Radially aligned CNTs derived carbon hollow cylinder architecture for efficient energy storage

Tripathi, Prashant; Bhatnagar, Ashish; Ramesh, A.; Vishwakarma, Alok K.; Singh, Sweta; Bailmare, Deepa B.; Deshmukh, Abhay D.; Srivastava, O. N.

doi:10.1016/j.electacta.2020.136650

Cited by 9 publications

(7 citation statements)

References 61 publications

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“…It clearly showed that two prominent peaks, namely D-band (~1350 cm −1 ) and G-band (~1590 cm −1 ), were observed on all samples [41]. The D-band (disordered band) can be ascribed to the breathing mode of sp 2 rings from the sp 3 defect sites and arises due to defect/disorder present in the graphitic materials [42]. The G band was attributed to active in-plane atomic displacement E2g mode [43].…”

Section: Resultsmentioning

confidence: 94%

N8− Polynitrogen Stabilized on Nitrogen-Doped Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction

Yao

Fan

et al. 2020

Catalysts

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In this work, non-traditional metal-free polynitrogen chain N8− deposited on a nitrogen-doped carbon nanotubes (PN-NCNT) catalyst was successfully synthesized by a facile cyclic voltammetry (CV) approach, which was further tested in an oxygen reduction reaction (ORR). The formation of PN on NCNT was confirmed by attenuated total reflectance–Fourier transform infrared spectroscopy (ATR-FTIR) and Raman spectroscopy. Partial positive charge of carbon within NCNT facilitated electron transfer and accordingly induced the formation of more PN species compared to CNT substrate as determined by temperature-programmed decomposition (TPD). Rotating disk electrode (RDE) measurements suggested that a higher current density was achieved over PN-NCNT than that on PN-CNT catalyst, which can be attributed to formation of the larger amount of N8− on NCNT. Kinetic study suggested a four-electron pathway mechanism over PN-NCNT. Moreover, it showed long stability and good methanol tolerance, which indicates its great potential application. This work provides insights on designing and synthesizing non-traditional metal-free catalysts for ORR in fuel cells.

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Section: Resultsmentioning

confidence: 94%

N8− Polynitrogen Stabilized on Nitrogen-Doped Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction

Yao

Fan

et al. 2020

Catalysts

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“…Recent studies suggest that cost‐effective and high‐durability energy storage devices can be developed with the use of carbon materials. Interestingly, porous carbon materials are a prominent fit for electrochemical energy storage applications 2 . Owing to the exceptional chemical stability of carbon materials, it is possible to deploy suitable additives to enhance their capacitance performance.…”

Section: Introductionmentioning

confidence: 99%

“…Interestingly, porous carbon materials are a prominent fit for electrochemical energy storage applications. 2 Owing to the exceptional chemical stability of carbon materials, it is possible to deploy suitable additives to enhance their capacitance performance. Furthermore, large-scale production of carbon materials from biomass precursors is one of the key methodologies envisaged for utilizing biowastes into cost-effective energy harvesting materials, which will help to protect the ecosystem from biowaste accumulation.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical capacitance and hydrogen adsorption behavior of activated carbon derived from cattail fiber

Achayalingam,

Basu,

Rao

et al. 2024

Energy Storage

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In this paper, we have reported the synthesis of activated carbon (AC) from biomass cattail fiber through hydrothermal carbonization, followed by chemical activation, and its electrochemical capacitance and hydrogen storage properties. The AC exhibits a Brunauer‐Emmett‐Teller (BET) surface area (SBET) of 1597.5 m2g−1, determined from the low‐pressure N2 adsorption isotherm at 77 K using a BET‐multipoint plot. The AC sample shows a reversible hydrogen adsorption capacity of 0.25 wt.% H2 (1.25 mmol H2 g−1) at 293 K and 74 atm. The capacitance performance of AC was investigated with various conductive additives such as carbon nanotubes (CNTs), carbon black (CB), and reduced graphene‐oxide (rGO). From galvanostatic charge discharge (GCD) and cyclic voltammetry (CV) measurements, the as‐derived AC with polymer binder exhibits a specific capacitance (Cs) of 245.2 F g−1 at 0.2 A g−1 and 158.1 F g−1 at 5 mV s−1. Among the investigated conductive additives, AC with CNTs in KOH electrolyte exhibit highest Cs of 326 F g−1 at 0.2 A g−1 and 173 F g−1 at 5 mV s−1. Furthermore, the symmetrical two‐electrode device fabricated using AC with CNTs (as a conductive additive) in 1 M aq. Na2SO4 electrolyte shows a Cs of 97.2 F g−1 at 0.1 A g−1. The energy and power densities of the two‐electrode device were observed to be 28 kW kg−1 and 2.64 Wh kg−1, respectively.

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“…The unique mechanical, electrical, and chemical properties of carbon nanotube (CNT) “forests” give this material an extensive range of practical applications. 1 A few of these include energy storage, 2,3 chromatography, 4,5 flexible electronics, 6 and biomedical applications. 7–9 Although many potential applications require a CNT forest coating on a rod or inside a tube, such as fluid flow applications, 10 few studies on CNT forests have been conducted on curved substrates.…”

Section: Introductionmentioning

confidence: 99%

Curvature-induced defects on carbon-infiltrated carbon nanotube forests

2022

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Radially aligned CNTs derived carbon hollow cylinder architecture for efficient energy storage

Cited by 9 publications

References 61 publications

N8− Polynitrogen Stabilized on Nitrogen-Doped Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction

N8− Polynitrogen Stabilized on Nitrogen-Doped Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction

Electrochemical capacitance and hydrogen adsorption behavior of activated carbon derived from cattail fiber

Curvature-induced defects on carbon-infiltrated carbon nanotube forests

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