TY  - CONF
AU  - Basak, Shibabrata
AU  - Tavabi, Amir Hossein
AU  - Tempel, Hermann
AU  - Kungl, Hans
AU  - george, chandramohan
AU  - Dunin-Borkowski, Rafal
AU  - Mayer, Joachim
AU  - Eichel, Rüdiger-A.
TI  - In situ TEM studies for making ideal batteries
M1  - FZJ-2022-05284
PY  - 2022
AB  - Safety features of Li-ion batteries are a high priority requirement as their adoption in electric vehicles and day-to-day electronic devices is continuously increasing. The liquid electrolytes that are typically used in traditional Li-ion batteries are flammable, especially at higher operating voltages and temperatures. By contrast, an all-solid-state battery (ASSB) makes use of solid electrolyte instead of liquid electrolyte, which reduces the risk of flammability. However, the solid-solid electrolyte-electrode interface in ASSBs introduces different sets of challenges from the traditional liquid-solid electrode-electrolyte interface. First, in batteries containing liquid electrolytes entire surface of electrode particles are wetted by electrolytes, whereas the electrode and solid electrolyte particles in ASSBs are connected primarily at point contacts, which are limited in terms of their numbers (as not all electrode particles are in direct contact with electrolyte particles), therefore ionic transport is basically restricted, diminishing the specific capacity of these batteries. Decomposition reactions at the electrode-electrolyte interfaces during battery cycling cause the formation of passivating layers and as well as electrode volume changes during battery cycling result in loss of contacts between electrode and electrolyte particles, further decreasing direct ion exchange pathways. Second, inhomogeneous (de)lithiation through point contacts can induce strain, which affects electrode mechanical integrity leading to capacity fade. Operando transmission electron microscopy (TEM) allows for the visualization of (de)lithiation processes in electrode materials at a single particle level in real-time. In our recent research, we have utilized the volume change property of Si nanoparticles during (de)lithiation to understand the interface kinetics of an ASSB during cycling. Following the safty aspect, aquous based Zn-batteris are also gathering attention. In this resepect, recent works on Zn-ion batteries using liquid phase TEM will also be discussed.
T2  - The 9th Advanced Functional Materials & Devices and The 4th Symposium for Collaborative Research on Energy Science and Technology
CY  - 4 Mar 2022 - 5 Mar 2022, online (Japan)
Y2  - 4 Mar 2022 - 5 Mar 2022
M2  - online, Japan
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/912057
ER  -