Physicochemical properties and performance of graphene oxide/polyacrylonitrile composite fibers as supercapacitor electrode materials

Jauhari, Jaidan; Almafie, Muhammad Rama; Marlina, Leni; Nawawi, Zainuddin; Sriyanti, Ida

doi:10.1039/d0ra10257a

Cited by 11 publications

(19 citation statements)

References 79 publications

(123 reference statements)

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“…This result is the same as our previous study report. 8 The morphology of graphene oxide from graphite is shown from SEM and transmission electron microscopy (TEM) results in Figure 1 a,b. The wavy morphology of GO is caused by the bending of the 2D sheet, which results in a more thermodynamically stable tangled structure.…”

Section: Resultsmentioning

confidence: 99%

“…The wavy morphology of GO is caused by the bending of the 2D sheet, which results in a more thermodynamically stable tangled structure. 8 , 51 In addition, the buildup of GO was reduced due to the exfoliation of the graphite structure. The oxidant-reduction of graphene is in line with the data of the EDX spectrum shown in Figure 1 c. As expected, the oxygen peak in graphene oxide was only 6.96% and carbon peak was 87.8%.…”

Section: Resultsmentioning

confidence: 99%

“…This peak confirms that the emerging hydroxyl peak may be due to the absorption of water vapor on the GO surface. 8 , 58 , 59 The peak at 2370 cm –1 was O=C=O stretching, indicating a carbon dioxide group. 60 The emergence of the carbon peak was in line with the EDX analysis.…”

Section: Resultsmentioning

confidence: 99%

“…The method and procedure of producing graphene oxide were identical with the method and procedure of producing graphene oxide from palm kernel shells. 8 Furthermore, to create nanofiber membranes using the electrospinning method, the precursor solution was made by dissolving PAN 10% w/w into DMF solvent and graphene oxide from graphite. The weight of the graphene oxide dissolved varied, such as 0.04, 0.14, and 0.24 g, respectively.…”

Section: Methodsmentioning

confidence: 99%

“… 6 , 7 The capacitor in particular is the most popular electricity storage for its high power density and high electric energy charge–discharge. 8 , 9 This condition is closely related with the material offering the best performance, one of which is the dielectric material. Ideally, the dielectric material has high relative permittivity (ε′) and low dielectric loss (tan δ) as the determining factor in increasing energy storage capability.…”

Section: Introductionmentioning

confidence: 99%

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Dielectric Properties and Flexibility of Polyacrylonitrile/Graphene Oxide Composite Nanofibers

et al. 2022

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Energy storage and modern electronics industries are in essential need of high dielectric and highly flexible materials. In this study, polyacrylonitrile and reduced graphene oxide (PAN/GO) were prepared by electrospinning. The composite morphology produced a homogeneous, smooth, and flexible surface with high tensile strength and durability. The diameter of the fibers in the composite mats ranged from 232 to 592 nm. The X-ray diffraction pattern recording displayed a sharp peak characteristic centered between 20 and 30° angles with a maximum degree of crystallinity of 86.23%. The evaluation of the Fourier-transform infrared spectrum indicated the interaction between GO and PAN through hydrogen bonds. The differential scanning calorimetry measurements confirmed that GO acted as a nucleating agent that improves the thermal stability of the composite. The dielectric properties exhibited the relative permittivity of the composite of 86.4 with a dielectric loss (tan δ) of 4.97 at 10 2 Hz, and the maximum conductivity was achieved at 34.9 × 10 –6 Sm –1 at high frequencies.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%