scholarly journals Three-dimensional image based modelling of transport parameters in lithium–sulfur batteries

2019 ◽  
Vol 21 (8) ◽  
pp. 4145-4154 ◽  
Author(s):  
Chun Tan ◽  
Matthew D. R. Kok ◽  
Sohrab R. Daemi ◽  
Daniel J. L. Brett ◽  
Paul R. Shearing
Keyword(s):  
Computed Tomography ◽  
Electrical Conductivity ◽  
Three Dimensional ◽  
Transport Parameters ◽  
X Ray ◽  
Dimensional Image ◽  
Molecular Diffusivity ◽  
Lithium Sulfur Batteries ◽  
Sulfur Electrode ◽  
Lithium Sulfur

A sulfur electrode was imaged with X-ray micro and nano computed tomography for the modelling of effective molecular diffusivity and electrical conductivity through flux based simulations.

scholarly journals Exploring reaction dynamics in lithium–sulfur batteries by time-resolved operando sulfur K-edge X-ray absorption spectroscopy

2019 ◽  
Vol 55 (34) ◽  
pp. 4993-4996 ◽  
Author(s):  
Enyue Zhao ◽  
Junyang Wang ◽  
Feng Li ◽  
Zheng Jiang ◽  
Xiao-Qing Yang ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Reaction Dynamics ◽  
Conversion Process ◽  
Time Resolved ◽  
X Ray ◽  
Lithium Sulfur Batteries ◽  
X Ray Absorption ◽  
Sulfur Electrode ◽  
Lithium Sulfur

The multistep kinetic-determining conversion process of a sulfur electrode is directly revealed through time-resolved operando X-ray absorption spectroscopy.

scholarly journals Three-Dimensional S/CeO2/RGO Composites as Cathode Materials for Lithium–Sulfur Batteries

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1720 ◽  
Author(s):  
Qiuyan Hao ◽  
Guoliang Cui ◽  
Yuan Tian ◽  
Taizhe Tan ◽  
Yongguang Zhang
Keyword(s):  
Photoelectron Spectroscopy ◽  
Three Dimensional ◽  
Reversible Capacity ◽  
Gravimetric Analysis ◽  
X Ray ◽  
Transmission Electron ◽  
Lithium Sulfur Batteries ◽  
3D Composite ◽  
Composition Structure ◽  
Lithium Sulfur

In this paper, the synthesis of the three-dimensional (3D) composite of spherical reduced graphene oxide (RGO) with uniformly distributed CeO2 particles is reported. This synthesis is done via a facile and large-scalable spray-drying process, and the CeO2/RGO materials are hydrothermally compounded with sulfur. The morphology, composition, structure, and electrochemical properties of the 3D S/CeO2/RGO composite are studied using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), thermal gravimetric analysis (TGA), Raman spectra and X-ray photoelectron spectroscopy (XPS), etc. The electrochemical performance of the composites as electrodes for lithium–sulfur batteries is evaluated. The S/CeO2/RGO composites deliver a high initial capacity of 1054 mAh g−1, and retain a reversible capacity of 792 mAh g−1 after 200 cycles at 0.1 C. Profiting from the combined effect of CeO2 and RGO, the CeO2/RGO materials effectively inhibit the dissolution of polysulfides, and the coating of spherical RGO improves the structural stability as well as conductivity.

scholarly journals Three-dimensional image correlation from X-ray computed tomography of solid foam

2008 ◽  
Vol 39 (8) ◽  
pp. 1253-1265 ◽  
Author(s):  
Stéphane Roux ◽  
François Hild ◽  
Philippe Viot ◽  
Dominique Bernard
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Image Correlation ◽  
X Ray ◽  
Dimensional Image ◽  
X Ray Computed ◽  
Solid Foam

X-ray microtomography

1988 ◽  
Vol 46 ◽  
pp. 998-999
Author(s):  
H.W. Deckman ◽  
B.F. Flannery ◽  
J.H. Dunsmuir ◽  
K.D' Amico
Keyword(s):  
Computed Tomography ◽  
Internal Structure ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Tissue Structure ◽  
Individual Element ◽  
X Ray ◽  
Non Invasive ◽  
Panoramic Imaging ◽  
Three Dimensional Images

We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As conventionally practiced in medical Computed Tomography (CT), radiologists produce maps of bone and tissue structure in several planar sections that reveal features with 1mm resolution and 1% contrast. Microtomography extends the capability of CT in several ways. First, the resolution which approaches one micron, is one thousand times higher than that of the medical CT. Second, our approach acquires and analyses the data in a panoramic imaging format that directly produces three-dimensional maps in a series of contiguous stacked planes. Typical maps available today consist of three hundred planar sections each containing 512x512 pixels. Finally, and perhaps of most import scientifically, microtomography using a synchrotron X-ray source, allows us to generate maps of individual element.

scholarly journals Three‐dimensional X‐ray‐computed tomography of 3300‐ to 6000‐year‐old Citrullus seeds from Libya and Egypt compared to extant seeds throws doubts on species assignments

2021 ◽  
Author(s):  
Katherine A. Wolcott ◽  
Guillaume Chomicki ◽  
Yannick M. Staedler ◽  
Krystyna Wasylikowa ◽  
Mark Nesbitt ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
X Ray ◽  
X Ray Computed

Visualizing Fluid Flows With X-Rays

2007 ◽  
Author(s):  
Theodore J. Heindel ◽  
Terrence C. Jensen ◽  
Joseph N. Gray
Keyword(s):  
Computed Tomography ◽  
Flow Visualization ◽  
Three Dimensional ◽  
Fluid Flows ◽  
X Rays ◽  
Radiographic Images ◽  
Optical Access ◽  
X Ray ◽  
X Ray Computed ◽  
Density Map

There are several methods available to visualize fluid flows when one has optical access. However, when optical access is limited to near the boundaries or not available at all, alternative visualization methods are required. This paper will describe flow visualization using an X-ray system that is capable of digital X-ray radiography, digital X-ray stereography, and digital X-ray computed tomography (CT). The unique X-ray flow visualization facility will be briefly described, and then flow visualization of various systems will be shown. Radiographs provide a two-dimensional density map of a three dimensional process or object. Radiographic images of various multiphase flows will be presented. When two X-ray sources and detectors simultaneously acquire images of the same process or object from different orientations, stereographic imaging can be completed; this type of imaging will be demonstrated by trickling water through packed columns and by absorbing water in a porous medium. Finally, local time-averaged phase distributions can be determined from X-ray computed tomography (CT) imaging, and this will be shown by comparing CT images from two different gas-liquid sparged columns.

Three-dimensional analysis of plant structure using high-resolution X-ray computed tomography

2003 ◽  
Vol 8 (1) ◽  
pp. 2-6 ◽  
Author(s):  
Wolfgang H Stuppy ◽  
Jessica A Maisano ◽  
Matthew W Colbert ◽  
Paula J Rudall ◽  
Timothy B Rowe
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Dimensional Analysis ◽  
Three Dimensional ◽  
Plant Structure ◽  
X Ray ◽  
X Ray Computed
Sign in / Sign up

Export Citation Format

Share Document