Protection effect of ZrO2 coating layer on LiCoO2 thin film fabricated by DC magnetron sputtering
Jung-Pil Noh1, Ki-Taek Jung, Min-Sun Jang
1School of Materials Science and Engineering, Gyeongsang National University, 501, Jinju-daero, Jinju, Gyeongnam 660-701, Korea.
Journal of Nanoscience and Nanotechnology
|November 20, 2013
Abstract:
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.
