In-situ catalytic conversion of coal pyrolysis gas to nanoporous carbon rods and superior sodium ion storage performance

Wang, Kunfang; Qian, Juan; Sun, Fei; Tian, Ze; Gao, Jihui; Zhao, Guangbo

doi:10.1016/j.fuel.2020.118782

Cited by 18 publications

(5 citation statements)

References 61 publications

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“…The performance of the coal-based anode prepared by the Flash Joule Heating method also exhibits certain advantages compared to other heating methods for coal-based anode preparation (Table S1). − Such long cycle life is mainly due to the wide interlayer spacing of the outer carbon layer and the carbon mesh structure formed through Joule heat welding, which can reduce strain during cycling.…”

Section: Results and Discussionmentioning

confidence: 99%

Rapid Carbonization of Anthracite Coal via Flash Joule Heating for Sodium Ion Storage

Dong,

Song,

Fang

et al. 2024

ACS Appl. Energy Mater.

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Anthracite coal holds great promise as a prospective anode material for sodium ion batteries. However, traditional preparation methods suffer from prolonged calcination time and significant energy consumption, impeding high-throughput synthesis and structural control of anthracite coal. To address these challenges, we propose an emerging rapid carburization method for anthracite coal utilizing flash joule heating, which enables the removal of noncarbon components within one second at an ultrafast heating rate. Under a jolt of electricity, the prepared anthracite coal exhibits a turbostratic graphite-encased porous carbon structure with larger interlayer spacing than that achieved through high-temperature furnace annealing. The anthracite coal prepared via flash joule heating demonstrates high reversible capacity (209 mAh g −1 at 0.05 A g −1 ) and significantly enhanced rate capability (reaching 115 mAh g −1 at 1 A g −1 ), with no capacity decay observed after 500 cycles in a sodium-ion half-cell. These findings highlight the potential of flash joule heating in rapid and efficient synthesis of anthracite coal, offering new possibilities for the development of high-performance anode materials in the next generation of sodium-ion batteries.

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Section: Results and Discussionmentioning

confidence: 99%

Rapid Carbonization of Anthracite Coal via Flash Joule Heating for Sodium Ion Storage

Dong,

Song,

Fang

et al. 2024

ACS Appl. Energy Mater.

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“…It has the largest thermal weight loss due to maximum gaseous release in the temperature range of 450 °C to 600 °C [28] . The as‐released gas is mainly composed of light hydrocarbons, nitrogen‐containing hydrocarbons, CO 2 , CO and H 2 [28–30] . Hence, we design that the first‐stage zone stays at 600 °C for 90 mins in order to slowly release the gas derived from coal pyrolysis.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of N‐Doped Porous Carbon/Carbon Micro‐Nanotubes/Ni_xCo_yO_z Nanosheets as a High‐Capacity Electrode Material for Supercapacitors

Cong

Yang²,

et al. 2021

ChemistrySelect

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The N‐doped porous carbon (NPC) /carbon micro‐nanotubes (CMNT) /NixCoyOz nanosheets with rich mesopores and 1.37 wt% nitrogen doping are successfully synthesized by a pyrolysis‐ionization‐precipitation combination process, using coal‐based polyaniline and nickelocene as original materials. Therein, most of the CMNT are upright CMTs and worm‐like curved CNTs, and a few are bamboo‐like tubes or carbon nanofibers. Moreover, many flower‐like aggregates assembled by spinel NiCo2O4 nanosheets are anchored on the surface of the NPC and CMNT. The NPC/CMNT/NixCoyOz exhibits a high specific capacitance and cycling stability, attributed to the large BET specific surface area (485 m2/g), suitable BET average pore size (2.3 nm), good hydrophilicity and wettability, and synergistic effects among three components. The assembled NPC/CMNT/NixCoyOz//AC asymmetric supercapacitor also demonstres a high specific capacitance of 120 F g−1 at a current density of 1 A g−1 and a high energy density of 16.7 Wh kg−1 at a power density of 500 W kg−1.

