[19p-H111-1~22] 6.3 Oxide electronics

[19p-H111-12] Ion conductivity across Li₃PO₄/LiCoO₂ interfaces fabricated using PLD

〇Susumu Shiraki¹, Toru Suzuki¹, Hideyuki Kawasoko¹, Ryota Shimizu¹, Tetsuro Shirasawa², Taro Hitosugi^1,3 (1.AIMR, Tohoku Univ., 2.ISSP, Univ. Tokyo, 3.Tokyo Tech)

Keywords:Lithium batteries,thin films,pulsed laser deposition

We fabricate all-solid-state thin film Li-ion batteries by stacking Li, Li₃PO₄ and LiCoO₂ (LCO) thin films, and demonstrate a very low electrolyte/electrode interface R_i. Cyclic voltammetry curves show some sharp reaction peaks characteristic to LCO indicating a superior stability and repeatability in battery operation.The Nyquist plots shows a small semicircle emerged at a lower frequency region is attributed to charge transfer resistance at the electrolyte/electrode interface.