Template-free preparation of layer-stacked hierarchical porous carbons from coal tar pitch for high performance all-solid-state supercapacitors

Guan, Taotao; Li, Kaixi; Zhao, Jianghong; Zhao, Rijie; Zhang, Guoli; Zhang, Dongdong; Wang, Jianlong

doi:10.1039/c7ta02966g

Cited by 116 publications

(56 citation statements)

References 59 publications

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“…Besides, double template method techniques have been widely employed to synthesize HPCs, such as double soft‐template method, double hard‐template method and soft‐hard combined double template method . HPCs were successfully prepared using alumino‐silica UVM‐7 as hard template by Pérez‐Cabero et al The process was not only perplexing but also time‐consuming because some toxic reagents such as NaOH or HF might be required to remove the hard template . Chen et al successfully synthesized nanoporous carbon by effective template carbonization.…”

Section: Preparation Methods Of Carbon‐based Materialsmentioning

confidence: 99%

“…[142][143][144] HPCs were successfully prepared using alumino-silica UVM-7 as hard template by Pérez-Cabero et al 145 The process was not only perplexing but also time-consuming because some toxic reagents such as NaOH or HF might be required to remove the hard template. 146 successfully synthesized nanoporous carbon by effective template carbonization. The as-prepared sample displayed hierarchical pore size distribution, interconnected pore structure with large SSA (1596 m 2 /g), pore volume (5.93 cm 3 /g).…”

Section: Templates Carbonizationmentioning

confidence: 99%

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The synthesis and performance analysis of various biomass‐based carbon materials for electric double‐layer capacitors: A review

Lin

et al. 2019

Int J Energy Res

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Summary Biomass is one of the most promising clean energy sources. The porous carbon materials prepared by biomass as electrode materials of electric double‐layer capacitors (EDLCs) are easily available at a low price, which would greatly reduce the cost of the production. However, carbon materials made with biomass generally have many disadvantages such as low specific surface area (SSA), poor pore size structure, and difficulty to control the pore diameter, which results in the poor EDLC performance. In this paper, the prime purpose is to expose the recent progress of biomass carbon in the fields of electrode materials of EDLC. The review provides a comprehensive literature review that is focused on EDLC electrodes derived from biochar of the evidence of 181 publications published over a period of 30 years from 1989 to 2019. Various carbon materials derived from different biomass for electrode of EDLC are discussed. The most promising methods for the preparation of several biomass carbons are described in detail. Some factors such as SSA, pore size structure, surface functional groups, and electrolyte are further analyzed to discuss the effects on the electrochemical performance of the EDLC. Notably, current deficiencies and possible solutions of preparation methods of biomass carbon as electrode materials are outlined. And the future research trends in this field are prospected.

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Section: Preparation Methods Of Carbon‐based Materialsmentioning

confidence: 99%

Section: Templates Carbonizationmentioning

confidence: 99%

The synthesis and performance analysis of various biomass‐based carbon materials for electric double‐layer capacitors: A review

Lin

et al. 2019

Int J Energy Res

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“…In the third stage above 500 o C, undecomposed and unstable carbon result the rate of pyrolysis gradually decreased. It suggests that CTP can decompose from 100 o C to 900 o C and the compositions and structures of CTP can influence the pyrolysis process [27,31,32]. The SEM images of OHPC-700-2 under different magnifications are shown in Fig.…”

Section: Structural Featuresmentioning

confidence: 97%

“…CTP mainly contains plenty of polycyclic aromatic hydrocarbons and heterocyclic compounds [15], so that CTP is an ideal low cost carbon precursor based on their rich carbon content and good cost-efficiency. Furthermore, it can prepare carbon materials with different structures [25][26][27]. However, its chemical and physical properties can influence their transformation to carbons.…”

Section: Introductionmentioning

confidence: 99%

Oxygen-rich Hierarchical Porous Carbon Derived from Coal Tar Pitch for Superior Electric Double Layer Capacitor Application

Zhuang¹

2018

International Journal of Electrochemical Science

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Coal tar pitch (CTP) with a great deal of polynuclear aromatic structural units is a potential precursor for preparing porous carbon. In this paper, CTP was selected as raw material, and oxygen-rich hierarchical porous carbon (OHPC) was prepared successfully by facile one-step KOH activation, which was attributed to the H 2 O oxidation during this process. The oxygen content in hierarchical porous carbon was well above the oxygen content in CTP. Besides, possible oxidation mechanism was proposed. The influence of activation temperature and activation ratio (m KOH /m CTP) on the pore structure of OHPC was also investigated, and the largest specific surface area reached 2342 m 2 g-1. When OHPC was applied to electric double layer capacitor in the two electrode system, it shows good electrochemical performance. Its specific capacitance and energy density could reach 308 F g-1 and 8.31 Wh kg-1 in 6 M KOH solution, respectively. Meanwhile, the capacitance retention of OHPCs was up to 95.4% at 2 A g-1 after 10000 cycles. This paper not only provides a simple method of oxygen doping for porous carbon, but also achieve the green and high value-added utilization of CTP.

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“…The high specic capacitance and excellent rate performance of the HPC-DK-1.0 is ascribed to its superhigh BET surface area (S BET ¼ 1394.6 m 2 g À1 ) and welldistributed hierarchical porous structures which provide a high accessible surface for electron accommodation and convenient electrolyte-ion transportation. 47,48 Electrochemical impedance spectroscopy (Fig. 6d) was conducted to understand the capacitance mechanism.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Dicarbonyl-tuned microstructures of hierarchical porous carbons derived from coal-tar pitch for supercapacitor electrodes

et al. 2019

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Template-free preparation of layer-stacked hierarchical porous carbons from coal tar pitch for high performance all-solid-state supercapacitors

Abstract: Template-free preparation of layer-stacked hierarchical porous carbons from cheap pitch precursors for high-performance all-solid-state supercapacitors.

Cited by 116 publications

References 59 publications

The synthesis and performance analysis of various biomass‐based carbon materials for electric double‐layer capacitors: A review

The synthesis and performance analysis of various biomass‐based carbon materials for electric double‐layer capacitors: A review

Oxygen-rich Hierarchical Porous Carbon Derived from Coal Tar Pitch for Superior Electric Double Layer Capacitor Application

Dicarbonyl-tuned microstructures of hierarchical porous carbons derived from coal-tar pitch for supercapacitor electrodes

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