scholarly journals Identifying the Degradation Mechanism in Commercial Lithium Rechargeable Batteries via High-Energy X-ray Compton Scattering Imaging

2020 ◽  
Vol 10 (17) ◽  
pp. 5855
Author(s):  
Kosuke Suzuki ◽  
Yuji Otsuka ◽  
Naruki Tsuji ◽  
Kazushi Hoshi ◽  
Yoshiharu Sakurai ◽  
...  
Keyword(s):  
Compton Scattering ◽  
Degradation Mechanism ◽  
High Energy ◽  
Rechargeable Batteries ◽  
Stable Phase ◽  
Promising Technique ◽  
X Ray ◽  
Lithium Rechargeable Batteries ◽  
S Parameter ◽  
Aged Cell

Synchrotron-based high-energy X-ray Compton scattering imaging is a promising technique for non-destructively and quantitatively investigating commercialized lithium rechargeable batteries. We apply the Compton scattering imaging technique to commercial coin-type lithium rechargeable cells (VL2020) to non-destructively identify the degradation mechanism of the cell. The correlations between the Compton scattering intensity and line-shape of the Compton scattering X-ray energy spectrum (S-parameter) obtained from this technique produce unique distributions that characterize the aged cell. These distributions in the aged cell indicate that the stable phase of the anode formed through the overvoltage charge–discharge cycle. This stable phase prevents lithium reactions, producing microbubbles with the decomposition of the electrolyte.

Development of ion-conducting polymer electrolytes for use in high-energy lithium rechargeable batteries

1989 ◽  
Vol 24 (1) ◽  
pp. 151-162 ◽  
Author(s):  
M. Duval ◽  
M. Gauthier ◽  
A. BΈLANGER ◽  
P. E. Harvey ◽  
B. Kapfer ◽  
...  
Keyword(s):  
Conducting Polymer ◽  
Polymer Electrolytes ◽  
High Energy ◽  
Rechargeable Batteries ◽  
Lithium Rechargeable Batteries ◽  
Ion Conducting ◽  
Ion Conducting Polymer

scholarly journals High-Energy X-Ray Compton Scattering Imaging of 18650-Type Lithium-Ion Battery Cell

2019 ◽  
Vol 4 (3) ◽  
pp. 66 ◽  
Author(s):  
Kosuke Suzuki ◽  
Ari-Pekka Honkanen ◽  
Naruki Tsuji ◽  
Kirsi Jalkanen ◽  
Jari Koskinen ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Lithium Ion Battery ◽  
Compton Scattering ◽  
Present Method ◽  
Large Scale ◽  
Lithium Ion ◽  
High Energy ◽  
The Other ◽  
Battery Cell ◽  
X Ray

High-energy synchrotron X-ray Compton scattering imaging was applied to a commercial 18650-type cell, which is a cylindrical lithium-ion battery in wide current use. By measuring the Compton scattering X-ray energy spectrum non-destructively, the lithiation state in both fresh and aged cells was obtained from two different regions of the cell, one near the outer casing and the other near the center of the cell. Our technique has the advantage that it can reveal the lithiation state with a micron-scale spatial resolution even in large cells. The present method enables us to monitor the operation of large-scale cells and can thus accelerate the development of advanced lithium-ion batteries.

The effect of compton scattering on high energy X-ray fluorescence

1974 ◽  
Vol 3 (2) ◽  
pp. 88-89
Author(s):  
K. G. Carr-Brion
Keyword(s):  
Compton Scattering ◽  
High Energy ◽  
X Ray

scholarly journals Redox orbitals in LixMn2O4(0 < x < 2) studied by X-ray Compton scattering

