Activated high specific surface area carbon aerogels for EDLCs

Liu, Nianping; Shen, Jun; Liu, Dong

doi:10.1016/j.micromeso.2012.09.009

Cited by 107 publications

(44 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Aerogel with a cross-linked three-dimensional network structure has attracted intensive attentions from academic communities and industrial fields, due to its low density [1][2][3], high specific surface area [4], high porosity [5], excellent thermal insulation [6] and extraordinary sound insulation ability [7]. It would be a great promising substance as adsorbing [8], heat barrier [9], acoustic insulation [10] or catalyst carrier [11].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of cellulose aerogel from wheat straw with strong absorptive capacity

Li¹,

Wan²,

Lu³

et al. 2014

Front. Agr. Sci. Eng.

View full text Add to dashboard Cite

An effectively mild solvent solution containing NaOH/PEG was employed to dissolve the cellulose extracted from the wheat straw. With further combined regeneration process and freeze-drying, the cellulose aerogel was successfully obtained. Scanning electron microscope, X-ray diffraction technique, Fourier transform infrared spectroscopy, and Brunauer-Emmett-Teller were used to characterize this cellulose aerogel of low density (about 40 mg$cm ). Additionally, with a hydrophobic modification by trimethylchlorosilane, the cellulose aerogel showed a strong absorptive capacity for oil and dye solutions.

show abstract

Section: Introductionmentioning

confidence: 99%

Fabrication of cellulose aerogel from wheat straw with strong absorptive capacity

Li¹,

Wan²,

Lu³

et al. 2014

Front. Agr. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…In this method, an organic precursor aerogel is pyrolyzed in a typical thermal treatment program. [26][27][28][29][30] The polymerization mechanism of RF system is reported to include two main steps: (i) formation of resorcinol anions by hydrogen abstraction (enhanced by OH¯) and formaldehyde addition to obtain hydroxymethyl derivatives; and (ii) condensation of the hydroxymethyl derivatives and cluster growth (catalyzed by H + ). Resorcinol/formaldehyde 11 , resorcinol/furfural 12 , cresol/formaldehyde 13 , phenolic novolak/furfural 14 , novolak/methyl ethyl ketone 15,16 , novolak/hexamethylenetetramine 17 , phenolic resoles/methylolated melamine 18 , phenol/formaldehyde 19 , phenol/furfural 20 , polyurethane based organic aerogels 21 , and poly(vinyl chloride) based 22 organic aerogels are some of the most studied organic systems, used as the precursor for the preparation of carbon aerogels.…”

Section: Conventional Pyrolyzed Carbon Aerogelsmentioning

confidence: 99%

“…126 Energy is stored in supercapacitors through separation of charge across the electrode/electrolyte interface. 26 Moreover, initial pH of RF solution, carbonization temperature and R/C ratio, are three more parameters, which affect specific surface area of CAs. 127 High current-density, controllable pore size, low electrical resistance, low detection limits and low dependency on convective transport are some advantages of CAs, which consist of the conductor ordered regions separated by disordered insulator parts.…”

Section: Electrochemical Properties and Applicationsmentioning

confidence: 99%

Self-assembled and pyrolyzed carbon aerogels: an overview of their preparation mechanisms, properties and applications

Allahbakhsh

Bahramian

2015

Nanoscale

View full text Add to dashboard Cite

An overview of the synthesis conditions and mechanisms for the fabrication of different types of carbon aerogels, as well as the structural and functional properties of these materials, is presented here. In this overview, carbon aerogels are classified into three major categories: (i) conventional pyrolyzed organic-based carbon aerogels, which are products of the pyrolysis process of organic aerogels; (ii) self-assembled carbon aerogels, which are products of a reduction process; and (iii) nanocomposite carbon aerogels. Synthesis mechanisms for the sol-gel process of organic aerogels are reviewed using different mechanisms suggested in the literature. Moreover, the overall fabrication process of self-assembled carbon aerogels (graphene and carbon nanotube aerogels) is covered and the suggested mechanism for the gelation process of self-assembled carbon aerogels during the reduction process is investigated using reported mechanisms. The structural performance and functional properties (electrochemical and thermal properties) of different types of carbon aerogels are covered in detail. Moreover, different structural features of carbon aerogels and the influence of synthesis conditions on these structural characteristics are assessed and compared. Based on the literature results covered in this review paper, carbon aerogels are perfect candidates for the fabrication of ultra-low density supercapacitors, as well as thermal insulating materials.

show abstract

“…Carbon aerogels (CAs) are special organic materials with high mesoporous volume, low density, continuous porosities and high specific surface area, owing to their unique 3D nano-network structures. [27][28][29][30] These physical characteristics give electrochemical, thermal and catalytic properties with wide applications in environmental fields. Wu et al found that CA particle electrodes were efficient for discoloration of RBRX dye(C 19 H 10 O 7 N 6 C l2 S 2 Na 2 ).…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization and environmental application of the composite electrode TiO₂‐NTs/SnO₂—Sb with carbon aerogels

Liu

Chen

et al. 2019

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND Research on electrode materials with high electrochemical activity is of great importance for the electrochemical oxidation technique. In this work, an electrode comprising titanium dioxide nanotubes with tin oxide antimony (TiO2‐NTs/SnO2—Sb) with carbon aerogels (TSS‐CAs) was fabricated and used to degrade three isomers of dihydroxybenzenes. RESULTS It was observed that the TSS‐0.5%CAs electrode prepared with 0.5 wt% CAs possessed prominent pore structure and a larger specific surface area of 180.83 m2 g−1. Electrochemical measurements revealed that the TSS‐0.5%CAs electrode had enhanced electrochemical activity, larger electroactive area, and higher oxygen evolution potential. Relevant operational parameters including initial contaminant concentration, pH, electrolyte concentration and current density had significant effects on the electrocatalytic performance of the TSS‐CAs electrode. CONCLUSION It was demonstrated that a proper content of carbon aerogel could improve the structure and electrochemical performance of the TSS‐CAs electrode. The removal of catechol was higher than that of hydroquinone and resorcinol during electrochemical oxidation, due to its lower Gibbs free energy barriers. Oxidation of intermediates of dihydroxybenzenes by the TSS‐CAs electrode also was confirmed. © 2019 Society of Chemical Industry

show abstract

Activated high specific surface area carbon aerogels for EDLCs

Cited by 107 publications

References 47 publications

Fabrication of cellulose aerogel from wheat straw with strong absorptive capacity

Fabrication of cellulose aerogel from wheat straw with strong absorptive capacity

Self-assembled and pyrolyzed carbon aerogels: an overview of their preparation mechanisms, properties and applications

Preparation, characterization and environmental application of the composite electrode TiO₂‐NTs/SnO₂—Sb with carbon aerogels

Contact Info

Product

Resources

About

Activated high specific surface area carbon aerogels for EDLCs

Cited by 107 publications

References 47 publications

Fabrication of cellulose aerogel from wheat straw with strong absorptive capacity

Fabrication of cellulose aerogel from wheat straw with strong absorptive capacity

Self-assembled and pyrolyzed carbon aerogels: an overview of their preparation mechanisms, properties and applications

Preparation, characterization and environmental application of the composite electrode TiO2‐NTs/SnO2—Sb with carbon aerogels

Contact Info

Product

Resources

About

Preparation, characterization and environmental application of the composite electrode TiO₂‐NTs/SnO₂—Sb with carbon aerogels