Fabrication of Li₇La₃Zr₂O₁₂ fibers using bio-mass template Kapok

Garnet-type lithium ion conductor Li₇La₃Zr₂O₁₂ (LLZO) has received great attention toward development of all solid-state lithium ion batteries due to its high lithium ion conductivity and relative stability against lithium metal at room temperature. Nowadays, more efforts about LLZO focus on studying the effect of crystal structure and ion doping on lithium ion conductivity. However, the morphology of LLZO also is somehow less studied. In this paper, LLZO fibers are successfully synthesized using naturally bio-mass Kapok fibers as template. The pellets pressed by LLZO fibers exhibit higher lithium ion-conductivity with the value 1.30 × 10⁻⁴ S·cm⁻¹. Meanwhile LLZO ink obtained by dispersing LLZO fibers into isopropanol reveals Newtonian fluid property, and is potentially suitable for jet printing.