2014 ◽  
Vol 70 (a1) ◽  
pp. C1556-C1556
Author(s):  
Kosuke Suzuki ◽  
Katsuhiko Minegishi ◽  
Kenta Hamano ◽  
Hiroshi Sakurai ◽  
Bernardo Barbiellini ◽  
...  
Keyword(s):  
Compton Scattering ◽  
Room Temperature ◽  
Molecular Orbital Calculation ◽  
Rechargeable Batteries ◽  
Discharge Process ◽  
X Rays ◽  
X Ray ◽  
Positive Electrode Material ◽  
Position Sensitive ◽  
Li Ion

LixMn2O4 is attracting much interest as a positive electrode material for Li-ion rechargeable batteries. Redox orbitals of LixMn2O4 under the charge or discharge process are not fully understood yet. Some band calculations have pointed out that intercalated Li 2s electrons occupy Mn sites or down-spin Mn 3d bands [1,2]. On the other hand molecular orbital calculation has reported the Li 2s electrons occupy O sites [3]. To clarify the redox orbital is important to understand the electrochemical reaction in the electrodes. In this study we have investigated the redox orbitals in LixMn2O4 by X-ray Compton scattering. Compton profiles were measured at BL08W of SPring-8, Japan. The energy of incident X-rays were 115keV and the scattering angle was 165 degrees. Energy spectra of Compton scattered X-rays were measured using a two-dimensional position sensitive detector. The measurements were performed under room temperature and vacuum conditions. Samples are polycrystalline of LixMn2O4 (x=0.5, 1.1, 1.2, 1.8 and 2.0). In order to clarify the redox orbitals of LixMn2O4, we obtained difference Compton profiles which represent the incremental electronic states on Li intercalation. Comparing the results with KKR-CPA and DFT calculations, we found that the O 2p bands play an important role for the redox process in LixMn2O4 with 0<x<2.

scholarly journals The electromagnetic spectrum of the Crab Nebula

1970 ◽  
Vol 37 ◽  
pp. 247-249
Author(s):  
Krishna M. V. Apparao
Keyword(s):  
Compton Scattering ◽  
Power Law ◽  
Crab Nebula ◽  
High Energy ◽  
Electromagnetic Spectrum ◽  
Microwave Region ◽  
X Ray ◽  
High Energy Electrons ◽  
Γ Ray ◽  
The Crab Nebula

The electromagnetic spectrum of the Crab Nebula has been determined experimentally in the radio, optical, and X-ray regions [1], in which it follows a power law of the type S(v) = Av−α, where S(v) is the power (in watts/m2 sec Hz), A and α are constants, and v is the frequency in Hz. Recent measurements [2–5], however, show a deviation from a power law in the microwave region (see Figure 1). In this paper, we investigate the origin of this deviation and calculate the γ-Ray spectrum due to this increase in the microwave photons via the Compton scattering from high-energy electrons.

Electrochemical intercalation of lithium in ternary metal molybdates MMoO4(M=Cu,Zn)

2002 ◽  
Vol 756 ◽  
Author(s):  
Th. Buhrmester ◽  
N. N. Leyzerovich ◽  
K. G. Bramnik ◽  
H. Ehrenberg ◽  
H. Fuess
Keyword(s):  
Electrochemical Reaction ◽  
Rechargeable Batteries ◽  
Lithium Insertion ◽  
Galvanostatic Charge ◽  
Capacity Fading ◽  
X Ray ◽  
Lithium Rechargeable Batteries ◽  
Transitional Metal ◽  
Electrochemical Intercalation ◽  
Ternary Metal

ABSTRACTTernary oxides with general formula MMoO4 (where M is a 3d-transitional metal) were characterized as cathode materials for lithium rechargeable batteries by galvanostatic charge-discharge technique and cyclic voltammetry. The significant capacity fading after the first cycle of lithium insertion/removal takes place for different copper molybdates (standard a-CuMoO4and high-pressure modification CuMoO4 –III) corresponding to the irreversible copper reduction and formation of Li2MoO4 during the first discharge. X-ray powder diffraction data reveal the decomposition of pristine ZnMoO4 by electrochemical reaction, lithium zink oxide with the NaCl-type structure and Li2MoO3 seem to be formed.

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