Tungsten oxide decorated graphene oxide nanocomposite: Chemical synthesis, characterization and application in super capacitors

Kalaiarasi, S.; Kavitha, M.; Karpagavinayagam, P.; Vedhi, C.; Muthuchudarkodi, R.R.

doi:10.1016/j.matpr.2020.07.207

Cited by 11 publications

(7 citation statements)

References 29 publications

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“…As for the GO peak reported in [33], the broad peak at 26° did not show in any XRD patterns. Figure 4 shows TGA thermograms for CS, PLA, CS/PLA and CS/PLA-GO at various compositions.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 61%

“…From the result, some distinct changes in diffractograms of CS/PLA-GO composites are observed, indicating that CS, PLA and GO interacted with each other in a certain manner. As for the GO peak reported in [33], the broad peak at 26 • did not show in any XRD patterns. 4 shows TGA thermograms for CS, PLA, CS/PLA and CS/PLA-GO at various compositions.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 62%

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Evaluation on Structural Properties and Performances of Graphene Oxide Incorporated into Chitosan/Poly-Lactic Acid Composites: CS/PLA versus CS/PLA-GO

et al. 2021

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In this work, to fabricate a novel composite consisting of chitosan/poly-lactic acid doped with graphene oxide (CS/PLA-GO), composites were prepared via solution blending method to create various compositions of CS and PLA (90/10, 70/30 and 50/50CS/PLA-GO). Graphene oxide (GO) was added into a PLA solution prior to blending it with chitosan (CS). The surface morphology and structural properties of synthesized composites were characterized using FT-IR, SEM and XRD analysis. The performances of synthesized composites on thermal strength, mechanical strength, water absorption, and microbial activity were also evaluated through standard testing methods. The morphology of 70/30CS/PLA-GO became smoother with the addition of GO due to enhanced interfacial adhesion between CS, PLA and GO. The presence of GO has also improved the miscibility of CS and PLA and has superior properties compared to CS/PLA composites. Moreover, the addition of GO has boosted the thermal stability of the composite, with a significant enhancement of Td and Tg. The highest Td and Tg were accomplished at 389 °C and 76.88 °C, respectively, for the 70/30CS/PLA-GO composite in comparison to the CS and PLA that recorded Td at 272 °C and 325 °C and Tg at 61 °C and 60 °C, respectively. In addition, as reinforcement, GO provided a significant influence on the tensile strength of composites where the tensile modulus showed remarkable improvement compared to pure CS and CS/PLA composites. Furthermore, CS/PLA-GO composites showed excellent water-barrier properties. Among other compositions, 70/30CS/PLA revealed the greatest decrement in water absorption. From the antibacterial results, it was observed that 90/10CS/PLA-GO and 70/30CS/PLA-GO showed an inhibitory effect and had wide inhibition zones which were 8.0 and 8.5 mm, respectively, against bacteria Bacillus Subtillis B29.

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“…As for the GO peak reported in [33], the broad peak at 26° did not show in any XRD patterns. Figure 4 shows TGA thermograms for CS, PLA, CS/PLA and CS/PLA-GO at various compositions.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 61%

Section: X-ray Diffraction (Xrd)mentioning

confidence: 62%

Evaluation on Structural Properties and Performances of Graphene Oxide Incorporated into Chitosan/Poly-Lactic Acid Composites: CS/PLA versus CS/PLA-GO

et al. 2021

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“…These capacitors use a moist separator, and are utilized for filtering, signal coupling, and buffering. The third type is the supercapacitor, the best application of these capacitors is energy storing, where frequent charge/discharge is required at a high current for short durations [ 102 , 103 ]. Despite the continual research of electrolyte capacitors, the major disadvantages still remain, including power loss.…”

Section: Electrical Energy Storage Classificationmentioning

confidence: 99%

Review on Comparison of Different Energy Storage Technologies Used in Micro-Energy Harvesting, WSNs, Low-Cost Microelectronic Devices: Challenges and Recommendations

Riaz

Sarker

Saad

et al. 2021

Sensors

141

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This paper reviews energy storage systems, in general, and for specific applications in low-cost micro-energy harvesting (MEH) systems, low-cost microelectronic devices, and wireless sensor networks (WSNs). With the development of electronic gadgets, low-cost microelectronic devices and WSNs, the need for an efficient, light and reliable energy storage device is increased. The current energy storage systems (ESS) have the disadvantages of self-discharging, energy density, life cycles, and cost. The ambient energy resources are the best option as an energy source, but the main challenge in harvesting energy from ambient sources is the instability of the source of energy. Due to the explosion of lithium batteries in many cases, and the pros associated with them, the design of an efficient device, which is more reliable and efficient than conventional batteries, is important. This review paper focused on the issues of the reliability and performance of electrical ESS, and, especially, discussed the technical challenges and suggested solutions for ESS (batteries, supercapacitors, and for a hybrid combination of supercapacitors and batteries) in detail. Nowadays, the main market of batteries is WSNs, but in the last decade, the world’s attention has turned toward supercapacitors as a good alternative of batteries. The main advantages of supercapacitors are their light weight, volume, greater life cycle, turbo charging/discharging, high energy density and power density, low cost, easy maintenance, and no pollution. This study reviews supercapacitors as a better alternative of batteries in low-cost electronic devices, WSNs, and MEH systems.

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“…The most investigated pseudocapacitive nanoparticles have been conductive polymers and metal oxides, particularly the oxides of transition metals like nickel, cobalt, manganese, titanium, vanadium, molybdenum, tungsten and others. [26][27][28][29][30][31][32][33][34][35][36][37][38][39] The strategies used to prepare such composites can be classied as either in situ decoration of the NPs during the synthesis phase of the nanocarbon material, or post-synthesis methods in which the nanocarbon material is processed to allow for the formation of stable composites upon the addition of the NPs. Methodology-wise, the composite synthesis may proceed through diverse routes, such as solution chemistry, [40][41][42][43][44][45][46][47][48][49][50] hydrothermal or solvothermal methods, [51][52][53][54] self-assembly, [55][56][57] microwave-irradiation, [58][59][60] photo-reduction, 61 mechanical routes, 62,63 electrochemical deposition, 64,65 electrospinning or templating with a carbon precursor, 66,67 and others.…”

Section: Introductionmentioning

confidence: 99%

One-step and room-temperature fabrication of carbon nanocomposites including Ni nanoparticles for supercapacitor electrodes

et al. 2022

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Tungsten oxide decorated graphene oxide nanocomposite: Chemical synthesis, characterization and application in super capacitors

Cited by 11 publications

References 29 publications

Evaluation on Structural Properties and Performances of Graphene Oxide Incorporated into Chitosan/Poly-Lactic Acid Composites: CS/PLA versus CS/PLA-GO

Evaluation on Structural Properties and Performances of Graphene Oxide Incorporated into Chitosan/Poly-Lactic Acid Composites: CS/PLA versus CS/PLA-GO

Review on Comparison of Different Energy Storage Technologies Used in Micro-Energy Harvesting, WSNs, Low-Cost Microelectronic Devices: Challenges and Recommendations

One-step and room-temperature fabrication of carbon nanocomposites including Ni nanoparticles for supercapacitor electrodes

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