Honeycomb-like N/O self-doped hierarchical porous carbons derived from low-rank coal and its derivatives for high-performance supercapacitor

Li, Li; Wei, Xian‐Yong; Shao, Chang-Wang; Yin, Fan; Sun, Bing; Liu, Fang-Jing; Li, Jiahao; Liu, Zhongqiu; Zong, Zhi‐Min

doi:10.1016/j.fuel.2022.125658

Cited by 10 publications

(8 citation statements)

References 38 publications

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“…The introduction of activators such as KOH, ZnCl 2 , Na 2 CO 3 , K 2 CO 3 , NaHCO 3 , and H 3 PO 4 can promote the formation of biomass-derived porous structures, which will provide low resistance reaction pathways and ion diffusion channels in the supercapacitor system. 153,154 4.1.1. Alkali Activation.…”

Section: Synthesis Of Biomass Porous Carbonmentioning

confidence: 99%

“…Although the heat treatment temperature is lower, environmental contamination and equipment corrosion are more severe. The introduction of activators such as KOH, ZnCl 2 , Na 2 CO 3 , K 2 CO 3 , NaHCO 3 , and H 3 PO 4 can promote the formation of biomass-derived porous structures, which will provide low resistance reaction pathways and ion diffusion channels in the supercapacitor system. , …”

Section: Synthesis Of Biomass Porous Carbonmentioning

confidence: 99%

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Recent Progress and Future Directions of Biomass-Derived Hierarchical Porous Carbon: Designing, Preparation, and Supercapacitor Applications

et al. 2023

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In the past decades, fossil energy depletion, environmental pollution, and greenhouse gas emissions have resulted in serious health threats and ecological imbalances, which prompt researchers to explore green and sustainable supercapacitor energy storage and conversion systems. Biomass is a promising renewable energy source to use for biomass porous carbon for supercapacitor devices because it is renewable and has abundant reserves, a low price, and low pollution carbon energy. To date, although some reports have screened different biomass precursors, carbonization methods, and activation strategies and mechanisms, a comprehensive evaluation and critical review of the correlation among biomass porous carbon properties, including pore structure and surface chemistry, and electrochemical energy storage performances of supercapacitors are absent from a multidisciplinary assessment perspective. Therefore, in this review, we summarize recent advances in the biomass porous carbon synthesis process focusing on different carbonization and activation strategies, point out the scope of applicability and advantages/disadvantages of these methods in supercapacitor applications, and reveal the reaction mechanisms and limitations for commercial production. Then, the relationships among biomass porous carbon properties, including hierarchical porous structure, surface chemistry, specific surface area, and electrochemical performances of supercapacitors are reviewed in detail, which enables researchers to prepare and design advanced materials in a more rational way and facilitates them to explore more cutting-edge energy storage materials. Finally, two effective techniques including heteroatom doping and composite material construction are reviewed to address the general problem of low supercapacitor energy density. This review demonstrates the great potential of biomass porous carbon with superior properties, provides advanced tailoring and design viewpoints for the application fields of high-performance supercapacitors, and is expected to inspire new exploration and boost the practical commercial applications of biomass-derived hierarchical porous carbon material in more energy storage and conversion fields.

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Section: Synthesis Of Biomass Porous Carbonmentioning

confidence: 99%

Section: Synthesis Of Biomass Porous Carbonmentioning

confidence: 99%

Recent Progress and Future Directions of Biomass-Derived Hierarchical Porous Carbon: Designing, Preparation, and Supercapacitor Applications

et al. 2023

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“…The performance of carbon electrode based on g-3 is compared with that of other carbon-based electrodes. At the same current density, the capacitance is higher than that of g-C 3 N 4 /MnO 2 electrode (49.5-87.6 F/g), [38] which is comparable to that of (120 F/g), [39] carbon xerogel (139 F/g), [40] activated carbon (100-204 F/g), [41] and N-doped carbon nanofiber (152.6 F/g), [19] though the value is not as good as that of other porous carbons (251 F/g, [42] 373 F/g, [43] and 462.6 F/g [37] ).…”

