Lithium ion conductivity of a statically and dynamically compacted nano-structured ceramic electrolyte for Li-ion batteries

The densification of a ceramic electrolyte for rechargeable lithium ion batteries by using different compaction methods is described. The ceramic electrolyte for lithium ions, BPO4-Li2O, is compacted using either static or dynamic compaction methods. A difference in peak width in the X-ray diffraction spectra and a difference in lithium ion conductivity is observed. The dynamically compacted BPO4-Li2O shows an increase of up to three orders of magnitude in total ionic conductivity as compared with statically compacted samples. The total lithium ion conductivity is up to 2.10(-4) S/cm at room temperature, which can compete with polymer electrolytes.