Accession Number : ADA616550


Title :   High Rate Performing Li-ion Battery


Descriptive Note : Final rept. 26 Sep 2012-25 Sep 2014


Corporate Author : NATIONAL UNIV OF SINGAPORE


Personal Author(s) : Balaya, Palani


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a616550.pdf


Report Date : 09 Feb 2015


Pagination or Media Count : 24


Abstract : 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 Li3V2(PO4)3 (LVP) and LiNi1/3Mn1/3CO1/3O2 (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 Wh/kg using alternative cathode materials.


Descriptors :   *CAPACITORS , *ENERGY STORAGE , *LITHIUM BATTERIES , ANODES , CARBON FIBERS , CATHODES , CHEMICAL PROPERTIES , COMPOSITE MATERIALS , ELECTRICAL PROPERTIES , ELECTROCHEMISTRY , ELECTRODES , ENERGY DENSITY , FINITE DIFFERENCE THEORY , MORPHOLOGY , PHYSICAL PROPERTIES , SYNTHESIS(CHEMISTRY)


Subject Categories : Electrical and Electronic Equipment
      Electrochemical Energy Storage


Distribution Statement : APPROVED FOR PUBLIC RELEASE