Unravelling the complex nanostructure of La0.5−xLi0.5−xSr2xTiO3 Li ionic conductors

2016 ◽  
Vol 45 (16) ◽  
pp. 7148-7157 ◽  
Author(s):  
Ester García-González ◽  
Esteban Urones-Garrote ◽  
Alejandro Várez ◽  
Jesús Sanz
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ionic Conductors ◽  
Average Structure ◽  
Transmission Electron ◽  
Li Ion ◽  
Complex Nanostructure ◽  
Li Ion Conductors ◽  
Ion Conductors

The intricate nanostructure of La0.5−xLi0.5−xSr2xTiO3 Li-ion conductors has been elucidated. Advanced transmission electron microscopy has allowed investigation where average structure models cannot account for the changeable local atomic arrangements detected.

Recent Developments in Transmission Electron Microscopy Techniques to the Characterization of Cycled Li-Ion Electrode Materials

2019 ◽  
Vol 3 (27) ◽  
pp. 139-153 ◽  
Author(s):  
Loic Dupont ◽  
Lydia Laffont ◽  
Sylvie Grugeon ◽  
Stephane Laruelle ◽  
Vincent Bodenez ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Electrode Materials ◽  
Transmission Electron ◽  
Recent Developments ◽  
Li Ion ◽  
Microscopy Techniques

scholarly journals In Situ and In Operando Techniques to Study Li-Ion and Solid-State Batteries: Micro to Atomic Level

Inorganics ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 85
Author(s):  
Maryam Golozar ◽  
Raynald Gauvin ◽  
Karim Zaghib
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Photoelectron Spectroscopy ◽  
Atomic Level ◽  
X Ray ◽  
In Situ Techniques ◽  
Transmission Electron ◽  
Wide Range ◽  
Li Ion

This work summarizes the most commonly used in situ techniques for the study of Li-ion batteries from the micro to the atomic level. In situ analysis has attracted a great deal of interest owing to its ability to provide a wide range of information about the cycling behavior of batteries from the beginning until the end of cycling. The in situ techniques that are covered are: X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Scanning Transmission Electron Microscopy (STEM). An optimized setup is required to be able to use any of these in situ techniques in battery applications. Depending on the type of data required, the available setup, and the type of battery, more than one of these techniques might be needed. This study organizes these techniques from the micro to the atomic level, and shows the types of data that can be obtained using these techniques, their advantages and their challenges, and possible strategies for overcoming these challenges.

scholarly journals The Distribution of Li Ions in the Oxide Film Formed on Zircaloy-4 Corroded in Lithiated Water at 633 K

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 873
Author(s):  
Shijing Xie ◽  
Bangxin Zhou ◽  
Xue Liang ◽  
Qiang Li ◽  
Wenqing Liu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Corrosion Resistance ◽  
Oxide Film ◽  
Atom Probe Tomography ◽  
Atom Probe ◽  
Ion Distribution ◽  
Rolling Surface ◽  
Transmission Electron ◽  
Li Ion

Transmission electron microscopy (TEM), second ion mass spectrum (SIMS) and atom probe tomography (APT) techniques are used to study the Li ion distribution in the oxide formed on the rolling surface (SN) of Zircaloy-4 corroded in lithiated water with 0.01 M LiOH at 633 K/18.6 MPa. The results showed that the Li ions segregated in the grain boundaries and subgrain boundaries in the oxide film, but nearly no Li ions were found in the oxide around the interface between the oxide and matrix. Finally, we discussed the mechanism of the LiOH influence on the corrosion resistance of Zircaloy-4.

Direct Visualization of Solid Electrolyte Interphase Formation in Lithium-Ion Batteries with In Situ Electrochemical Transmission Electron Microscopy

2014 ◽  
Vol 20 (4) ◽  
pp. 1029-1037 ◽  
Author(s):  
Raymond R. Unocic ◽  
Xiao-Guang Sun ◽  
Robert L. Sacci ◽  
Leslie A. Adamczyk ◽  
Daan Hein Alsem ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Lithium Ion ◽  
Transport Processes ◽  
Self Healing ◽  
Transmission Electron ◽  
Li Ion

AbstractComplex, electrochemically driven transport processes form the basis of electrochemical energy storage devices. The direct imaging of electrochemical processes at high spatial resolution and within their native liquid electrolyte would significantly enhance our understanding of device functionality, but has remained elusive. In this work we use a recently developed liquid cell for in situ electrochemical transmission electron microscopy to obtain insight into the electrolyte decomposition mechanisms and kinetics in lithium-ion (Li-ion) batteries by characterizing the dynamics of solid electrolyte interphase (SEI) formation and evolution. Here we are able to visualize the detailed structure of the SEI that forms locally at the electrode/electrolyte interface during lithium intercalation into natural graphite from an organic Li-ion battery electrolyte. We quantify the SEI growth kinetics and observe the dynamic self-healing nature of the SEI with changes in cell potential.

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