Synthesizing few-layer carbon materials from asphaltene by thermal treatment

AlHumaidan, Faisal S.; Rana, Mohan S.; Vinoba, Mari; Rajasekaran, Navvamani; AlHenyyan, H.Y.; Ali, Afnan A.

doi:10.1016/j.diamond.2022.109316

Cited by 12 publications

(10 citation statements)

References 54 publications

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“…Bands between 2960 cm −1 and 2854 cm −1 indicate that the material has aliphatic structure [ 32 ]. The band at 1630 cm −1 is associated with C=O stretching vibration of carboxyl and carbonyl functional groups, while the band at 1120 cm −1 is associated with C–O stretching vibrations [ 33 ]. Peak at 670 cm −1 confirm presence of manganese oxide (Mn–O stretching modes) [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

Deep Eutectic Solvent for Facile Synthesis of Mn3O4@N-Doped Carbon for Aqueous Multivalent-Based Supercapacitors: New Concept for Increasing Capacitance and Operating Voltage

et al. 2022

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The capacitance and operating voltage of supercapacitors as well as their energy density have been increased by development of different materials and electrolytes. In this paper, two strategies, for the first time, were used to improve energy density: Mn3O4- and N-dual doped carbon electrode and aqueous mixture of multivalent ions as electrolyte. Mn3O4- and N-dual doped carbon was prepared by a novel and cost-effective procedure using deep eutectic solvent. XRD, XPS, and FTIR confirmed presence of Mn3O4 and nitrogen, while SEM and EDS elemental mapping showed micrometer-sized nanosheets with uniform distribution of C, O, N, and Mn atoms. Charge storage behavior of carbon was tested in aqueous multivalent-based electrolytes and their mixture (Ca2+-Al3+). Regarding both specific capacitance and workable voltage, the Ca2+-Al3+ mixed electrolyte was found as the best optimal solution. The calcium addition to the Al-electrolyte allows the higher operating voltage than in the case of individual Al(NO3)3 electrolyte while the addition of Al3+ ion in the Ca(NO3)2 electrolyte improves the multivalent-ion charge storage ability of carbon. As a result, the specific energy density of two-electrode Mn3O4@N-doped carbon//Al(NO3)2+Ca(NO3)2//Mn3O4@N-doped carbon supercapacitor (34 Wh kg−1 at 0.1 A g−1) overpasses the reported values obtained for Mn-based carbon supercapacitors using conventional aqueous electrolytes.

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Section: Resultsmentioning

confidence: 99%

Deep Eutectic Solvent for Facile Synthesis of Mn3O4@N-Doped Carbon for Aqueous Multivalent-Based Supercapacitors: New Concept for Increasing Capacitance and Operating Voltage

et al. 2022

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“…13,14 This study is a continuation to our previous effort, in which we have synthesized few-layer carbon material from asphaltene by thermal treatment. 9,10 In this work, we have further extended our previous research to provide a thermal treatment method that can synthesis graphene derivatives, similar to sulfur/ nitrogen co-doped few layer graphene, from different asphaltene samples. The asphaltene samples have been selected from different origins to ensure the diversication in structures and compositions.…”

Section: Introductionmentioning

confidence: 95%

“…The thermal treatment in this study was performed in both a stationary-tube furnace and a rotating quartz-tube furnace. 9 The carbonized products from the stationary furnace were inhomogeneous with signicant amount of ash, while the ones obtained from the rotating furnace were homogeneous without any traces of ash. Therefore, the rotating quartz-tube furnace was adopted for the carbonization of asphaltene.…”

Section: Thermal Treatmentmentioning

confidence: 99%

“…6,7 Chemical treatments were also employed to synthesize graphene derivatives from asphaltene. 8,9 Likewise, the thermal approach was attempted to synthesize graphene derivative from asphaltene. 9,10 The recent trend in research clearly reveal that such synthesized carbon materials have expanding industrial applications in energy storage, 11 sensor development, 12 and thermal management.…”

Section: Introductionmentioning

confidence: 99%

“…8,9 Likewise, the thermal approach was attempted to synthesize graphene derivative from asphaltene. 9,10 The recent trend in research clearly reveal that such synthesized carbon materials have expanding industrial applications in energy storage, 11 sensor development, 12 and thermal management. 13,14 This study is a continuation to our previous effort, in which we have synthesized few-layer carbon material from asphaltene by thermal treatment.…”

Section: Introductionmentioning

confidence: 99%

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