[9p-N107-1~14] 6.4 Thin films and New materials

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)

[9p-N107-1] Fabrication and Characterization of Li(BH₄)_1-xI_x Thin Films via Iodine Diffusion

〇(D)Erika Fukushi¹, Hiroyuki Oguchi¹ (1.Shibaura Tech.)

Keywords:

Complex hydrides,Solid electrolyte

Li(BH₄)_1-xI_x, in which [BH₄]^- is partially substituted with I^-, exhibits high Li⁺ conductivity and is a promising solid electrolyte for all-solid-state batteries. In this study, LiBH₄/LiI multilayer films were fabricated by infrared laser deposition, followed by annealing to promote iodine diffusion and achieve film formation. The resulting films had a composition of x ≈ 0.23, exhibited a phase transition to the high-temperature phase, and showed a Li⁺ conductivity of 2.6 × 10^-4 S cm^-1 at room temperature.