Operando X-ray diffraction and X-ray absorption studies of the structural transformation upon cycling excess Li layered oxide Li[Li1/18Co1/6Ni1/3Mn4/9]O2 in Li ion batteries

2015 ◽  
Vol 3 (16) ◽  
pp. 8613-8626 ◽  
Author(s):  
Ching-Hsiang Chen ◽  
Chun-Jern Pan ◽  
Wei-Nien Su ◽  
John Rick ◽  
Chih-Jen Wang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Li Ion Batteries ◽  
X Ray Diffraction ◽  
Lithium Ions ◽  
X Ray ◽  
Oxygen Ions ◽  
Surface Electronic Structure ◽  
Absorption Studies ◽  
Li Ion ◽  
X Ray Absorption

Co helps maintain the lithium ions stably in the transition metal inter slabs and the surface electronic structure of oxygen ions is reversible during cycling between 4.6 V and 2.5 V.

Structural complexity of layered-spinel composite electrodes for Li-ion batteries

2010 ◽  
Vol 25 (8) ◽  
pp. 1601-1616 ◽  
Author(s):  
Jordi Cabana ◽  
Christopher S. Johnson ◽  
Xiao-Qing Yang ◽  
Kyung-Yoon Chung ◽  
Won-Sub Yoon ◽  
...  
Keyword(s):  
Structural Complexity ◽  
Composite Electrodes ◽  
Li Ion Batteries ◽  
X Ray Diffraction ◽  
X Ray ◽  
Different Temperatures ◽  
Li Ion ◽  
Excess Phase ◽  
X Ray Absorption

The complexity of layered-spinel yLi2MnO3·(1 – y)Li1+xMn2–xO4 (Li:Mn = 1.2:1; 0 ≤ x ≤ 0.33; y ≥ 0.45) composites synthesized at different temperatures has been investigated by a combination of x-ray diffraction (XRD), x-ray absorption spectroscopy (XAS), and nuclear magnetic resonance (NMR). While the layered component does not change substantially between samples, an evolution of the spinel component from a high to a low lithium excess phase has been traced with temperature by comparing with data for pure Li1+xMn2–xO4. The changes that occur to the structure of the spinel component and to the average oxidation state of the manganese ions within the composite structure as lithium is electrochemically removed in a battery have been monitored using these techniques, in some cases in situ. Our 6Li NMR results constitute the first direct observation of lithium removal from Li2MnO3 and the formation of LiMnO2 upon lithium reinsertion.

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

A novel surface-sensitive X-ray absorption spectroscopic detector to study the thermal decomposition of cathode materials for Li-ion batteries

2016 ◽  
Vol 325 ◽  
pp. 79-83
Author(s):  
Takamasa Nonaka ◽  
Chikaaki Okuda ◽  
Hideaki Oka ◽  
Yusaku F. Nishimura ◽  
Yoshinari Makimura ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Cathode Materials ◽  
Li Ion Batteries ◽  
X Ray ◽  
Li Ion ◽  
X Ray Absorption

Soft-x-ray-absorption studies of the electronic-structure changes through theVO2phase transition

1991 ◽  
Vol 43 (9) ◽  
pp. 7263-7266 ◽  
Author(s):  
M. Abbate ◽  
F. M. F. de Groot ◽  
J. C. Fuggle ◽  
Y. J. Ma ◽  
C. T. Chen ◽  
...  
Keyword(s):  
Electronic Structure ◽  
X Ray ◽  
Structure Changes ◽  
Absorption Studies ◽  
X Ray Absorption

X-ray diffraction and X-ray absorption studies of immobilized bones

1950 ◽  
Vol 6 (7) ◽  
pp. 267-269 ◽  
Author(s):  
A. Engström ◽  
R. Amprino
Keyword(s):  
X Ray Diffraction ◽  
X Ray ◽  
Absorption Studies ◽  
X Ray Absorption
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