Flexible Solid Electrolytes: Mitigating Electrode/Electrolyte Interface Challenges in Solid-State Lithium-Ion Batteries!

 

Topic  65
Main supervisor Michael Ohl (m.ohl@fz-juelich.de)
MLZ institution FZJ
Local supervisor 1
N.Bucher
Institution
Varta Microbattery GmbH
Local supervisor 2
Institution
Local supervisor 3
Institution
Local supervisor 4
Institution
Title
Flexible Solid Electrolytes: Mitigating Electrode/Electrolyte Interface Challenges in Solid-State Lithium-Ion Batteries!
Description

This project addresses a critical challenge in the development of solid-state lithium-ion batteries by focusing on the design and implementation of a highly flexible solid electrolyte. The primary goal is to address the electrode/electrolyte interface issues that have impeded the widespread adoption of solid-state battery technologies. The use of polymer electrolytes embedded with nanoparticles to enhance ionic conductivity in batteries is a promising and innovative approach. The incorporation of inorganic nanoparticles, such as metal oxides, into polymer electrolytes can provide mechanical compliance at the electrode/electrolyte interface, overcoming limitations associated with the inorganic electrolyte alone. In addition, nanoparticles provide additional pathways for ion transport, thus can enhance the overall ionic conductivity.

The investigation involves a comprehensive approach, integrating material synthesis, advanced structure characterization using neutron scattering techniques, and theoretical calculations employing molecular dynamics simulations. Neutron scattering techniques are employed for detailed structure characterization, offering insights into the crystal structure of nanoparticles, ion diffusion dynamics in the polymer matrix, and macro structure of the flexible solid electrolyte.

The project is to challenge the electrode/electrolyte interface problem in solid-state lithium-ion batteries. The outcomes of this research hold significant promise for advancing solid-state lithium-ion battery technology, thereby improving the reliability, safety, and overall efficiency of these energy storage devices.