High Rate Performing Li-ion Battery
Final rept. 26 Sep 2012-25 Sep 2014
NATIONAL UNIV OF SINGAPORE
Pagination or Media Count:
To reduce charging time, an integrated power storage device of batteries and supercapacitors in one unit is proposed. The novel energy storage device will have relatively high energy density comparable to batteries as well as high power density as that of supercapacitors. Potential materials for such a supercap battery are Li3V2PO43 LVP and LiNi13Mn13CO13O2 NMC as cathodes and titanium-based Li4Ti5O12 LTO as anode respectively to provide high storage capacity and high rate performance. A detailed investigation on LVP cathode demonstrated that both the high rate performance and long term cyclability of LVP can be improved by preparing electrode material with a favourable architecture. Phenomenological studies were also conducted, as was preliminary work toward scaling components into a full-size power storage unit. Further work is underway to increase the energy density to 90 Whkg using alternative cathode materials.
- Electrical and Electronic Equipment
- Electrochemical Energy Storage