Ultrathin sheet structure Ni-MoS2 anode and MnO2/water dispersion graphene cathode for modern asymmetrical coin cell supercapacitor

Palanisamy, Siva; Periasamy, Prabu; Subramani, Karthik; Shyma, Arunkumar Prabhakaran; Rajendran, V.

doi:10.1016/j.jallcom.2017.10.118

Cited by 20 publications

(6 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…MoS 2Àx nanosheets annealed at 700 C signicantly reduces the diffusion path length of electrolyte ions and electrons, thus increasing the diffusion and migration rate of electrolyte ions in the process of charge and discharge. 60 In addition, voids scattered between the nanosheets can promote the transfer rate of electrolyte ions and avoid volume changes during charge/discharge. 61 The stability of the energy storage device is a crucial parameter in supercapacitor application.…”

Section: Electrochemical Measurementmentioning

confidence: 99%

Facile synthesis of vacancy-induced 2H-MoS₂ nanosheets and defect investigation for supercapacitor application

Wang

Neville

2021

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Electrochemical Measurementmentioning

confidence: 99%

Facile synthesis of vacancy-induced 2H-MoS₂ nanosheets and defect investigation for supercapacitor application

Wang

Neville

2021

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…Three-dimensional ZnFe2O4@MnO2 hierarchical core/shell nanosheet arrays as battery-type electrode exhibit high capacity of 1084 C g -1 at current density of 2 A g -1 with coulombic efficiency of 96.1% after 5000 cycles [12]. Recent MnO2-based composites including MnO2/carbon, MnO2/graphene, MnO2 nanowires@Ni1-xCoxOy heterostructures, CoMoO4@C@MnO2 core-shell structures and MnO2/carbonized cotton textile hybrids have been developed as electrodes in supercapacitors [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical performance of nanosized MnO2 synthesized by redox route using biological reducing agents

Abuzeid

Hashem

Kaus

et al. 2018

Journal of Alloys and Compounds

View full text Add to dashboard Cite

For more than a century, manganese dioxides (MDOs) have been used as electrochemically active materials in energy storage and conversion applications. To reduce the cost and hazardous impact of synthesis, a redox method was used to prepare MnO2 using extracts of green (GT-MnO2) and black (BT-MnO2) tea as biological reducing agents. Polyphenols present in the extracts of tea not only reduce Mn 7+ ions but also act as "capping agents" to stabilize and prevent the produced MnO2 nanoparticles from degradation and aggregation. Elemental, structural properties and morphology of nanosized α-KxMnO2 were studied by thermogravimetric analysis, X-ray powder diffraction and Raman spectroscopy, which revealed the different crystallinity between GT-MnO2 and BT-MnO2 due to the strength of the antioxidant species. Electrochemical investigations highlight the beneficial presence of K + ions in (2×2) tunnels; with a higher concentration, α-K0.135MnO2 exhibits a discharge specific capacity of 155 mAh g-1 after 20 cycles at C/26 rate.

show abstract

“…22 Based on its theoretical capacitance values, the intensive investigation of several composites of MoS 2 -based supercapacitors has been successfully reported for metal hydroxides, activated carbon, graphene, metal oxide, carbon nanotubes, polymers, and metal sulfides. [23][24][25][26][27][28][29] There are also a few metal-doped composites reported for MoS 2 -based supercapacitors such as Nickel, 30 Manganese, 31 Cobalt, 11 and Platinum 32 for improving performance. In this work, we reported one-pot hydrothermally assisted non-modulated synthesis of cobalt-doped MoS 2 for supercapacitor electrode materials.…”

Section: Introductionmentioning

confidence: 99%

“…There are also a few metal‐doped composites reported for MoS 2 ‐based supercapacitors such as Nickel, 30 Manganese, 31 Cobalt, 11 and Platinum 32 for improving performance. In this work, we reported one‐pot hydrothermally assisted non‐modulated synthesis of cobalt‐doped MoS 2 for supercapacitor electrode materials.…”

Section: Introductionmentioning

confidence: 99%

Non‐modulated synthesis of cobalt‐doped MoS ₂ for improved supercapacitor performance

Bello

Otun

Nyongombe

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

A facile hydrothermal technique was employed to synthesized non-modulated cobalt-doped molybdenum sulfide (MoS 2 ) nanoflowers. The as-prepared materials were coated on commercially available Ni-foam to fabricate electrode materials for supercapacitor applications. The elucidation of the structural information, surface morphology, microstructural properties, as well as surface areas was successfully carried out by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) measurements, respectively. XRD and Raman analysis confirmed the structural changes of the materials, which depict a successful synthesis of cobalt-doped MoS 2 with typical phase change and the redshifted peaks of Raman spectra compared to pristine MoS 2 . The flower-like morphology and agglomerating nanosheets of various nanometer diameters of the microstructural properties of the obtained Co-MoS 2 were established from SEM and TEM images. The surface areas of the CMS 1 and CMS 3 electrode materials were, respectively, calculated to be 18.0607 and 14.5519 mg À2 from BET surface analysis. The electrode materials were electrochemically evaluated for their energy storage performance, the materials exhibit specific capacitances of 164 and 146 Fg À1 at 1 Ag À1 for the working electrodes (CMS 1 and CMS 3 ), respectively. Also, the energy densities of 3.67 and 2.05 Wh/kg with power densities of 3279.97 and 2960.26 W/kg were calculated for both electrode materials, respectively. The results illustrate that the Co-MoS 2 can be suitable for an effective electrode material for prospective supercapacitor applications. NOVELTY STATEMENT• Non-modulated Co-MoS 2 was synthesized via facile hydrothermal techniques.• It was established that any concentration of Cobalt higher than 3 moles might reduce the performance of the nanocomposite.

show abstract

Ultrathin sheet structure Ni-MoS2 anode and MnO2/water dispersion graphene cathode for modern asymmetrical coin cell supercapacitor

Cited by 20 publications

References 31 publications

Facile synthesis of vacancy-induced 2H-MoS₂ nanosheets and defect investigation for supercapacitor application

Facile synthesis of vacancy-induced 2H-MoS₂ nanosheets and defect investigation for supercapacitor application

Electrochemical performance of nanosized MnO2 synthesized by redox route using biological reducing agents

Non‐modulated synthesis of cobalt‐doped MoS ₂ for improved supercapacitor performance

Contact Info

Product

Resources

About

Ultrathin sheet structure Ni-MoS2 anode and MnO2/water dispersion graphene cathode for modern asymmetrical coin cell supercapacitor

Cited by 20 publications

References 31 publications

Facile synthesis of vacancy-induced 2H-MoS2 nanosheets and defect investigation for supercapacitor application

Facile synthesis of vacancy-induced 2H-MoS2 nanosheets and defect investigation for supercapacitor application

Electrochemical performance of nanosized MnO2 synthesized by redox route using biological reducing agents

Non‐modulated synthesis of cobalt‐doped MoS 2 for improved supercapacitor performance

Contact Info

Product

Resources

About

Facile synthesis of vacancy-induced 2H-MoS₂ nanosheets and defect investigation for supercapacitor application

Facile synthesis of vacancy-induced 2H-MoS₂ nanosheets and defect investigation for supercapacitor application

Non‐modulated synthesis of cobalt‐doped MoS ₂ for improved supercapacitor performance