Quantifying the Structural Transitions of Chinese Coal to Coal-Derived Natural Graphite by XRD, Raman Spectroscopy, and HRTEM Image Analyses

2021 ◽  
Vol 35 (3) ◽  
pp. 2335-2346
Author(s):  
Liang Yuan ◽  
Qinfu Liu ◽  
Jonathan P. Mathews ◽  
Hao Zhang ◽  
Yingke Wu
Keyword(s):  
Raman Spectroscopy ◽  
Hrtem Image ◽  
Structural Transitions ◽  
Natural Graphite ◽  
Chinese Coal ◽  
Image Analyses

Hydrothermal synthesis of polyaniline intercalated vanadium oxide xerogel hybrid nanocomposites: effective control of morphology and structural characterization

2017 ◽  
Vol 41 (9) ◽  
pp. 3634-3645 ◽  
Author(s):  
Samapti Kundu ◽  
Biswarup Satpati ◽  
Manabendra Mukherjee ◽  
Tanusree Kar ◽  
Swapan Kumar Pradhan
Keyword(s):  
Hydrothermal Synthesis ◽  
Vanadium Oxide ◽  
Structural Characterization ◽  
Hybrid Nanocomposites ◽  
Effective Control ◽  
Hrtem Image ◽  
Xrd Patterns ◽  
Image Analyses

Structural characterization of polyaniline intercalated layered vanadium-oxide xerogel nanocomposites with different morphologies revealed from XRD patterns and FESEM/HRTEM image analyses.

Size Effect of Expandable Graphite

2012 ◽  
Vol 499 ◽  
pp. 72-75 ◽  
Author(s):  
Yan Lu
Keyword(s):  
Particle Size ◽  
Raman Spectroscopy ◽  
Raw Materials ◽  
Structural Disorder ◽  
Expandable Graphite ◽  
X Ray Diffraction ◽  
Natural Graphite ◽  
X Ray ◽  
Intercalating Agents ◽  
Scanning Electron

Using three natural graphites with different particle size, 35, 50 and 80 mesh, as raw materials, expandable graphites were prepared by intercalating, water-washing and drying the natural graphites. The products were characterized by X-ray diffraction, Infrared spectroscopy, scanning electron microscope and Raman spectroscopy. Results show that the structure of expandable graphite is affected strongly by the particle size of natural graphite. With increasing the particle size of natural graphite, for expandable graphite, the expansion degree of graphite flakes along the c-axis and the relative ratio of intercalating agents increase, while the structural disorder increases.

scholarly journals Raman Spectroscopy and Microstructural Study of Natural Graphite Processed by High-Energy Ball Mill

2013 ◽  
Vol 19 (S2) ◽  
pp. 1596-1597 ◽  
Author(s):  
J.M. Mendoza-Duarte ◽  
M.H. Bocanegra-Bernal ◽  
R. Martinez-Sanchez ◽  
I. Estrada-Guel
Keyword(s):  
Raman Spectroscopy ◽  
Ball Mill ◽  
High Energy ◽  
Natural Graphite ◽  
Microstructural Study ◽  
High Energy Ball Mill ◽  
Energy Ball

Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 – August 8, 2013.

Effect of grain size on structural transitions in anataseTiO2: A Raman spectroscopy study at high pressure

2004 ◽  
Vol 70 (13) ◽  
Author(s):  
G. R. Hearne ◽  
J. Zhao ◽  
A. M. Dawe ◽  
V. Pischedda ◽  
M. Maaza ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Grain Size ◽  
High Pressure ◽  
Structural Transitions ◽  
Spectroscopy Study

A spectroscopic study on surface and structural transitions of carbon nanotubes under different atmospheres

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 79401-79404 ◽  
Author(s):  
S. Y. Moon
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Spectroscopic Study ◽  
Structural Transitions ◽  
Graphene Layers

The structural transitions of carbon nanotubes (CNTs) demonstrated under air, Ar, and mixed H2/Ar atmospheres using Raman spectroscopy, which related to C–C stretching on graphene layers.

Characteristic Improvement of Carbon Coating by Furan Resin on Natural Graphite as Anode for Lithium Ion Batteries

2012 ◽  
Vol 581-582 ◽  
pp. 768-772
Author(s):  
Yu Shiang Wu
Keyword(s):  
Heat Treatment ◽  
Raman Spectroscopy ◽  
Lithium Ion Batteries ◽  
Amorphous Carbon ◽  
Carbon Coating ◽  
Lithium Ion ◽  
X Ray Diffraction ◽  
Natural Graphite ◽  
X Ray ◽  
Furan Resin

Natural graphite and carbonaceous materials are the most promising materials as the anode for lithium ion batteries. Carbon coating on natural graphite can inhibit the insertion of lithium complex into graphite and reduce its irreversibility. This study verifies that furan resin can be used as a carbon-coating material to enhance the electrochemistry of the charging and discharging cycles. Furan resin changes into amorphous carbon after heat treatment at 1100°C. It is determined that the 40 wt.% furan resin/natural graphite combination material clearly improves the electrochemical properties by electrical cycling tests. The surface properties have been investigated by Raman spectroscopy profiles and the bulk analyzed by X-ray diffraction (XRD) measurements.

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