Coal slime waste: a promising precursor to develop highly porous activated carbon for supercapacitors

Li, Jiajia; Hu, Jiajun; Wang, Kai; Xia, Hongyan

doi:10.1007/s42823-020-00138-w

Cited by 15 publications

(9 citation statements)

References 38 publications

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“…Lv et al 151 utilized oxide with a PVA cross-linking polymer for the fabrication of 3D hierarchical porous carbon aerogels with the help of a freezedrying and calcination process in a superperformance long cycle life supercapacitor. It is to be mentioned that coal slime waste was investigated for developing highly porous activated carbon for supercapacitors that was reported by Li et al 117 Interestingly, flexible carbon nanofibers (with a specific surface area 743 m 2 g −1 and specific capacitance of 409 F g −1 ) from Powder River Basin coal were made for utilization in highperformance supercapacitors.…”

Section: Coal-derived Activated Carbon As Electrode Materials For Sup...mentioning

confidence: 99%

“…There have been multiple studies carried out in previous years on the probability of activation methods and using activated carbon from coal as an electrode material in supercapacitor applications. ,,,,,,− Physical activation is accomplished by heating the precursor to extremely high temperatures to avoid the atmospheric air, often in the range of 700–1200 °C. Chemical activation necessitates low-temperature (400–700 °C) heating of a precursor using an activating agent such as KOH, NaOH, ZnCl 2 , H 3 PO 4 , etc .…”

Section: Coal-derived Activated Carbon As Electrode Materials For Sup...mentioning

confidence: 99%

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Coal-Derived Activated Carbon for Electrochemical Energy Storage: Status on Supercapacitor, Li-Ion Battery, and Li–S Battery Applications

2021

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In this era of exponential growth in energy demand and its adverse effect on global warming, electrochemical energy storage systems have been a hot pursuit in both the scientific and industrial communities. In this regard, supercapacitors, Li-ion batteries, and Li–S batteries have evolved as the most plausible storage systems with excellent commercial adaptations. Intending to get the best performance from these systems, researchers all over the world have been engaging to develop various new methods for the synthesis of advanced carbon materials with a target of economical viability, abundance, low cost, and ease of preparation. Among them, activated carbon has proven to be an attractive electrode material due to its many advantageous properties such as a large surface area, high pore density, good conductivity, low cost, and good mechanical and chemical stability compared to other alternatives, such as high-cost graphene, carbon nanotubes, Mxenes, transition metal complexes, and conducting polymers. Among the numerous synthetic and biological resources that are used for the synthesis of activated carbon, coal/coal-like materials have found tremendous importance in recent times due to their relative abundance, extremely low cost, and excellent large-scale production possibilities. The present review attempts to collect all the significant innovations carried out for the use of cheap and economically viable coal-derived/-based activated carbon and its composites in supercapacitors, Li-ion batteries, and Li–S batteries and to critically evaluate their comparative performances. The progress in advanced three-dimensional printing technology for these energy storage applications is also discussed. The highlight of this review is also to assess the challenges that remain for the synthesis of high-performance electroactive-activated carbon materials from coal-based resources as alternative electrode materials, which would become promising candidates in the foreseeable future.

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Section: Coal-derived Activated Carbon As Electrode Materials For Sup...mentioning

confidence: 99%

Section: Coal-derived Activated Carbon As Electrode Materials For Sup...mentioning

confidence: 99%

Coal-Derived Activated Carbon for Electrochemical Energy Storage: Status on Supercapacitor, Li-Ion Battery, and Li–S Battery Applications

2021

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“…Chen et al 10 found that CAC prepared from coal pyrolysis residue after deashing has a more developed pore structure. Li et al 11 found that CAC prepared after coal slime deashing treatment has a higher BET specific surface area and Note: M, A, V, and FC represent moisture, ash, volatile, and fixed carbon, respectively; C, N, H, S, and O represent the contents of carbon, nitrogen, hydrogen, sulfur, and oxygen, respectively; ad stands for air-dry basis; A O/C stands for the ratio of oxygen to carbon atoms; and A H/C is the ratio of hydrogen to carbon. pore volume.…”