Section: Electrochemical Performancementioning

confidence: 68%

Porous Carbons Prepared from Polyacrylonitrile Doped with Graphitic Carbon Nitride or Melamine for Supercapacitor Applications

Fu,

Li,

Yan

et al. 2023

ChemistrySelect

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Melamine and graphitic carbon nitride (g‐C3N4) obtained by thermal condensation of melamine were doped in polyacrylonitrile (PAN) films. Nitrogen‐doped porous carbons were then prepared by pyrolysis of the composite films. Though all the porous carbons had a high nitrogen content of at least 10 %, g‐C3N4 was more efficient than melamine in nitrogen doping. The nitrogen content was elevated with the increase of the amount of each dopant, the highest value of 19.0 % was achieved by g‐3 (porous carbon obtained from the PAN/g‐C3N4 composite film with a mass ratio of 3). Amongst the nitrogen functionalities, pyridinic‐N and pyrrolic‐N held a percentage of at least 80 %. Compared with the carbon materials obtained from melamine doped PAN films, those from g‐C3N4 doped ones exhibited larger surface area and average pore size, and higher pore volume. The difference mainly resulted from the thermostability and size of the dopants. The g‐C3N4 doped materials thus presented more excellent electrochemical properties. The specific capacitance of g‐3 electrode was 135.3 F/g at a current density of 0.5 A/g. Rather than melamine, g‐C3N4 could improve the chemical composition and textural properties of the carbon materials, thus enhancing their supercapacitor performance.

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“…Carbonizing lignite or coal with KOH at 700 • C recently produced hierarchically organized porous carbon under N 2 conditions [63]. Carbonization is used to make diverse porous carbons from different carbon sources, such as light lignite (LL) or light coal, residue light lignite (LRL) or light residue coal, and soluble portions of light lignite (SP LRL ) or soluble amounts of light coal (Figure 5a).…”

Section: Porous Carbon-derived From Lignitementioning

confidence: 99%

Recent Trends in Highly Porous Structured Carbon Electrodes for Supercapacitor Applications: A Review

Sriram

Kurkuri

2023

Energies

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Globally, environmental and energy conservation concerns have sparked a push for more efficient and long-term energy sources. Researchers worldwide have put significant effort into developing supercapacitor-based energy storage devices by fabricating electrode materials from affordable porous carbon. The advantages of porous carbons are low-cost processes, high porosity, high surface area, facilitation of surface modification, high conductivity, high mechanical stability, high chemical stability, facilitation of fast ion transport, high rate capability, and high specific capacitance. Using them as electrodes in supercapacitors (SCs) may lead to better performance in specific capacitance and long-term cyclic stability. This study focuses on the recent development of electrode materials for SCs using porous carbons obtained from several diverse sources, such as biomass, polymers, lignite, metal salts, melamine, etc. Therefore, the topic of this review is the most current development of electrode materials for SCs applications. SCs were subjected to a battery of electrochemical tests, which focused on their performance from a crucial perspective, concentrating on the porous carbon’s surface area and surface functional groups. The report also highlights the supercapacitor’s prospects and challenges.

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Honeycomb-like N/O self-doped hierarchical porous carbons derived from low-rank coal and its derivatives for high-performance supercapacitor

Cited by 10 publications

References 38 publications

Recent Progress and Future Directions of Biomass-Derived Hierarchical Porous Carbon: Designing, Preparation, and Supercapacitor Applications

Recent Progress and Future Directions of Biomass-Derived Hierarchical Porous Carbon: Designing, Preparation, and Supercapacitor Applications

Porous Carbons Prepared from Polyacrylonitrile Doped with Graphitic Carbon Nitride or Melamine for Supercapacitor Applications

Recent Trends in Highly Porous Structured Carbon Electrodes for Supercapacitor Applications: A Review

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