[23p-E204-1~13] 6.3 Oxide electronics

[23p-E204-4] Growth of LiCoO₂ thin films on Al substrates and application for Li-ion batteries

〇Mizuki Shima¹, Iwao Kawayama¹, Riki Kataoka², Yasushi Maeda², Toshiya Doi¹ (1.Kyoto Univ., 2.AIST)

Keywords:LiCoO2, Al substrate, lithium-ion battery

All-solid-state thin-film lithium-ion batteries are expected to be used in IoT devices and IC chips. Au, Pt and Nb-doped SrTiO₃ single crystals, which have low reactivity with cathode materials and high melting points, are used as substrates and current collectors in basic research. However, it is necessary for practical applications to use substrates that are less expensive and easier to process. In this study, we have demonstrated that LiCoO₂ thin film can be crystallized on Al substrate and works as a cathode.