In situ high-energy synchrotron X-ray diffraction studies and first principles modeling of α-MnO2 electrodes in Li–O2 and Li-ion coin cells

2015 ◽  
Vol 3 (14) ◽  
pp. 7389-7398 ◽  
Author(s):  
Zhenzhen Yang ◽  
Lynn Trahey ◽  
Yang Ren ◽  
Maria K. Y. Chan ◽  
Chikai Lin ◽  
...  
Keyword(s):  
First Principles ◽  
Structural Changes ◽  
High Energy ◽  
X Ray Diffraction ◽  
Synchrotron Diffraction ◽  
X Ray ◽  
Li Ion ◽  
Battery Cells

In situ synchrotron diffraction and first principles modeling shows structural changes in α-MnO2 during cycling in Li–O2 battery cells, as lithium and oxygen are incorporated into and removed from tunnels in the structure.

Using In Situ High-Energy X-ray Diffraction to Quantify Electrode Behavior of Li-Ion Batteries from Extreme Fast Charging

2021 ◽  
Author(s):  
Partha P. Paul ◽  
Chuntian Cao ◽  
Vivek Thampy ◽  
Hans-Georg Steinrück ◽  
Tanvir R. Tanim ◽  
...  
Keyword(s):  
High Energy ◽  
Li Ion Batteries ◽  
X Ray Diffraction ◽  
X Ray ◽  
Fast Charging ◽  
Li Ion

In situ studies of electrodic materials in Li-ion cells upon cycling performed by very-high-energy x-ray diffraction

2001 ◽  
Vol 79 (1) ◽  
pp. 27-29 ◽  
Author(s):  
V. Rossi Albertini ◽  
P. Perfetti ◽  
F. Ronci ◽  
P. Reale ◽  
B. Scrosati
Keyword(s):  
High Energy ◽  
X Ray Diffraction ◽  
X Ray ◽  
In Situ Studies ◽  
Very High Energy ◽  
Li Ion ◽  
Very High

Electronic and Structural Changes in Ni0.5TiOPO4 Li-Ion Battery Cells Upon First Lithiation and Delithiation, Studied by High-Energy X-ray Spectroscopies

2015 ◽  
Vol 119 (18) ◽  
pp. 9692-9704 ◽  
Author(s):  
Rickard Eriksson ◽  
Karima Lasri ◽  
Mihaela Gorgoi ◽  
Torbjörn Gustafsson ◽  
Kristina Edström ◽  
...  
Keyword(s):  
Structural Changes ◽  
High Energy ◽  
Li Ion Battery ◽  
X Ray ◽  
Li Ion ◽  
Battery Cells

scholarly journals Study of Mechanical Behaviour of Polycrystalline Materials at the Mesoscale Using High Energy X-Ray Diffraction

2014 ◽  
Vol 996 ◽  
pp. 118-123 ◽  
Author(s):  
Andrzej Baczmański ◽  
Elżbieta Gadalińska ◽  
Sebastian Wroński ◽  
Chedly Braham ◽  
Wilfrid Seiler ◽  
...  
Keyword(s):  
Mechanical Behaviour ◽  
Pearlitic Steel ◽  
Tensile Tests ◽  
High Energy ◽  
Polycrystalline Materials ◽  
X Ray Diffraction ◽  
Elastoplastic Model ◽  
Synchrotron Diffraction ◽  
X Ray

Owing to its selectivity, diffraction is a powerful tool for analysing the mechanical behaviour of polycrystalline materials at the mesoscale, i.e. phase and grain scale. In situ synchrotron diffraction (transmission mode) during tensile tests and modified self-consistent elastoplastic model were used to study elastic and plastic phenomena occurring in polycrystalline specimens during deformation. The evolution of stress for grains which belong to different phases of duplex stainless steel and pearlitic steel was analyzed.

