Synergistic effect of silica-covered graphene oxide (in-situ) hybrid nanocomposites for use as a polymer electrolyte membrane for fuel cell applications

Rath, Rosalin; Mohanty, Smita; Kumar, Piyush; Nayak, Sanjay K.; Unnikrishnan, Lakshmi

doi:10.1016/j.surfin.2023.102761

Cited by 9 publications

(4 citation statements)

References 75 publications

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“…[11][12][13] Using hybrid fillers in combination with silica has been shown to improve natural rubber's mechanical and thermal properties, making it more suitable for a wide range of applications. [14][15][16][17][18][19][20] Graphene oxide (GO) has emerged as a promising nanofiller for natural rubber nanocomposites due to its excellent mechanical, thermal, and electrical properties. The addition of graphene oxide (GO) to natural rubber (NR) has shown significant potential for improving the mechanical strength of rubber nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

“…Silica‐based hybrid filler‐reinforced natural rubber is a relatively new development in rubber technology, and it has garnered significant attention in recent years 11–13 . Using hybrid fillers in combination with silica has been shown to improve natural rubber's mechanical and thermal properties, making it more suitable for a wide range of applications 14–20 …”

Section: Introductionmentioning

confidence: 99%

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Advancing mechanical performance in sustainable engineering: Synergistic effects of graphene oxide/nano‐silica hybrid nanofiller via latex coagulation in natural rubber composites

Prajitha,

Jibin,

Abitha

et al. 2024

Polymer Composites

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This research investigates the utilization of a hybrid nanofiller comprising graphene oxide (GO) and amine‐modified nano silica in natural rubber matrix via the latex stage coagulation method. The resulting novel composite materials were characterized comprehensively for their static and dynamic mechanical properties. The hybrid nanofiller exhibited excellent dispersion within the rubber latex, facilitating the formation of a well‐interconnected network structure. The formed network resulted in remarkable improvements in tensile strength, elongation at break, and modulus of the composites. Dynamic mechanical analysis revealed that the hybrid filler (GO/nano‐silica hybrid (GO/NS)) could effectively reinforce the rubber matrix by constraining the mobility of rubber chains, leading to increased stiffness and mechanical strength. In fact, the confinement effect of the nanofillers has been carefully evaluated from dynamic mechanical spectroscopy. The increased glass transition temperature of the rubber nanocomposites specifies the restricted segmental mobility of the rubber chains. Moreover, the hybrid composites displayed significantly low rolling resistance, particularly GO/NS 2 (31% reduction), indicating their potential application as tire treads for fuel‐efficient and green tire manufacturing. The mechanical and rolling resistance properties achieved in these composites can be attributed to the efficient dispersion of the GO/nano‐silica hybrid(GO/NS) nanofiller and the resulting network formation within the rubber matrix. Findings emphasized the composites' viability as sustainable and eco‐friendly tire materials, potential for enhanced fuel efficiency, and reduced environmental footprint in tire manufacturing technology.Highlights The hybrid nanofiller (GO/nano silica hybrid) exhibited excellent dispersion within the rubber latex, leading to the formation of a well‐interconnected network structure. The resulting network structure significantly improved the tensile strength, elongation at break, and modulus of the composite materials. Dynamic mechanical analysis demonstrated that the hybrid filler effectively reinforced the rubber matrix, increasing stiffness and mechanical strength by constraining the mobility of rubber chains. Our hybrid composites displayed a remarkable reduction in rolling resistance, particularly GO/NS2, with a 31% reduction, indicating their potential application as tire treads for fuel‐efficient and green tire manufacturing. The study emphasized the composites viability as sustainable and eco‐friendly tire materials, offering potential benefits for enhanced fuel efficiency and reduced environmental footprint in tire manufacturing technology.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advancing mechanical performance in sustainable engineering: Synergistic effects of graphene oxide/nano‐silica hybrid nanofiller via latex coagulation in natural rubber composites

Prajitha,

Jibin,

Abitha

et al. 2024

Polymer Composites

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“…The formation of a compatible interface between the polymer and graphene was found to be useful for enhancing radiation protection characteristics [150]. Covalent interactions between the matrix and nanofiller play an especially important role in the formation of compatible nanocomposites [151]. In addition, non-covalent interactions, such as π-π stacking and van der Waals forces, have also been observed [152].…”

