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

Report Date:

2015-02-09

Pagination or Media Count:

24.0

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 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.

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