Nitrogen-doped hierarchical porous carbon derived from block copolymer for supercapacitor

Tong, Yan; Li, Xiaoming; Xie, Lingling; Su, Fangyuan; Li, Jingping; Sun, Guohua; Gao, Yidan; Zhang, Nian; Wei, Qiang; Chen, Cheng‐Meng

doi:10.1016/j.ensm.2016.02.005

Cited by 70 publications

(39 citation statements)

References 34 publications

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“…Ascribed to the O and N-doped in the carbon, the defects increased and the electrochemical activity improved. The polar C-N and C-O on the surface of carbon also increased the wettability of the composites and the contact area of the electrolyte (Tong et al, 2016 ; Wang et al, 2016 ). The functional groups on the carbon surface can improve the pseudocapacitance of the materials and the total specific capacitance (Sui et al, 2015 ; Zhao et al, 2017 ).…”

Section: Template Activated Methods To Prepare Ngcmentioning

confidence: 99%

Carbothermal Synthesis of Nitrogen-Doped Graphene Composites for Energy Conversion and Storage Devices

Yang

et al. 2018

Front. Chem.

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Metal oxides and carbonaceous composites are both promising materials for electrochemical energy conversion and storage devices, such as secondary rechargeable batteries, fuel cells and electrochemical capacitors. In this study, Fe3O4 nanoparticles wrapped in nitrogen-doped (N-doped) graphene nanosheets (Fe3O4@G) were fabricated by a facile one-step carbothermal reduction method derived from Fe2O3 and liquid-polyacrylonitrile (LPAN). The unique two-dimensional structure of N-doped graphene nanosheets, can not only accommodate the volume changes during lithium intercalation/extraction processes and suppress the particles aggregation but also act as an electronically conductive matrix to improve the electrochemical performance of Fe3O4 anode, especially the rate capability. What's more, by etching Fe3O4@G to remove the iron-based oxide template, porous N-doped graphene composites (NGCs) were prepared and presented abundant pore structure with high specific surface area, delivering a specific capacitance of 172 F·g−1 at 0.5 A·g−1. In this way, Fe2O3 was both template and activator to adjust the pore size of graphene. And the effect of specific surface area and pore size tuned by the Fe2O3 activator were also revealed.

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Section: Template Activated Methods To Prepare Ngcmentioning

confidence: 99%

Carbothermal Synthesis of Nitrogen-Doped Graphene Composites for Energy Conversion and Storage Devices

Yang

et al. 2018

Front. Chem.

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“…92,[106][107][108] Chen's group recently reported a self-template approach to synthesize N-doped hierarchical porous carbons by calcining polyacrylonitrile-block-PS copolymers. 109 PS, as the self-template block, promoted the generation of mesopores (6-11 nm), while micropores developed by the activation of the carbon-supply block (polyacrylonitrile) contributed to a large surface area of 2104.5 cm 2 g À1 . Inspired by such a design concept, multiple physically interlaced polymer networks with different thermostabilities (i.e., interpenetrating polymer networks) have been employed to obtain multiscale pore distributions.…”

Section: Pore Structure Regulationmentioning

confidence: 99%

Recent advances in carbon-based supercapacitors

et al. 2020

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“…However, it is difficult to fabricate carbon materials with uniform distribution of N element through this post‐treatment method, and dangerous gases are often used. Recently, facilely direct pyrolysis of N‐containing precursors, such as poly(acrylonitrile),, polyaniline, pyrrole, and melamine resin, has been applied to obtain more uniform distribution of N atoms in carbon.…”

Section: Introductionmentioning

confidence: 99%

N‐Doped Hierarchical Porous Carbon with Open‐Ended Structure for High‐Performance Supercapacitors

Cao

Zhang

et al. 2019

ChemElectroChem

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N-doped hierarchical porous carbon with an open-ended nanostructures were prepared through activating hollow carbon spheres (HCS), which were synthesized by using the selfassembled amphiphilic block copolymer polystyrene-b-poly(4vinyl pyridine) (PS-b-P4VP) as template and pyrrole as carbon and nitrogen source. Through chemical activation with KOH, the original close-ended HCS became open-ended nanostructures (denoted as A-HCS). This unique structure possesses several important properties as electrode for application in supercapacitors: (a) large surface area (1583 m 2 /g) and pore volume (3.82 cm 3 /g), (b) hierarchical porous carbon with small size (< 100 nm) and thin curved walls (thickness < 20 nm), (c) high N content (6.73 at%). Compared with the close-ended HCS, the open-ended A-HCS exhibits better performance. The A-HCS electrode presents a high specific capacitance (284 F/g at 0.2 A/ g), good rate capability (70 % retention as the current density increased from 0.2 to 30 A/g), and superior cycling stability (96 % retention after 5000 cycles at 10 A/g). These results demonstrate that the N-doped hierarchical porous carbon material with open-ended nanostructure represents an alternative promising candidate as an efficient electrode material for supercapacitors.

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Nitrogen-doped hierarchical porous carbon derived from block copolymer for supercapacitor

Cited by 70 publications

References 34 publications

Carbothermal Synthesis of Nitrogen-Doped Graphene Composites for Energy Conversion and Storage Devices

Carbothermal Synthesis of Nitrogen-Doped Graphene Composites for Energy Conversion and Storage Devices

Recent advances in carbon-based supercapacitors

N‐Doped Hierarchical Porous Carbon with Open‐Ended Structure for High‐Performance Supercapacitors

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