New perspectives in SWCNT applications: Tuball SWCNTs. Part 1. Tuball by itself—All you need to know about it

Predtechenskiy, M. R.; Хасин, А. В.; Bezrodny, Alexander E.; Bobrenok, Oleg; Dubov, D. Yu.; Muradyan, V. E.; Saik, Vladimir O.; Smirnov, Sergei

doi:10.1016/j.cartre.2022.100175

Cited by 25 publications

(33 citation statements)

References 96 publications

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“…SS304 sheets (thickness: 0.3 mm) were used as a current collector for this study, and the same was modified by a 20 μm thin coating of SWCNT to prevent the corrosion and enhance the hydrogen evolution overpotential in aqueous electrolyte medium. A SWCNT suspension (0.5 wt % SWCNT) was prepared in N -methylpyrrolidone (NMP) solvent under 1 h sonication, where 1 wt % of polyvinylpyrrolidone (PVP) surfactant was used as a dispersion stabilizer . Before SWCNT coating, the SS304 sheets were thoroughly polished by emery paper and degreased by washing with isopropanol.…”

Section: Methodsmentioning

confidence: 99%

High-Performance and Scalable Aqueous Na-Ion Batteries Comprising a Co-Prussian Blue Analogue Framework Positive Electrode and Sodium Vanadate Nanorod Negative Electrode for Solar Energy Storage

Naskar

Debnath

Biswas

et al. 2023

ACS Appl. Energy Mater.

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A unique configuration of aqueous Na-ion batteries is investigated for solar energy storage, where single-wall carbon nanotube (SWCNT)-coated stainless steel (SS304), Co-Prussian blue analogue (Co-PBA/Na 2 CoFe(CN) 6 ), and sodium vanadate (NVO/NaV 3 O 8 ) nanorods are employed as a current collector, positive active material, and negative active material, respectively. The SWCNT coverage on SS radically obstructs the metallic corrosion under anodic polarization and also enhances the electrolyte stability window by preventing direct contact between the metal substrate and electrolyte. Both the positive and negative materials are structurally analyzed by Rietveld refinement of powder X-ray diffraction data. The Co-PBA framework structure demonstrates one-dimensional channels with ∼5.3 and 5.1 Å widths along [100] and [011], respectively, whereas the layered NVO depicts an interlayer spacing of ∼4.2 Å for facile Na-ion transportations. Resultantly, the high diffusion coefficients of Na-ions in Co-PBA and NVO are achieved as 1.6 × 10 −13 and 2.0 × 10 −11 cm 2 s −1 , respectively. Both Co-PBA and NVO exhibit a diffusioncontrolled Faradaic charge storage mechanism, which has been demonstrated by cyclic voltammetry. The Co-PBA provides 122 mAh g −1 specific capacity at 1C rate, which is the highest reported value in aqueous medium with low-cost current collectors. The electrochemical performance testing of NaV 3 O 8 is first described by us, explicitly for the negative electrode, and it delivers 83 mAh g −1 specific capacity at 1C. The 1.5 V silica gel-based Co-PBA//NVO full cell is fabricated with mass balancing, which shows higher cell voltage by maximizing the water splitting window. The full cell delivers a specific capacity of 141 mAh g −1 (@ 1C), an energy density of 211 Wh kg −1 (@ 250 W kg −1 ), a power density of 2466 W kg −1 (@ 94 Wh kg −1 ), and good durability (80% capacity retention @ 5C) up to 500 cycles. A 3 V/5 mAh rated prototype device is assembled, and it delivers satisfactory solar energy storage performances under 1 week of continuous operation.

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Section: Methodsmentioning

confidence: 99%

High-Performance and Scalable Aqueous Na-Ion Batteries Comprising a Co-Prussian Blue Analogue Framework Positive Electrode and Sodium Vanadate Nanorod Negative Electrode for Solar Energy Storage

Naskar

Debnath

Biswas

et al. 2023

ACS Appl. Energy Mater.

