Partially Graphitized Iron−Carbon Hybrid Composite as an Electrochemical Supercapacitor Material

Manippady, Sai Rashmi; Singh, Ashish; Rout, Chandra Sekhar; Samal, Akshaya K.; Saxena, Manav

doi:10.1002/celc.202000377

Cited by 12 publications

(8 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gradual attenuation of C sp with increased current density was due to the slow redox reaction rate at a high current density . Further, there is diffusion limitation and less utilization of the active material at high current density . The function of peak current versus square root of scan rate was plotted and is shown in Figure F, which displays a linear relationship denoting that the Faradaic reaction that occurs on the CoTe-2 electrode is a diffusion control method.…”

Section: Resultsmentioning

confidence: 99%

Co-Decorated Tellurium Nanotubes for Energy Storage Applications

Bhol

Swain

Jena

et al. 2021

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

This paper explicitly discusses the synthesis of Codecorated Te nanotubes (NTs) using Te NTs as the sacrificial template and the evaluation of their electrochemical performance. First, one-dimensional (1D) Te NTs were synthesized and characterized by spectroscopic and microscopic tools such as UV−visible spectroscopy, X-ray diffraction spectroscopy, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, high-resolution transmission electron microscopy, and energy-dispersive X-ray spectroscopy analyses. The asprepared hexagonal Te NTs (h-Te NTs) possess diameters of about 35 ± 5 nm and lengths of about 500 ± 50 nm and were used for the synthesis of Co-decorated Te NTs. The 1D nanostructure with excellent conductivity enables the material to show excellent electrochemical performance. The asymmetric assembly of the CoTe-2//AC electrode material displayed a high specific capacitance of 147 F g −1 (specific capacity, 162 C g −1 ) at a current density of 2 A g −1 in 4 M KOH electrolyte. In addition to that, the assembly of CoTe-2//AC achieved an excellent energy density of 51.1 W h kg −1 at a power density of 2294 W kg −1 and confirmed the as-synthesized Co-decorated Te NTs to be an excellent electrode material.

show abstract

Section: Resultsmentioning

confidence: 99%

Co-Decorated Tellurium Nanotubes for Energy Storage Applications

Bhol

Swain

Jena

et al. 2021

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Thanks to the endeavors from global researchers, the application fields of IC nanostructures have been expanded to extensive ranges, such as Fischer−Tropsch syntheses, 5−7 oxygen reduction reaction, 8,9 electrocatalysis, batteries, 10,11 and supercapacitors. 12 It is noteworthy that the inherent characteristics of IC nanostructures make them an emerging material in the biomedical field, especially in tumor theranostics. iron-based intermetallic compound, IC nanostructures exhibit magnetic capacity, making their application in magnetic-related fields attractive.…”

Section: Introductionmentioning

confidence: 99%

Iron Carbide Nanostructures: An Emerging Material for Tumor Theranostics

Wang

Hou

2021

Acc. Mater. Res.

View full text Add to dashboard Cite

Conspectus Iron carbide (IC) nanostructures have attracted intense interest in several energetic and magnetic-related fields due to their high saturation magnetization, desirable stability, and excellent catalytic activity. Due to their iron-based magnetic capacity and carbon-arising near-infrared light-responsive performance, IC nanostructures have been regarded as emerging materials for tumor theranostics in the past decades. They have been extensively explored in several tumor-related biomedical areas, such as magnetic targeting, magnetic resonance imaging, magnetic hyperthermia, photoacoustic tomography, and photothermal therapy. In view of the growing requirements for tumor theranostics, IC nanostructures need to be incorporated with other nanostructures to form the improved IC-based nanocomposites. The success of such a manufacturing process needs not only the deep understanding of the synthesis mechanism of IC nanostructures but also the functionality of IC nanostructures in tumor diagnosis and therapy, as well as the interaction between IC nanostructures and the specific tumor microenvironment. By forming IC-based nanocomposites, the application scope of IC nanostructures is expanded to some unexplored areas, expecting to discover new biological functionality. In this Account, we summarize the synthesis and surface modification of IC-based nanostructures, and their recent promising applications in tumor theranostics, aiming to provide some paradigms for designing IC-based nanocomposites and uncover the interactions between IC-based nanocomposites and biological systems. The great potential of IC nanostructures in tumor theranostics is promoted by understanding their stimuli-responsive behavior in the tumor microenvironment and incorporating them with other functional materials to construct IC-based nanocomposites. For diagnosis purposes, IC nanostructures are excellent contrast agents for magnetic resonance imaging and photoacoustic tomography. Their applications can be expanded to other diagnostic modalities by suitable design of IC-based nanocomposites, such as introducing silver sulfide for fluorescence imaging. For therapy purpose, IC nanostructures can kill tumor cells through magnetic hyperthermia and photothermal effect, as well as using Fenton reaction-generated toxic hydroxyl radical. Furthermore, they can act as targeting carriers for antitumor drugs, releasing the payload on-demand at tumor site for chemotherapy. In the end, we look at the challenges and possible research directions for IC nanostructures, hoping to provide inspiration for future investigation.

show abstract

“…Bagasse is dry fibrous residue made up of 32-34% cellulose, 19-24% hemicellulose, 25-32% lignin, 6-12% extractives, and 2-6% ash that remains after sugarcane stalks are crushed to extract juice. 37,38 The oxygen moieties present in the bagasse coordinates with Fe 3+ ions and helps in homogenous distribution of iron oxides during the carbonization. Interestingly, composite material showed an impressive overpotential of 0.86 V vs RHE in 0.1 M KOH.…”

Section: Introductionmentioning

confidence: 99%

Low-cost, Electro-Active C@Fe3C/Fe3O4 composite derived using bagasse for the oxygen reduction reaction

Manippady

Khan

Samal

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

As the world is heading towards a sustainable future, it is highly important to develop low-cost electrocatalysts for energy generation devices. Herein, we report the synthesis of iron-carbon hybrid (C@Fe3C/Fe3O4) nanocomposite for oxygen reduction reaction (ORR), synthesized using bagasse as a carbon source material and Fe(III) precursor at 900 ˚C. The synthesized C@Fe3C/Fe3O4 composite exhibits a high surface area of ~930 m 2 /g. The electrode material has a 0.86 V overpotential vs RHE. Moreover, the electrocatalyst shows catalytic stability upto 18 h at the static potential of 0.25 V vs RHE at the rotation speed of 1600 rpm. Herein, the electron transfer number is close to 4 which suggests that our electrocatalyst may have an impact on efficient electrocatalyst designing for ORR in alkaline solution.

show abstract

Partially Graphitized Iron−Carbon Hybrid Composite as an Electrochemical Supercapacitor Material

Cited by 12 publications

References 61 publications

Co-Decorated Tellurium Nanotubes for Energy Storage Applications

Co-Decorated Tellurium Nanotubes for Energy Storage Applications

Iron Carbide Nanostructures: An Emerging Material for Tumor Theranostics

Low-cost, Electro-Active C@Fe3C/Fe3O4 composite derived using bagasse for the oxygen reduction reaction

Contact Info

Product

Resources

About