electrochemical performance of graphene nanosheets as

Electrochemical performance of a graphene polypyrrole

Graphene nanosheet serves as a support material for the electrochemical utilization of PPy and also provides the path for electron transfer. The specific capacitance value of the nanocomposite has been determined to be 267 F g − 1 at a scan rate of 100 mV s − 1 compared to 137 mV s − 1 for PPy, suggesting the possible use of the nanocomposite as a supercapacitor electrode.

In situ growth of FeOOH nanoparticles on physically

2020/6/151. Introduction Hydrogen peroxide (H 2 O 2), a kind of important biological molecule in cells, is generated by the normal physiological metabolism process of oxygen.Numerous of studies indicate that excessive amount of H 2 O 2 in cells will seriously affect the natural physiological process and result in various of diseases, such as cancer, inflammation, neurodegeneration, DNA damage, and so

Electrochemical performance of decorated reduced

Finally, electrochemical performance was studied in the symmetrical dummy cell by impedance spectroscopy and cyclic voltammetry. Our results show that the electrochemical performance of the RGM electrode (with the charge transfer and series cell resistance of 64.96 and 5.88 ΩcmSUP2/SUP, respectively) is better than the RGO electrode and is comparable with the Pt

Synthesis of LiFePO4/Graphene Nanocomposite and Its

2015/2/25LiFePOsub4/sub/graphene nanocomposite was successfully synthesized by rheological phase method and its electrochemical properties as the cathode materials for lithium ion batteries were measured. As the iron source in the synthesis, FeOOH nanorods anchored on graphene were first synthesized. The FeOOH nanorods precursors and the final LiFePOsub4/sub/graphene

Flexible Supercapacitors Based on Graphene/Boron Nitride

2021/4/14To study the influence of BNNS on the electrochemical performance of WSC, we designed two kinds of WSC devices, one is based on electrodes of graphene inserted with BNNS (denoted as G/BNNSH) and the other one is based on electrodes with sole).

Double Hydrothermal Synthesis of Graphene Supported TiO 2 (b) Nanosheets

YU Han,KONG Jing,LAI Ri-Yu. Double Hydrothermal Synthesis of Graphene Supported TiO 2 (b) Nanosheets as Anode Materials for Lithium Ion Batteries[J]. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2013, 32(10): 1591-1596. URL:

Electrochemical performance of graphene nanosheets as

2009/6/1Graphene nanosheets (GNSs) were prepared from artificial graphite by oxidation, rapid expansion and ultrasonic treatment. The morphology, structure and electrochemical performance of GNSs as anode material for lithium-ion batteries were systematically

Electrical and electrochemical applications of liquid exfoliated nanosheets

GRAPHENE AND 2DM ONLINE CONFERENCE (GO2021) Electrical and electrochemical applications of liquid exfoliated nanosheets Jonathan N Coleman School of Physics, CRANN and AMBER Research Centers, Trinity College Dublin, Dublin 2, Ireland colemaj

KOH activated carbon/graphene nanosheets

In this paper, composites of KOH activated carbon/graphene nanosheets were prepared via a simple hydrothermal treatment of graphite oxide and KOH activated carbon. The electrochemical experiments that were conducted demonstrate that these composites exhibited synergistically improved electrochemical performance as electrodes in a supercapacitor.

Electrochemical performance of graphene nanosheets as

2009/6/15Graphene nanosheets (GNSs) were prepared from artificial graphite by oxidation, rapid expansion and ultrasonic treatment. The morphology, structure and electrochemical performance of GNSs as anode material for lithium-ion batteries were systematically

OPUS at UTS: Graphene nanosheets as cathode catalysts

2012/2/1Graphene nanosheets have been investigated as cathode catalysts for lithium-air batteries with alkyl carbonate electrolyte. Field emission scanning electron microscopy, transmission electron microscope and Raman spectroscopy have confirmed the high quality of the as-prepared graphene nanosheets and the surface analysis has identified the mesoporous characteristic of graphene nanosheets.

