High-energy plasma activation of renewable carbon for enhanced capacitive performance of supercapacitor electrode

Adhamash, Ezaldeen; Pathak, Rajesh; Chen, Ke; Rahman, Tawabur; El-magrous, Ahmed A.; Gu, Zhengrong; Lu, Shun; Qiao, Qiquan; Zhou, Yue

doi:10.1016/j.electacta.2020.137148

Cited by 38 publications

(10 citation statements)

References 50 publications

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“…After N 2 plasma activation, these 2D GNSs arrays evolve into a coherent graphene nanofoam with a 3D interconnected porous network structure ( Figure 2 B), which is ascribed to the etching effect instigated by high-energy N 2 plasma, indicating that the graphene is successfully modified by the interaction of energetic electrons and active free radicals (N 2+ /N + ) in the plasma system. 21 , 22 Note that plasma etching is distinguished from wet chemical etching by the fact that it needs no liquids of corrosive acids or bases and long reaction time and the processing is highly reproducible and well-controlled. 23 To reveal the formation of such a delicate nanostructure of graphene, we also recorded the SEM images ( Figure S3 and supplemental information ) of the graphene at different N 2 plasma activation points in time.…”

Section: Resultsmentioning

confidence: 99%

Constructing N-doped and 3D Hierarchical Porous graphene nanofoam by plasma activation for supercapacitor and Zn ion capacitor

Song¹,

Wan²,

Li³

et al. 2023

iScience

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Section: Resultsmentioning

confidence: 99%

Constructing N-doped and 3D Hierarchical Porous graphene nanofoam by plasma activation for supercapacitor and Zn ion capacitor

Song¹,

Wan²,

Li³

et al. 2023

iScience

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“…Overall, in comparison to classical pyrolysis, hydrothermal pyrolysis can maintain a high content of oxygen and nitrogen as a result of its lower preparation temperature . Therefore, biomass-derived carbon materials play an important role in the field of energy conversion and storage, and hydrothermal carbonization combined with other methods is a very effective method for the preparation of target products with excellent properties. ,− …”

Section: Synthetic Strategies For Biomass-derived Carbon Materialsmentioning

confidence: 99%

“…Considering the previous successful application of biomass-derived carbon-based materials in the field of both energy and environment scenarios, they show great potential in electrocatalytic water splitting for the HER as a result of their exceptional properties, including high surface area, controllable pore size, and excellent electrical conductivity. ,, These properties make them ideal catalyst supports, allowing for efficient exposure of active sites and facilitating electron transfer during the electrochemical reaction. Furthermore, biomass-derived carbon-based materials can also be tailored to exhibit desirable textural and chemical properties, enhancing their catalytic activity and stability.…”

Section: Introductionmentioning

confidence: 99%

Review on Biomass-Derived Carbon-Based Materials for Electrocatalytic Hydrogen Production: State of the Art and Outlook

Li,

Lu,

Fang

et al. 2023

Energy Fuels

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The increasing demand for sustainable hydrogen production is driven by the rapid expansion of global energy consumption. Electrocatalytic H 2 production is one of the preferred methods for future energy technology. The hydrogen evolution reaction (HER) has attracted extensive attention as an important half-reaction for traditional water electrolysis. However, cost-effective and efficient electrode materials for HER are scarce. Biomass-derived carbon-based materials could offer a promising solution by utilizing biomass waste through rational engineering design, which can address biomass pollution but also enable the synthesis of effective electrocatalytic materials, aligning with the principles of green chemistry. This study provides a comprehensive review of multiple synthetic methods for producing carbon-based materials from biomass, such as pyrolysis, hydrothermal carbonization, ionothermal carbonization, and molten salt carbonization. The diverse applications of these materials in H 2 production are explored. Effective treatment strategies and valuable insights for future biomass-derived carbon-based material design in H 2 production are also presented. This progress contributes to a better understanding of these materials and offers valuable insights for future explorations.

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“…Furthermore, to investigate the stability of AC-K3 SSC device in 6 M KOH and 1 M TEABF 4 electrolytes, CV and GCD measurements for various increasing sweep rates and current density were measured and shown in Figure 6C, D. There is no distortion of the curves even at higher sweep rates and current density, confirming the better performance of the AC-K3 SSC device material in 1 M TEABF 4 electrolyte. 23…”

Section: Electrochemical Analysis In Twoelectrode Cell Configurationmentioning

confidence: 99%

Almond peel‐derived iron‐induced activated carbon for high energy and long‐life supercapacitor in organic electrolyte

Gunasekaran

Badhulika

2022

Energy Storage

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Most carbon electrode materials for supercapacitors (SCs) are prepared by the conventional KOH activation method that entails several steps at higher temperatures resulting in low‐energy density. Herein, we report one‐step facile carbonization and low‐concentration‐activation aided synthesis of activated carbon (AC) from Prunus dulcis (almond) peel (AP) by using three activating agents, namely (a) KOH (AC‐K1); (b) KOH with K3[Fe(CN)6] (AC‐K2); (c) KOH with K3[Fe(CN)6] and K4[Fe(CN)6] (AC‐K3) for high‐performance symmetric supercapacitor (SSCs) applications in 6 M KOH and 1 M TEABF4 electrolytes. Detailed structural and chemical characterization studies were performed on the as‐prepared AC‐K1/K2/K3 samples and optimization studies revealed that AC‐K3 electrode delivers the highest performance due to the presence of trace amount of iron salts in the carbon network that acts as a catalyst and induces fast charge‐transfer for electrochemical reactions. The BET surface area of AC‐K1, AC‐K2, and AC‐K3 are found to be 408.89 m2 g−1, 819.79 m2 g−1, and 1061.6 m2 g−1, respectively. AC‐K3 electrode delivers an outstanding half‐cell specific capacitance of 320 F g−1 at 1 A g−1 in 6 M KOH. The SC device with AC‐K3 electrode delivers full‐cell specific capacitance of 290 F g−1 and 370.37 F g−1 in 6 M KOH and 1 M TEABF4, respectively. The highest energy density of 41.24 Wh kg−1 at 1349 W kg−1 power with the extended potential of ~2.7 V is delivered by the AC‐K3 electrode in 1 M TEABF4, which is considerably higher and unprecedented compared to other reported carbon materials. After 10 000 cycles, there is a ~100% capacitance retention. As a result of this study, the abundant bio‐derived AC‐K3 is found to be a potential long‐term electrode material for high‐energy SC applications.

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High-energy plasma activation of renewable carbon for enhanced capacitive performance of supercapacitor electrode

Cited by 38 publications

References 50 publications

Constructing N-doped and 3D Hierarchical Porous graphene nanofoam by plasma activation for supercapacitor and Zn ion capacitor

Constructing N-doped and 3D Hierarchical Porous graphene nanofoam by plasma activation for supercapacitor and Zn ion capacitor

Review on Biomass-Derived Carbon-Based Materials for Electrocatalytic Hydrogen Production: State of the Art and Outlook

Almond peel‐derived iron‐induced activated carbon for high energy and long‐life supercapacitor in organic electrolyte

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