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“…55,56 Moreover, the gas from coal was successfully catalyzed to nanoporous carbon rods, whose capacity could be retained atabout 181 mA h g −1 even after 2000 cycles. 57 It should be noted that the coal-based samples were composed of sp 2 carbon, while nanopores were observed on the surface of carbon materials, bringing about the increased rate properties (109 mA h g −1 , at 3.7 A g −1 ). 58 Clearly, the increased specific surface area could induce the evolution of active sites, further broadening the energy distributions.…”

Section: Sodium-ion Batteriesmentioning

confidence: 98%

“…It could be deduced that control of the internal structure of coal with a high coalification degree got out of hand. Furthermore, the materials from sub-bituminous coal exhibit a capacity of 291 mA h g –1 at 20 mA g –1 with a CE of 79.5%. , Moreover, the gas from coal was successfully catalyzed to nanoporous carbon rods, whose capacity could be retained atabout 181 mA h g –1 even after 2000 cycles . It should be noted that the coal-based samples were composed of sp 2 carbon, while nanopores were observed on the surface of carbon materials, bringing about the increased rate properties (109 mA h g –1 , at 3.7 A g –1 ) .…”

Section: Sodium-ion Batteriesmentioning

confidence: 99%

Coal-Based Electrodes for Energy Storage Systems: Development, Challenges, and Prospects

Chen

Zeng

et al. 2022

ACS Appl. Energy Mater.

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Compared to the traditional chemical process, the direct application of natural minerals has captured numerous attention because of a series of merits, such as low cost, rich resources, and so forth. Fascinated by the considerable chemical properties and interlayer distances, carbon materials have been widely applied in energy storage systems (ESSs). As the richest mineral, coal is always used as the fuel, accompanying with inferior values. Fascinatingly, significant carbon materials with different internal structures and morphologies could be prepared using coal and coal tar pitch (CTP), triggering plenty of research activities on "short-process" application of coal-based materials. Interestingly, based on the rank of coal, it could be divided into lignite, anthracite, and bituminous, which exhibited different energy storage functions. Moreover, the existence of trace metal elements enables it to be designed as catalysts. The use of coal-based materials in alkali ion batteries (lithium-/sodium-/potassium-ion batteries), Zn−air batteries, and supercapacitors is reviewed herein. The relative applications of various kinds of precursors (coal powder, CTP, and coal) in ESSs are summarized in detail, and the limitations of coal-based materials are further discussed in depth. This review is expected to offer insights about their developments in future, while shedding light on the challenges in using coal-based electrodes and their solutions.

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In-situ catalytic conversion of coal pyrolysis gas to nanoporous carbon rods and superior sodium ion storage performance

Cited by 18 publications

References 61 publications

Rapid Carbonization of Anthracite Coal via Flash Joule Heating for Sodium Ion Storage

Rapid Carbonization of Anthracite Coal via Flash Joule Heating for Sodium Ion Storage

Synthesis of N‐Doped Porous Carbon/Carbon Micro‐Nanotubes/Ni_xCo_yO_z Nanosheets as a High‐Capacity Electrode Material for Supercapacitors

Coal-Based Electrodes for Energy Storage Systems: Development, Challenges, and Prospects

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In-situ catalytic conversion of coal pyrolysis gas to nanoporous carbon rods and superior sodium ion storage performance

Cited by 18 publications

References 61 publications

Rapid Carbonization of Anthracite Coal via Flash Joule Heating for Sodium Ion Storage

Rapid Carbonization of Anthracite Coal via Flash Joule Heating for Sodium Ion Storage

Synthesis of N‐Doped Porous Carbon/Carbon Micro‐Nanotubes/NixCoyOz Nanosheets as a High‐Capacity Electrode Material for Supercapacitors

Coal-Based Electrodes for Energy Storage Systems: Development, Challenges, and Prospects

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Synthesis of N‐Doped Porous Carbon/Carbon Micro‐Nanotubes/Ni_xCo_yO_z Nanosheets as a High‐Capacity Electrode Material for Supercapacitors