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Synthesis and characterization of metal chalcogenide modified graphene oxide sandwiched manganese oxide nanofibers on nickel foam electrodes for high performance supercapacitor applications
- Source :
- Journal of Alloys and Compounds. 850:156346
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Nanoparticles of metal chalcogenide (MoS2) are incorporated on reduced graphene oxide nano sheet rolled mesoporous manganese oxide were prepared by feasible ultrasonic assisted deposition technique. The above prepared nanocomposite is further coated on Nickel foam substrate for direct application towards high performance supercapcitor energy storage application. The detailed studies of surface and textural property such as crystalline phase stability, surface structure, particle size, zeta potential measurements have been explained for all prepared nanocomposite samples. The crystalline phase of as prepared mesoporous manganese oxide is forms the mixed phase of Mn2O3 bixbyite phase. The thermal stability of as prepared sample improved up to 400 °C in oxygen atmosphere and negative zeta potential obtained for all prepared nanocomposite sample. The different amount of MoS2 nanoparticle (10 mg −100 mg range) was utilized to study the effect of molybdenum sulphide (additive) addition on graphene oxide rolled mesoporous manganese oxide nanofiber matrix. Increased quantity of MoS2 addition increase the electrochemical supercapacitance value of the nanocomposite coated nickel foam based electrode. Nanofibers morphology of mesoporous manganese oxide with reduced graphene oxide is visibly seen in the TEM images. Needle like metallic rich shapes are also obtained due to MoS2 nanoparticle existence and it inserted in the Nanofiber/graphene sheet structure. The higher supercapacitance values are obtained for Nickel foam modified MoS2 deposited graphene oxide rolled MnOx nanocomposite (980 and 788 F/g) under acidic electrolyte medium and charge/discharge cycle stability have also been studied for all prepared nanocomposites.
- Subjects :
- Materials science
Nanocomposite
Graphene
Mechanical Engineering
Metals and Alloys
Oxide
chemistry.chemical_element
Nanoparticle
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Bixbyite
01 natural sciences
0104 chemical sciences
law.invention
Nickel
chemistry.chemical_compound
chemistry
Chemical engineering
Mechanics of Materials
law
Nanofiber
Materials Chemistry
0210 nano-technology
Mesoporous material
Subjects
Details
- ISSN :
- 09258388
- Volume :
- 850
- Database :
- OpenAIRE
- Journal :
- Journal of Alloys and Compounds
- Accession number :
- edsair.doi...........216d4a0998a002b97d887a395e04f84e