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Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy
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Interfacial Processes and Influence of Composite Cathode Microstructure Controlling the Performance of
Wenbo Zhang1, Dominik A Weber1, Harald Weigand1
1Physikalisch-Chemisches Institut, Justus-Liebig-Universität Giessen , Heinrich-Buff-Ring 17, 35392 Giessen, Germany.
ACS Applied Materials & Interfaces
|May 9, 2017
Summary
All-solid-state lithium-ion batteries require optimized interfaces for better performance. Careful design of composite microstructures is crucial for balancing energy and power density in these next-generation devices.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- All-solid-state lithium-ion batteries (ASSLIBs) are promising next-generation energy storage devices.
- Optimized interfacial processes are critical for enhancing ASSLIB performance.
- Understanding electrode-electrolyte interactions is key to developing advanced battery materials.
Purpose of the Study:
- To investigate interfacial processes between solid electrolytes and electrode materials in ASSLIBs.
- To analyze the impact of composite cathode microstructure on battery performance.
- To determine optimal solid electrolyte fractions for specific ASSLIB applications.
Main Methods:
- Impedance spectroscopy was employed to monitor interfacial processes.
- Galvanostatic cycling was used to evaluate battery performance.
- The effect of solid electrolyte content in composite cathodes on rate capability was studied.
Main Results:
- Significant interfacial resistance and kinetic hindrance were observed at the metal anode.
- Varying solid electrolyte fractions in composite cathodes impacts rate performance.
- A low solid electrolyte mass fraction is suitable for high energy density applications.
Conclusions:
- Careful design of composite microstructures is essential for tailoring ASSLIB performance.
- Higher solid electrolyte fractions are necessary for achieving high power density.
- Optimized interfacial engineering is vital for advancing solid-state battery technology.
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