Our research is focused on the structure-property correlation of cathode materials for rechargeable Lithium-ion batteries. We are currently interested in finding novel or improved cathode materials, such as LiCoMnNiO2, which have high capacity and stable long-term cycling performance; new materials based on spinel structure for high voltage cathode (up to 5 V); novel oxynitride materials for potential electrode and electrolytes applications. Projects involve systematic doping studies on established materials and explore potential novel materials using phase diagram studies. Rietveld refinement of X-ray diffraction (XRD) data will be used to solve structure of new phases. Impedance spectroscopy (IS) analysis will be used to evaluate their intrinsic levels of lithium-ion conductivity and electronic conductivity, electrochemical properties by constructing test cells using the new materials. Our battery research projects are in collaboration with Advanced Battery Lab, National University of Singapore, Singapore. Key projects;
• Layered rock salt-type materials for high energy density cathodes.
• Development of novel High voltage cathode materials.
• Synthesis and characterization of novel oxynitride materials