LiCoO2 films were directly deposited on electron-conducting substrates using electrochemical reflux method in an aqueous solution under ambient atmosphere at a fixed temperature between 100 and 200°C with a fixed current density between 0.1 and 1.0 mA cm-2. The structural and compositional purities of the deposited LiCoO2 film were confirmed by elemental analyses, X-ray diffraction pattern analyses, and Raman spectroscopy. According to the Raman spectroscopy and the voltage versus capacity profiles for the deposited LiCoO2 film, it appears that the deposited film consists of layered LiCoO2 phase (space group R̄3m). Although the deposited LiCoO2 film was fabricated in a very economical and simple way, it exhibits an initial discharge capacity of 54.1 μAh/cm 2 μm and the discharge capacity retention of 85.6% over 15 cycles.
All Science Journal Classification (ASJC) codes
- 化學工程 (全部)