent with the following XRD results. 25 Figure 3 shows the N 2 adsorption and desorption and pore size distribution curve of MoS 2 @PC-M. MoS 2 @PC-M displays a type I/IV isotherm, indicating that it has a large number of micropores and a small amount of mesopores (Figure 3a). The pore size distribution in Figure 3b also further shows that the pore size of MoS 2 @PC-M is mostly concentrated below 2 nm.…”

Carbon Materials as a Conductive Skeleton for Supercapacitor Electrode Applications: A Review

“…Hansa Mahajan et al [ 116 ] developed a high-performance supercapacitor made of biocarbon-based MoS2 (Bio-C/MoS2) nanoparticles manufactured from date fruits using a simple hydrothermal method. We present here the high specific capacitance of a carbon-based nanocomposite created by pyrolysis, a technology for transforming agricultural biowaste into a highly economical energy supply.…”

Post-modified biomass derived carbon materials for energy storage supercapacitors: a review

“…In the past few years, different metal chalcogenides have been studies, such as MoS 2 , MoSe 2 , CoSe 2 , etc. Mahajan et al 124 synthesized Bio-C/MoS 2 nanoparticles from fruit peels and seeds by a hydrothermal method. Bio-C/MoS 2 composites have a very high capacitance of 945 F g −1 at a current density of 0.5 A g −1 , and an extremely high energy density of over 157.9 W h kg −1 and a high-power density of 8000 W kg −1 are obtained.…”