Design of layered-stacking graphene assemblies as advanced electrodes for supercapacitors

Qi, Bin; Ren, Kang; Lin, Yingbin; Zhang, Su; Wei, Tong; Fan, Zhuangjun

doi:10.1016/j.partic.2021.03.001

Cited by 21 publications

(6 citation statements)

References 86 publications

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“…Raman spectroscopy is an important means to detect the number of graphite layers and the degree of graphitization [27]. Graphene generally exhibits D peaks, G peaks, and 2D peaks in Raman analyses.…”

Section: X-ray Diffraction (Xrd) and Raman Analysis Of Raw Materials ...mentioning

confidence: 99%

Microwave Preparation of Porous Graphene from Wasted Tires and Its Pyrolysis Behavior

Liu

Yuwen

et al. 2022

Waste Biomass Valor

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Nowadays, most waste tires are disposed of by direct combustion or via land ll, which inevitably creates a large volume of waste. However, the soft carbon found in tires can be an excellent precursor in the preparation of graphene. In this study, waste tires were mixed with potassium hydroxide (KOH) and heated in a microwave environment to be converted rapidly into porous graphene, a process having no complicated pre-processing. Moreover, the processes, tools, and chemical reagents are distinct and inexpensive. Thermogravimetric analysis and dielectric property testing of the tires and mixtures were conducted to study their pyrolysis behavior and catalytic reactions. It was found that when the temperature reached more than 750°C, potassium ions and carbon underwent a reduction reaction to generate potassium vapor, which catalyzed the carbon in the tires into porous graphene, and that microwave heating could shorten the heating time. Simultaneously, the carbon in the tire could be sheared smaller and thinner during the rapid pyrolysis and volatilization of the gas, bene tting the graphene production. The products of the mixed materials were then characterized and analyzed at different holding temperatures and times. As the holding time increased, the degree of graphitization of the products increased, the number of layers increased slightly, and the impurity elements were completely removed from the products.

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Section: X-ray Diffraction (Xrd) and Raman Analysis Of Raw Materials ...mentioning

confidence: 99%

Microwave Preparation of Porous Graphene from Wasted Tires and Its Pyrolysis Behavior

Liu

Yuwen

et al. 2022

Waste Biomass Valor

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“…The growing demand of flexible supercapacitors has aroused great interest. Because of its high electrical conductivity, large specific surface area, and especially its strong mechanical properties, graphene-based film is considered a promising electrode material for supercapacitors [99]. Song et al [100] fabricated a graphene-based film by introducing an activated-carbonized cotton fiber (ACC) to regulate the chemical composition, surface area, and pore size distribution.…”

Section: Applicationsmentioning

confidence: 99%

Graphene-Based Films: Fabrication, Interfacial Modification, and Applications

et al. 2021

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Graphene-based film attracts tremendous interest in many potential applications due to its excellent thermal, electrical, and mechanical properties. This review focused on a critical analysis of fabrication, processing methodology, the interfacial modification approach, and the applications of this novel and new class material. Strong attention was paid to the preparation strategy and interfacial modification approach to improve its mechanical and thermal properties. The overview also discussed the challenges and opportunities regarding its industrial production and the current status of the commercialization. This review showed that blade coating technology is an effective method for industrial mass-produced graphene film with controllable thickness. The synergistic effect of different interface interactions can effectively improve the mechanical properties of graphene-based film. At present, the application of graphene-based film on mobile phones has become an interesting example of the use of graphene. Looking for more application cases is of great significance for the development of graphene-based technology.

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“…5 Among the reported N-doped carbon electrode materials, two-dimensional (2D) graphitic N-doped carbon, has been regarded as the most potential electrode material due to their intrinsic high conductivity and large theoretical specific surface area (SSA). 6 The N-doped graphitic carbon layers were usually prepared through post-doping process or directly decomposition of nitrogen-contained precursors. As reported, by using post-doping method, nitrogen atoms are difficult to enter the carbon skeleton and could be mainly doped at the edge sites.…”

Section: Introductionmentioning

confidence: 99%

Soft‐template assisted preparation of hierarchically porous graphitic carbon nitride layers for high‐performance supercapacitors

Kong

Wang

et al. 2022

J of Applied Polymer Sci

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Strong π–π interaction between two‐dimensional graphitic carbon nitride (CN) layers may cause the stacking phenomenon, which leads to the decrease of its surface area and thus the capacitive properties. Hard templates are usually used to avoid the stacking phenomena. However, the use of them needs redundant removing process and may cause environmental pollution. As a result, in this work, P123 was used as the soft template to expand the inter‐layer distance and create more mesopores in the CN sheets. Benefit from the synergistic effect between the unique porous structure and the high nitrogen doping level, the formed graphitic CN (P2‐g‐CN) could exhibit high specific capacitances (520.5 and 176.0 F g−1 at the current density of 0.5 and 50 A g−1), stable cyclic behavior and satisfied energy density. The superior energy storage performances and the facile synthetic approach of P2‐g‐CN indicate its promising application as high‐performance electrode for supercapacitors and other energy storage devices.

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Design of layered-stacking graphene assemblies as advanced electrodes for supercapacitors

Cited by 21 publications

References 86 publications

Microwave Preparation of Porous Graphene from Wasted Tires and Its Pyrolysis Behavior

Microwave Preparation of Porous Graphene from Wasted Tires and Its Pyrolysis Behavior

Graphene-Based Films: Fabrication, Interfacial Modification, and Applications

Soft‐template assisted preparation of hierarchically porous graphitic carbon nitride layers for high‐performance supercapacitors

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