Section: Interfacial Interactions In Polymer/graphene Nanocompositesmentioning

confidence: 99%

Graphene Nanocomposites for Electromagnetic Interference Shielding—Trends and Advancements

Kausar,

Ahmad,

Zhao

et al. 2023

J. Compos. Sci.

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Electromagnetic interference is considered a serious threat to electrical devices, the environment, and human beings. In this regard, various shielding materials have been developed and investigated. Graphene is a two-dimensional, one-atom-thick nanocarbon nanomaterial. It possesses several remarkable structural and physical features, including transparency, electron conductivity, heat stability, mechanical properties, etc. Consequently, it has been used as an effective reinforcement to enhance electrical conductivity, dielectric properties, permittivity, and electromagnetic interference shielding characteristics. This is an overview of the utilization and efficacy of state-of-the-art graphene-derived nanocomposites for radiation shielding. The polymeric matrices discussed here include conducting polymers, thermoplastic polymers, as well as thermosets, for which the physical and electromagnetic interference shielding characteristics depend upon polymer/graphene interactions and interface formation. Improved graphene dispersion has been observed due to electrostatic, van der Waals, π-π stacking, or covalent interactions in the matrix nanofiller. Accordingly, low percolation thresholds and excellent electrical conductivity have been achieved with nanocomposites, offering enhanced shielding performance. Graphene has been filled in matrices like polyaniline, polythiophene, poly(methyl methacrylate), polyethylene, epoxy, and other polymers for the formation of radiation shielding nanocomposites. This process has been shown to improve the electromagnetic radiation shielding effectiveness. The future of graphene-based nanocomposites in this field relies on the design and facile processing of novel nanocomposites, as well as overcoming the remaining challenges in this field.

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“…A nanocomposite polymer electrolyte membrane was designed by Rath, Rosalin et al using a cost-effective in situ synthesis method, combining graphene oxide and SiO 2 to create an efficient material [ 79 ]. The resulting GS/PVDF-co-HFP nanocomposite membranes were functionalized with chlorosulfonic acid to create SiO 2 -covered graphene oxide nanocomposite membranes (SPCGS) based on sulfonated PVDF-co-HFP (SPCGS), which exhibited improved properties such as increased water absorption, ion exchange capacities, and proton conductivities.…”

Section: Nanomaterials Doped Pemmentioning

confidence: 99%

Recent Advanced Synthesis Strategies for the Nanomaterial-Modified Proton Exchange Membrane in Fuel Cells

et al. 2023

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Hydrogen energy is converted to electricity through fuel cells, aided by nanostructured materials. Fuel cell technology is a promising method for utilizing energy sources, ensuring sustainability, and protecting the environment. However, it still faces drawbacks such as high cost, operability, and durability issues. Nanomaterials can address these drawbacks by enhancing catalysts, electrodes, and fuel cell membranes, which play a crucial role in separating hydrogen into protons and electrons. Proton exchange membrane fuel cells (PEMFCs) have gained significant attention in scientific research. The primary objectives are to reduce greenhouse gas emissions, particularly in the automotive industry, and develop cost-effective methods and materials to enhance PEMFC efficiency. We provide a typical yet inclusive review of various types of proton-conducting membranes. In this review article, special focus is given to the distinctive nature of nanomaterial-filled proton-conducting membranes and their essential characteristics, including their structural, dielectric, proton transport, and thermal properties. We provide an overview of the various reported nanomaterials, such as metal oxide, carbon, and polymeric nanomaterials. Additionally, the synthesis methods in situ polymerization, solution casting, electrospinning, and layer-by-layer assembly for proton-conducting membrane preparation were analyzed. In conclusion, the way to implement the desired energy conversion application, such as a fuel cell, using a nanostructured proton-conducting membrane has been demonstrated.

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Synergistic effect of silica-covered graphene oxide (in-situ) hybrid nanocomposites for use as a polymer electrolyte membrane for fuel cell applications

Cited by 9 publications

References 75 publications

Advancing mechanical performance in sustainable engineering: Synergistic effects of graphene oxide/nano‐silica hybrid nanofiller via latex coagulation in natural rubber composites

Advancing mechanical performance in sustainable engineering: Synergistic effects of graphene oxide/nano‐silica hybrid nanofiller via latex coagulation in natural rubber composites

Graphene Nanocomposites for Electromagnetic Interference Shielding—Trends and Advancements

Recent Advanced Synthesis Strategies for the Nanomaterial-Modified Proton Exchange Membrane in Fuel Cells

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