Protection effect of ZrO2 coating layer on LiCoO2 thin film fabricated by DC magnetron sputtering.
Bare and ZrO2-coated LiCoO2 thin films were fabricated by direct current magnetron sputtering method on STS304 substrates. Deposited both films have a well-crystallized structure with (003) preferred orientation after annealing at 600 degrees C. The ZrO2-coated LiCoO2 thin film provide significantly improved cycling stability compared to bare LiCoO2 thin film at high cut-off potential (3.0-4.5 V). The improvement in electrochemical stability is attributed to the structural stability by ZrO2 coating layer.
School of Materials Science and Engineering, Gyeongsang National University, 501, Jinju-daero, Jinju, Gyeongnam 660-701, Korea.
Jung-Pil
JP
Noh
Ki-Taek
KT
Jung
Min-Sun
MS
Jang
Tae-Hoon
TH
Kwon
Gyu-Bong
GB
Cho
Ki-Won
KW
Kim
Tae-Hyun
TH
Nam