Solid electrolyte for all-solid-state lithium secondary batteries with garnet grains and Li-Al-O grain boundaries
This technology relates to a solid electrolyte for all-solid-state lithium secondary batteries, composed of garnet-structured grains and grain boundaries containing Li-Al-O compounds.
Conventional garnet-based solid electrolytes have faced limitations in achieving stable, high ionic conductivity due to high grain boundary resistance and poor sintering properties.
By forming Li-Al-O-based grain boundaries, this technology improves sinterability and conduction pathways, thereby enhancing the ionic conductivity and stability of all-solid-state lithium secondary batteries.
Key Features:
- Garnet-structured solid electrolyte comprising grains represented by a specific chemical formula and grain boundaries containing Li-Al-O compounds
- Garnet-structured solid electrolyte where the lithium coefficient in the chemical formula is between 6 and 8, and M is selected from elements such as niobium or zirconium
- Process of preparing a first solid electrolyte material containing a compound represented by a chemical formula
- Solid electrolyte applied to all-solid-state lithium secondary batteries by forming garnet-structured grains and Li-Al-O-based grain boundaries
