Fabrication of LiCoO2 thin films on flezible stainless steel substrate for lithium ion batteries
(0) The LiCoO2 cathode coating on a flexible stainless steel has been successfully formed by using sol-gel process and spin-coating technique. The microstructures and electrochemical performance of this LiCoO2 cathode were characterized by using an X-ray diffractometer (XRD), a scanning electron microscope (SEM) and electrochemical methods. After annealing at ca. 500℃, the results of XRD showed that the LiCoO2 gel was crystallized and the crystallized thin films show hexagonal phase with a space group R 3 m. When the annealing temperatures kept at 700℃, the stainless steel substrate was oxidized and subsequently reacted with LiCoO2. Such a reaction also destabilized the structure of LiCoO2. The SEM observation indicated that the average grain size of films increased with increasing temperature and the thickness of spin-coated films is ca. 1-3μm. The LiCoO2 thin films prepared from sol-gel process and spin-coating exhibit reversible electrochemical behavior of Li+intercalation and de-intercalation reactions.
Flezible Li-ion batteries Cathode Stainless steel
Chung-Ta Ni Kuan-Zong Fung
Department of Materials Science and Engineering, Frontier Material and Micro/Nano Science and Technology Center, National Cheng Kung University, Tainan, Taiwan
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1230-1233
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）