N

To improve the electrochemical performance of TiO 2 nanotube as anode materials in Li-ion batteries, N-doped TiO 2 nanotube/N-doped graphene composites were prepared via hydrothermal synthesis followed by heat-treatment in presence of urea. The N doped TiO 2 nanotubes/N-doped graphene composites were characterized by X-ray powder diffraction, transition electron microscopy, scanning

Improved electrochemical performance of free standing

Improved electrochemical performance of free standing electrospun graphene incorporated carbon nanofibers for supercapacitor In this paper, we report the fabrication of carbon nanofibers (CNFs) by electrospinning of polyacrylonitrile (PAN) solution in N,N-dimethylformamide (DMF)with different concentrations followed by stabilization and carbonization in a tubular quartz furnace.

Figure 3 from Enhanced Electrochemical Performance of

Figure 3. (a, b) Cycling performance of Fe0.74Sn5 nanospheres, the Fe0.74Sn5RGO nanocomposite, and bare graphene at 50 mA/g current density in Li-ion battery and 20 mA/g current density for Na-ion battery. The Coulombic efficiencies of Fe0.74Sn5

Enhanced electrochemical performance of lithium ion

Enhanced electrochemical performance of lithium ion batteries using Sb2S3 nanorods wrapped in graphene nanosheets as anode materials Authors: Dong, Yucheng Yang, Shiliu Zhang, Zhenyu Lee, Jong-Min Zapien, Juan Antonio Keywords: Issue Date: 2018

A Comparison of Exfoliation Methods on Microstructure

2012/1/31The electrochemical performance of the graphene nanosheets were comparatively tested by cyclic voltammetry and galvanostatic discharge-charge tests. The GNS via thermal expansion exhibited better electrochemical property with the specific capacity of

Influence of paper thickness on the electrochemical performances of graphene

Graphene Graphene nanosheets paper Lithium ion battery Electrochemical energy storage Freestanding a b s t r a c t This paper focuses on an understanding of the inﬂuence of paper thickness on the electrochemical per

Frontiers

2020/4/30The excellent electrochemical performance of FeOOH/GO was due to the reticulated graphene structure, as illustrated in Figures 6A,B. First, the FeOOH nanorod structure (edge length ≤ 100 nm) provided a notably short ion diffusion distance and a small volume deformation.

Impact of nano

2019/10/3Diverse properties of graphenic materials have been extensively explored to determine properties that make good electrochemical nanomaterial-based biosensors. These are reviewed by critically examining the influence of graphene nano-morphology, lattice defects and conductivity. Stability, reproducibility and fabrication are discussed together with sensitivity and selectivity. We

Synthesis and functionalization of graphene and

2016/8/1Graphene modified carbon nanosheets for electrochemical detection of Pb(II) in water. J. Mater. Chem. A. 2013, 1, 13139–13145. Search in Google Scholar [168] Zhao XH, Kong RM, Zhang XB, Meng HM, Liu WN, Tan W, Shen GL, Yu RQ. Graphene-DNAzyme

Scalable synthesis of functionalized graphene as cathodes in Li

Scalable synthesis of functionalized graphene as cathodes in Li-ion electrochemical energy storage devices Dongbin Xionga,b,c, Xifei Lia,b,, Hui Shana,b, Bo Yana,b, Dejun Lia,b,, Craig Langfordd, Xueliang Sund,a,b, a Energy Materials Engineering Centre, College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China

Graphene nanosheets as cathode catalysts for lithium

Graphene nanosheets have been investigated as cathode catalysts for lithium-air batteries with alkyl carbonate electrolyte. Field emission scanning electron microscopy, transmission electron microscope and Raman spectroscopy have confirmed the high quality of the as-prepared graphene nanosheets and the surface analysis has identified the mesoporous characteristic of graphene nanosheets.

Flexible Supercapacitors Based on Graphene/Boron Nitride

Li2S growth on graphene: Impact on the electrochemical

2020/1/2Li 2 S growth on graphene: Impact on the electrochemical performance of Li-S batteries J. Chem. Phys. 152, 014701 (2020 and J. Chen, " Ultrasmall Li 2 S nanoparticles anchored in graphene nanosheets for high-energy lithium-ion batteries," Sci. Rep. 4, 27.

Flexible Supercapacitors Based on Graphene/Boron Nitride

Improving the Electrochemical Performance of Graphene

Improving the Electrochemical Performance of Graphene Nanosheets as Anode in Half and Full Lithium-Ion Cells Oscar A. Vargas C., lvaro Caballero, Julin Morales Instituto Universitario de Investigacin en Qumica Fina y Nanoqumica. Departamento de