Cellulose-derived carbon nanofibers/graphene composite electrodes for powerful compact supercapacitors

Kuzmenko, Volodymyr; Wang, Nan; Haque, Mazharul; Naboka, Olga; Flygare, Mattias; Svensson, Krister; Gatenholm, Paul; Liu, Johan; Enoksson, Peter

doi:10.1039/c7ra07533b

Cited by 86 publications

(63 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3.4). This result corresponds to the study conducted by Kuzmenko et al [24] as the addition of graphene up to its maximum loading increased the SSA of the resultant NF. From this, it can be said that the effect of graphene in NF can be considered to occur as early as in the fabrication stage, such as the electrospinning of NF.…”

Section: Research Articlesupporting

confidence: 90%

Activated‐Carbon Nanofibers/Graphene Nanocomposites and Their Adsorption Performance Towards Carbon Dioxide

Othman

2020

Chem Eng & Technol

View full text Add to dashboard Cite

Activated‐carbon nanofibers (ACNFs) provide a relatively new, modified structure of carbon‐based adsorbents that have the ability to adsorb carbon dioxide due to their high specific surface area, wide distribution of porous structures, and high volume of active sites. In this study, cost‐effective agricultural waste‐based graphene synthesized from rice husk ashes was used as additive to enhance the ACNF properties. ACNF/graphene (gACNF) is still a relatively unexplored adsorbent. The resultant gACNF exhibited better thermal stability properties, with higher yield, larger specific surface area, and higher micropore volume. These properties are the main factors contributing to their enhanced adsorption performance towards CO2.

show abstract

Section: Research Articlesupporting

confidence: 90%

Activated‐Carbon Nanofibers/Graphene Nanocomposites and Their Adsorption Performance Towards Carbon Dioxide

Othman

2020

Chem Eng & Technol

View full text Add to dashboard Cite

show abstract

“…After activation at 800 °C, the structure of the NFs became coarser and wrinkled, with the appearance of several beads. The fiber diameter also shrank to 300–500 nm, due to the vulnerability of the surface toward the heat treatment (loss of water content) and breakage of the hydrogen bonds at increasing temperature, as reported earlier [ 47 ]. Moreover, the addition of either rGO or GRHA into the NFs further decreased diameters, to 250–400 nm (up to 50%).…”

Section: Resultssupporting

confidence: 68%

Novel Activated Carbon Nanofibers Composited with Cost-Effective Graphene-Based Materials for Enhanced Adsorption Performance toward Methane

et al. 2020

View full text Add to dashboard Cite

Various types of activated carbon nanofibers’ (ACNFs) composites have been extensively studied and reported recently due to their extraordinary properties and applications. This study reports the fabrication and assessments of ACNFs incorporated with graphene-based materials, known as gACNFs, via simple electrospinning and subsequent physical activation process. TGA analysis proved graphene-derived rice husk ashes (GRHA)/ACNFs possess twice the carbon yield and thermally stable properties compared to other samples. Raman spectra, XRD, and FTIR analyses explained the chemical structures in all resultant gACNFs samples. The SEM and EDX results revealed the average fiber diameters of the gACNFs, ranging from 250 to 400 nm, and the successful incorporation of both GRHA and reduced graphene oxide (rGO) into the ACNFs’ structures. The results revealed that ACNFs incorporated with GRHA possesses the highest specific surface area (SSA), of 384 m2/g, with high micropore volume, of 0.1580 cm3/g, which is up to 88% of the total pore volume. The GRHA/ACNF was found to be a better adsorbent for CH4 compared to pristine ACNFs and reduced graphene oxide (rGO/ACNF) as it showed sorption up to 66.40 mmol/g at 25 °C and 12 bar. The sorption capacity of the GRHA/ACNF was impressively higher than earlier reported studies on ACNFs and ACNF composites. Interestingly, the CH4 adsorption of all ACNF samples obeyed the pseudo-second-order kinetic model at low pressure (4 bar), indicating the chemisorption behaviors. However, it obeyed the pseudo-first order at higher pressures (8 and 12 bar), indicating the physisorption behaviors. These results correspond to the textural properties that describe that the high adsorption capacity of CH4 at high pressure is mainly dependent upon the specific surface area (SSA), pore size distribution, and the suitable range of pore size.

show abstract

“…The weak and broad diffraction peak of rGO exhibits the interlayer spacing between graphene and restoration of graphitic structure after the chemical reduction [34]. CNF/PEG has a peak at 23.2 • owing to the presence of PEG, while CNF/rGO has a peak of around 25.1 • , which indicates the reduction of oxygen-containing functional groups in GO structures [35]. Figure 3 shows the transmittance interruption at 405 nm, which is attributable to the specific peak of polymerization for UV-curable PU resin [12].…”

Section: Characterization Of Surface-grafted Cnfmentioning

confidence: 99%

3D Printing of UV-Curable Polyurethane Incorporated with Surface-Grafted Nanocellulose

Mohan,

Sajab,

Kaco

et al. 2019

Nanomaterials

View full text Add to dashboard Cite

The recognition of nanocellulose has been prominent in recent years as prospect materials, yet the ineffectiveness of nanocellulose to disperse in an organic solvent has restricted its utilization, especially as a reinforcement in polymer nanocomposite. In this study, cellulose has been isolated and defibrillated as cellulose nanofibrils (CNF) from oil palm empty fruit bunch (EFB) fibers. Subsequently, to enhance its compatibility with UV-curable polyurethane (PU)-based resin, the surface hydrophilicity of CNF has been tailored with polyethylene glycol (PEG), as well as reduced graphene oxide (rGO). The dispersibility of reinforced modified CNF in UV-curable PU was examined through the transmittance interruption of resin, chemical, and mechanical properties of the composite printed using the stereolithographic technique. Evidently, the enhanced compatibility of modified CNF and UV-curable PU was shown to improve the tensile strength and hardness of the composites by 37% and 129%, respectively.

show abstract

Cellulose-derived carbon nanofibers/graphene composite electrodes for powerful compact supercapacitors

Abstract: Presented freestanding carbon nanofibers/graphene composite electrodes for supercapacitors have two essential advantages: sustainable nature and high volumetric electrochemical efficiency.

Cited by 86 publications

References 57 publications

Activated‐Carbon Nanofibers/Graphene Nanocomposites and Their Adsorption Performance Towards Carbon Dioxide

Activated‐Carbon Nanofibers/Graphene Nanocomposites and Their Adsorption Performance Towards Carbon Dioxide

Novel Activated Carbon Nanofibers Composited with Cost-Effective Graphene-Based Materials for Enhanced Adsorption Performance toward Methane

3D Printing of UV-Curable Polyurethane Incorporated with Surface-Grafted Nanocellulose

Contact Info

Product

Resources

About