One-pot facile route to fabricate the precursor of sulfonated graphene/N-doped mesoporous carbons composites for supercapacitors

Chen, Peng; Yang, Chao; He, Zi; Guo, Kunkun

doi:10.1007/s10853-018-3122-6

Cited by 14 publications

(13 citation statements)

References 42 publications

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“…Graphene is a two-dimensional carbon nanomaterial composed of hexagonal carbon atoms in a honeycomb lattice (Huang et al, 2011;Bayle et al, 2015). With its excellent physical and chemical properties, it has shown broad application prospects in the field of energy storage and conversion (Chen P. et al, 2018;Lu et al, 2018). Interest in the study of graphene has not been attenuated after Novoselov and Geim prepared a single layer of graphene by mechanical stripping at room temperature, breaking the prediction that quasi-two-dimensional crystal materials could not exist alone at room temperature (Novoselov et al, 2004).…”

Section: Mno 2 /Graphene Compositesmentioning

confidence: 99%

MnO2/Carbon Composites for Supercapacitor: Synthesis and Electrochemical Performance

et al. 2020

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As an emerging energy storage device, the supercapacitor with high energy density, fast charging/discharging, and good cycle stability has aroused great interest. The performance of supercapacitors mainly depend on the electrode material. Manganese dioxide (MnO 2) has emerged as one of the most promising electrode materials for high theoretical specific capacitance, wide potential range, high electrochemical activity, and environmental friendliness. However, its deteriorated volume expansion and inherently low conductivity limit its development and application in supercapacitors. To circumvent the mentioned issues, the porous, thin film, or layered composite materials were prepared to enhance the electrical conductivity and specific surface area of MnO 2. Carbon materials are the ideal choice to compound with MnO 2 owing to their low electrical resistance, significant thermal stability, large specific surface area, and porosity. Up to now, several kinds of MnO 2 /carbon composites as supercapacitor electrodes have been designed and fabricated. Herein, we give a concise review of the latest researches on MnO 2 /carbon supercapacitor electrodes, focusing on the fabrication strategies and analyzing the influencing factors of electrochemical performance of MnO 2 /carbon materials. An outlook on the possible development directions in future of designing high-performance MnO 2 /carbon materials for the current challenges is also provided.

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Section: Mno 2 /Graphene Compositesmentioning

confidence: 99%

MnO2/Carbon Composites for Supercapacitor: Synthesis and Electrochemical Performance

et al. 2020

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“…PA (1.56 mL), aniline (0.74 mL), acetylene black (20 mg), CFs (48 mg), MCs (96 mg), and H 2 O (9.7 mL) were added into autoclave together with stirring 20 min below 5 °C, where MCs was obtained by the previously reported procedure. [ 23 ] The following was the same with the above procedure, and the prepared gel marked as PFMH attains a density ( ρ PFMH ) up to 181.5 mg cm −3 .…”

Section: Methodsmentioning

confidence: 99%

A Hydrothermal Strategy to Fabricate Carbons‐Doped Polyaniline Hydrogels with Separation‐Free for Flexible All‐Solid‐State Supercapacitors

Chen

Yang

Guo

2021

Macro Materials & Eng

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Carbon‐doped polyaniline (PANI) hydrogels (PFMH) are fabricated by a facile hydrothermal strategy that aniline monomers are in situ polymerized on mesoporous carbons (MC) and carbon fibers (CF) with phytic acids as both cross‐linkers and dopants. Likewise, MC and CF can provide heterogeneous active sites to initiate the polymerization, acting as the skeletons within multi‐dimensional interconnected channel structures. First‐principles density functional theory calculations show that the interactions between different bases of PANI and MC/CF are all adsorptive prone to possess the separation‐free structure, but the adsorptive interactions between different bases and MC are significantly stronger than those of CF. Therefore, MC would be tightly anchored by PANI chains to improve the mechanical strength, while CF can provide favorable conductivity interconnected network skeletons. As such, the electrical conductivity and fracture strength of PFMH are measured high up to 13.32 S m−1 and 233.4 kPa at the fracture deformation (54.7%), respectively. PFMH as supercapacitor (SC) electrodes can achieve the gravimetric specific capacitance of 637.9 F g−1 at 1 A g−1. In particular, the as‐fabricated flexible all‐solid‐state SCs can maintain normal operation under various deformation conditions, showing the great potential to become an advanced power device for wearable electronics.

