[15p-P12-1~40] 21 Joint Session K "Wide bandgap oxide semiconductor materials and devices" (Poster)

[15p-P12-32] Application of ZnO thin film to protective film of separator for lithium-ion battery

〇Kenji Yoshino^1,2, Daiki Uto¹, Akira Nagaoka^1,2, Shintaro Yasui³ (1.Univ. of Miyazaki, 2.GX Research Lab. Univ. of Miyazaki, 3.Institute of Science Tokyo)

Keywords:

ZnO,lithium-ion battery,separator

In recent years, as lithium-ion batteries have become more widespread, accidents of fire and explosion have been reported, and in order to improve safety, it has been widely reported that the separator inside the lithium-ion battery is coated with ceramics such as Al₂O₃ and SiO₂. The protective film of the separator is an insulator, and it is required to be coated using a low-temperature process so that the resistance of the entire separator does not increase, and the separator deforms at high temperatures. We have previously reported the low-temperature growth of ZnO films by spray pyrolysis using diethylzinc (DEZ) [1]. In this study, we investigated whether ZnO films prepared using this low-temperature coating process can be used as protective films for separators.
[1] K. Yoshino, et al. Jpn. J. Appl. Phys. 50 (2011) 040207-1-3.