Section: Preparation Of Cacmentioning

confidence: 99%

“…Purevsuren et al studied the adsorption of methylene blue (a common dye) in solution to CAC prepared from different grades of coal (from lignite to anthracite) and found that the volatile matter and ash contents were the key factors determining pore structure formation. Some studies have shown that less ash is beneficial to the development of pore structure after deashing. − Tamarkina et al studied the effects of the carbon and volatile contents of raw materials on the pore structure of AC within a certain range. The results showed that with the decrease in carbon content and the increase in volatile content, the Brunauer – Emmett – Teller (BET) specific surface area of AC increased.…”

Section: Introductionmentioning

confidence: 99%

Review on Coal-Based Activated Carbon: Preparation, Modification, Application, Regeneration, and Perspectives

Zhao

Mai

et al. 2023

Energy Fuels

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Coal is not only a type of fuel but also a precious resource with dual value attributes. Coal is usually used for combustion and electricity generation and is also used as a feedstock in the production of fuels, chemicals, and other high value-added products to improve efficiency. Among these products, coal-based activated carbon is an important part of the high value-added and resource utilization of coal. In this paper, the relevant research on coal-based activated carbon in recent decades is reviewed, including raw material selection, preparation process and mechanism, modification methods, application status, and regeneration methods. Finally, the existing problems and future research directions in the field of coal-based activated carbon are proposed, which has great significance for realizing the high valueadded utilization of coal resources.

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“…On the other hand, coal slime (CS) produced from coal mining and washing process is also a kind of solid waste, which is produced worldwide in vast quantities [ 22 , 23 ]. Compared to SS, CS has lower ash content and higher fixed carbon content.…”

Section: Introductionmentioning

confidence: 99%

Co-hydrothermal carbonization of sewage sludge and coal slime for clean solid fuel production: a comprehensive assessment of hydrochar fuel characteristics and combustion behavior

Yang

Wang

Guo

et al. 2022

Biomass Conv. Bioref.

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The fuel characteristics and combustion behavior of the hydrochar obtained from the co-hydrothermal carbonization (co-HTC) of sewage sludge (SS) and coal slime (CS) were investigated. The results showed that a synergistic effect existed during the co-HTC process of SS and CS, which could make the mass yield, high heating value, carbon retention rate, energy recovery efficiency, fuel ratio, and energy balance of the hydrochar increase by 1.87–6.52%, 4.04–17.54%, 7.52–16.80%, 4.20–19.59%, 7.58–25.45%, and 35.26–40.08%, respectively. Furthermore, thermogravimetric and derivative thermogravimetry analysis indicated that the weight loss of co-hydrochar was significantly increased with increasing of CS ratio, and it was 38.39%, 48.14%, and 58.08% when the CS ratio was 25%, 50%, and 75% respectively. Adding CS during HTC could significantly improve the combustion performance of the hydrochar. Moreover, SS and CS were efficiently converted into solid fuels with better combustion performance and reactivity. Graphical Abstract

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Coal slime waste: a promising precursor to develop highly porous activated carbon for supercapacitors

Cited by 15 publications

References 38 publications

Coal-Derived Activated Carbon for Electrochemical Energy Storage: Status on Supercapacitor, Li-Ion Battery, and Li–S Battery Applications

Coal-Derived Activated Carbon for Electrochemical Energy Storage: Status on Supercapacitor, Li-Ion Battery, and Li–S Battery Applications

Review on Coal-Based Activated Carbon: Preparation, Modification, Application, Regeneration, and Perspectives

Co-hydrothermal carbonization of sewage sludge and coal slime for clean solid fuel production: a comprehensive assessment of hydrochar fuel characteristics and combustion behavior

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