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“…The carbon nanotubes selected for this study were SWCNT Tuball TM (OCSIAl, Luxembourg) with a carbon content of 75% [ 28 , 29 ]. The selection was based on a former study comparing different kinds of CNTs [ 9 ].…”

Section: Methodsmentioning

confidence: 99%

Influence of Polyvinylpyrrolidone on Thermoelectric Properties of Melt-Mixed Polymer/Carbon Nanotube Composites

et al. 2023

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For thermoelectric applications, both p- and n-type semi-conductive materials are combined. In melt-mixed composites based on thermoplastic polymers and carbon nanotubes, usually the p-type with a positive Seebeck coefficient (S) is present. One way to produce composites with a negative Seebeck coefficient is to add further additives. In the present study, for the first time, the combination of single-walled carbon nanotubes (SWCNTs) with polyvinylpyrrolidone (PVP) in melt-mixed composites is investigated. Polycarbonate (PC), poly(butylene terephthalate) (PBT), and poly(ether ether ketone) (PEEK) filled with SWCNTs and PVP were melt-mixed in small scales and thermoelectric properties of compression moulded plates were studied. It could be shown that a switch in the S-value from positive to negative values was only possible for PC composites. The addition of 5 wt% PVP shifted the S-value from 37.8 µV/K to −31.5 µV/K (2 wt% SWCNT). For PBT as a matrix, a decrease in the Seebeck coefficient from 59.4 µV/K to 8.0 µV/K (8 wt% PVP, 2 wt% SWCNT) could be found. In PEEK-based composites, the S-value increased slightly with the PVP content from 48.0 µV/K up to 54.3 µV/K (3 wt% PVP, 1 wt% SWCNT). In addition, the long-term stability of the composites was studied. Unfortunately, the achieved properties were not stable over a storage time of 6 or 18 months. Thus, in summary, PVP is not suitable for producing long-term stable, melt-mixed n-type SWCNT composites.

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“…The impurity in Tubull samples includes metal nanoparticles as well as other carbonous structures (Fig. 1 ) 38 . Raman measurements were carried out using Renishaw In-Via Raman Microscope with laser excitation of 532 nm, a spot size of 1–2 μm, laser power of 5 mW, and powder density of 1.6 mW/µm 2 .…”

Section: Methodsmentioning

confidence: 99%

Radial-tangential mode of single-wall carbon nanotubes manifested by Landau regulation: reinterpretation of low- and intermediate-frequency Raman signals

Hembram

Kim

Lee

et al. 2023

Sci Rep

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The low-frequency Raman signals of single-wall carbon nanotubes (SWNTs), appearing in the range of 100–300 cm−1, have been interpreted as radial-breathing mode (RBM) comprising pure radial Eigenvectors. Here, we report that most of the low-frequency and intermediate-frequency signals of SWNTs are radial-tangential modes (RTMs) coexisting radial and tangential Eigenvectors, while only the first peak at the low-frequency side is the RBM. Density functional theory simulation for SWNTs of ~ 2 nm in diameter shows that dozens of RTMs exhibit following the RBM (~ 150 cm−1) up to G-mode (~ 1592 cm−1) in order with Landau regulation. We specify the RBM and the RTM on Raman spectra obtained from SWNTs, where both appear as prominent peaks between 149 and 170 cm−1 and ripple-like peaks between 166 and 1440 cm−1, respectively. We report that the RTMs have been regarded as RBM (~ 300 cm−1) and ambiguously named as intermediate-frequency mode (300–1300 cm−1) without assignment. The RTMs gradually interlink the RBM and the G-mode resulting in the symmetric Raman spectra in intensity. We reveal high-resolution transmission microscope evidence for a helical structure of SWNTs, informing the typical diameter of commercial SWNTs to be 1.4–2 nm.

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New perspectives in SWCNT applications: Tuball SWCNTs. Part 1. Tuball by itself—All you need to know about it

Cited by 25 publications

References 96 publications

High-Performance and Scalable Aqueous Na-Ion Batteries Comprising a Co-Prussian Blue Analogue Framework Positive Electrode and Sodium Vanadate Nanorod Negative Electrode for Solar Energy Storage

High-Performance and Scalable Aqueous Na-Ion Batteries Comprising a Co-Prussian Blue Analogue Framework Positive Electrode and Sodium Vanadate Nanorod Negative Electrode for Solar Energy Storage

Influence of Polyvinylpyrrolidone on Thermoelectric Properties of Melt-Mixed Polymer/Carbon Nanotube Composites

Radial-tangential mode of single-wall carbon nanotubes manifested by Landau regulation: reinterpretation of low- and intermediate-frequency Raman signals

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