Ceramic solid electrolytes such as Li1.3Ti1.7Al0.3(PO4)3
trolyte [6–14].
(LTAPO) have a high ionic conductivity, a high lithium transference number (tLi ≈ 1), and are
non-flammable. However, the ceramic electro- lyte displays drawbacks such as brittleness and high
interface resistance
to electrodes [15].