A significant improvement in capacity and cyclability of Al-doped LiCoO2 cathode has been achieved by sol-gel process using acrylic acid as a chelating agent. The structure and electrochemical properties of the Al-doped LiCoO2 powders at various calcination temperatures were investigated. The X-ray diffraction pattern for the Al-doped LiCoO2 powders calcined at 600°C or above shows that these materials are a well-developed, layered HT-LiCoO2 structures. The capacity fading of the Al-doped LiCoO2 electrodes greatly reduced as the calcination temperature decreased. The sol-gel process makes possible the synthesis of Al-doped LiCoO2 with α-NaFeO2 structure at lower temperatures than solid-state synthesis, and thereby the enhancement of the capacity and cyclability of Al-doped LiCoO2 electrode.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Materials Science(all)
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering