Development of bipolar all-solid-state lithium battery based on quasi-solid-state electrolyte containing...

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Growing demand for high energy-density lithium-ion secondary batteries for vehicle applications.
• Need for advanced battery technologies to meet increasing energy storage requirements.

Purpose of the Study:

• To prepare and evaluate high-voltage bipolar stacked batteries with a quasi-solid-state electrolyte.
• To assess the performance and voltage characteristics of stacked battery configurations.

Main Methods:

• Fabrication of double-layered and triple-layered bipolar stacked batteries.
• Utilized a quasi-solid-state electrolyte incorporating a Li-Glyme complex.
• Performance evaluation including plateau potentials and cycling stability.

Main Results:

• Successfully produced stacked batteries without internal short-circuits.
• Achieved plateau potentials of 6.7V (double-layered) and 10.0V (triple-layered).
• Demonstrated excellent cycling properties with 99% capacity retention after 200 cycles at 0.5 C for the double-layered device.

Conclusions:

• Bipolar stacked batteries with Li-Glyme complex quasi-solid-state electrolyte can achieve high voltages up to 10V.
• The developed technology shows promise for high-voltage energy storage applications.
• The study confirms the viability of stacked battery designs for enhanced performance.