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“…The performances of supercapacitor mainly depend on the structure and property of electrode materials, including specific surface area (SSA), conductivity, structure stability, and electrochemical reaction activity 4,5 . At present, most of the researches have been focused on introducing metal oxides, such as RuO 2 , Fe 3 O 4 , and MnO 2 , conductive polymer, carbon nanomaterials, such as carbon nanotubes, graphene, porous carbon, and their composites 1,6‐12 . For example, the porous and hollow carbon spheres have been widely investigated as electrodes materials because of their high SSA, excellent structural stability, and good conductivity, which are advantageous for improving the contact of the electrode with electrolyte and providing much shorter transport pathways for electrolyte ions and electrons 13,14 .…”

Section: Introductionmentioning

confidence: 99%

“…4,5 At present, most of the researches have been focused on introducing metal oxides, such as RuO 2 , Fe 3 O 4 , and MnO 2 , conductive polymer, carbon nanomaterials, such as carbon nanotubes, graphene, porous carbon, and their composites. 1,[6][7][8][9][10][11][12] For example, the porous and hollow carbon spheres have been widely investigated as electrodes materials because of their high SSA, excellent structural stability, and good conductivity, Yingying Ma and Jinyong Tian contributed equally to this work.…”

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confidence: 99%

Interconnected hierarchical porous carbon synthesized from freeze‐dried celery for supercapacitor with high performance

Tian

Liang

et al. 2021

Int J Energy Res

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With the increasing challenge of energy, resource, and environment, it is highly desired to develop renewable energy and corresponding efficient energy storage technologies basing on reproducible materials. Recently, using biomass and biotechnology to prepare electrode material for energy storage devices is gaining growing attention. Here, we use biomass, celery, as a material source and developed a new way to prepare highly qualified graphitized porous carbon. Besides, instead of direct carbonization, the celery is first freeze-dried to protect the original elements and structure of biomass. Furthermore, to sculpture more nanoscale pores in the produced material, the following carbonization process is also greatly modified by investigating proper carbonization temperature and time. Therefore, the interconnected hierarchical porous structure can be formed based on the protected original pores with size of micrometers and the newly formed pores with size of nanometers. The resulted interconnected hierarchical porous carbon is used to prepare supercapacitor electrode and exhibit excellent energy storage properties. Without any extra activating or doping process, the specific capacitance of the resulted electrode reached 350.0 F g −1 at 1 A g −1 , which is 5.28 times of that of directly carbonized material. And the power density reached 8.0 kW kg −1 with the energy density maintaining 16.3 Wh kg −1 . K E Y W O R D Sbiomass, eco-friendly, freeze-drying, porous carbon, supercapacitor | INTRODUCTIONSupercapacitors have attracted great attention because of their large specific capacitance(C s ), high power density, and excellent cycling stability. [1][2][3] The performances of supercapacitor mainly depend on the structure and property of electrode materials, including specific surface area (SSA), conductivity, structure stability, and electrochemical reaction activity. 4,5 At present, most of the researches have been focused on introducing metal oxides, such as RuO 2 , Fe 3 O 4 , and MnO 2 , conductive polymer, carbon nanomaterials, such as carbon nanotubes, graphene, porous carbon, and their composites. 1,[6][7][8][9][10][11][12] For example, the porous and hollow carbon spheres have been widely investigated as electrodes materials because of their high SSA, excellent structural stability, and good conductivity, Yingying Ma and Jinyong Tian contributed equally to this work.

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One-pot facile route to fabricate the precursor of sulfonated graphene/N-doped mesoporous carbons composites for supercapacitors

Cited by 14 publications

References 42 publications

MnO2/Carbon Composites for Supercapacitor: Synthesis and Electrochemical Performance

MnO2/Carbon Composites for Supercapacitor: Synthesis and Electrochemical Performance

A Hydrothermal Strategy to Fabricate Carbons‐Doped Polyaniline Hydrogels with Separation‐Free for Flexible All‐Solid‐State Supercapacitors

Interconnected hierarchical porous carbon synthesized from freeze‐dried celery for supercapacitor with high performance

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