Invention Reference Number
This invention exceptionally improves the mechanical strength of PEO-, or poly(ethylene oxide), based solid polymer electrolytes without sacrificing ionic conductivity. This new conductive membrane’s demonstrated shear modulus, a measure of a material’s ability to resist transverse deformations, reaches 2.5 gigapascals, which is at least two orders of magnitude higher than other PEO-based electrolyte counterparts over a broad temperature range. The maximum conductivity is also improved over most PEO-based electrolytes.
Because the shear modulus of the cross-linked PEO-glass fiber composite is close to that of lithium metal, it is expected to dramatically inhibit lithium dendrite growth, which leads to catastrophic failure in lithium metal batteries.
Benefits
- Improved ionic conductivity
- Improved abilities for fabrication
- Exceptionally high shear modulus
- Higher mechanical strength
- Dimensional stability
Applications and Industries
- Membranes for redox flow batteries
- Separators for battery chemistries
- Membranes for water desalination
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.