Structure-Stability Correlations in Li-ion Battery Cathode Materials

2014 ◽  
Vol 1655 ◽  
Author(s):  
Christopher Patridge ◽  
Corey Love ◽  
Wojtek Dmowski ◽  
David Ramaker ◽  
Michelle Johannes ◽  
...  
Keyword(s):  
Structural Changes ◽  
High Energy ◽  
Ex Situ ◽  
Structure Stability ◽  
X Ray Diffraction ◽  
X Ray ◽  
Capacity Loss ◽  
Pair Density ◽  
Pdf Analysis

ABSTRACTDetailed structural studies of two lithiated metal oxides, Li2CuO2 and nanoscale LiCoO2, have been carried out using ex situ high-energy X-ray diffraction (XRD) and in situ X-ray absorption spectroscopy (XAS) with the objective of understanding structural changes that might cause capacity loss during cycling. XRD on the cuprate was studied at various states of charge and phase composition, and the bulk state was determined by Rietveld refinement and pair density function (PDF) analysis. Results showed a largely irreversible structural change of the material upon oxidation of Cu2+ as well as CuO formation. The in-situ XAS of the LiCoO2 was analyzed through a difference method to extract the changes in the local structure that occur upon cycling in both the near edge (XANES) and extended region (EXAFS). Results suggest that cycling causes site exchange of the Co and Li ions near the surface of the nanoscale LiCoO2.

scholarly journals In-Situ High-Energy X-ray Diffraction Study of Austenite Decomposition During Rapid Cooling and Isothermal Holding in Two HSLA Steels

2021 ◽  
Vol 52 (5) ◽  
pp. 1812-1825
Author(s):  
Sen Lin ◽  
Ulrika Borggren ◽  
Andreas Stark ◽  
Annika Borgenstam ◽  
Wangzhong Mu ◽  
...  
Keyword(s):  
Isothermal Holding ◽  
Weight Percent ◽  
High Energy ◽  
Decomposition Kinetics ◽  
Bainitic Transformation ◽  
Austenite Decomposition ◽  
X Ray Diffraction ◽  
Rapid Cooling ◽  
X Ray

AbstractIn-situ high-energy X-ray diffraction experiments with high temporal resolution during rapid cooling (280 °C s−1) and isothermal heat treatments (at 450 °C, 500 °C, and 550 °C for 30 minutes) were performed to study austenite decomposition in two commercial high-strength low-alloy steels. The rapid phase transformations occurring in these types of steels are investigated for the first time in-situ, aiding a detailed analysis of the austenite decomposition kinetics. For the low hardenability steel with main composition Fe-0.08C-1.7Mn-0.403Si-0.303Cr in weight percent, austenite decomposition to polygonal ferrite and bainite occurs already during the initial cooling. However, for the high hardenability steel with main composition Fe-0.08C-1.79Mn-0.182Si-0.757Cr-0.094Mo in weight percent, the austenite decomposition kinetics is retarded, chiefly by the Mo addition, and therefore mainly bainitic transformation occurs during isothermal holding; the bainitic transformation rate at the isothermal holding is clearly enhanced by lowered temperature from 550 °C to 500 °C and 450 °C. During prolonged isothermal holding, carbide formation leads to decreased austenite carbon content and promotes continued bainitic ferrite formation. Moreover, at prolonged isothermal holding at higher temperatures some degenerate pearlite form.

scholarly journals Dislocation densities in a low-carbon steel during martensite transformation determined by in situ high energy X-Ray diffraction

2021 ◽  
Vol 800 ◽  
pp. 140249
Author(s):  
Juan Macchi ◽  
Steve Gaudez ◽  
Guillaume Geandier ◽  
Julien Teixeira ◽  
Sabine Denis ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Martensite Transformation ◽  
Low Carbon Steel ◽  
High Energy ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dislocation Densities

scholarly journals Thermal expansion of La-based BMG studied by in situ high-energy X-ray diffraction

2010 ◽  
Vol 504 ◽  
pp. S155-S158 ◽  
Author(s):  
J. Bednarcik ◽  
C. Curfs ◽  
M. Sikorski ◽  
H. Franz ◽  
J.Z. Jiang
Keyword(s):  
Thermal Expansion ◽  
High Energy ◽  
X Ray Diffraction ◽  
X Ray
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