High Rate Performing Li-ion Battery

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.

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Document Details

Document Type
Technical Report
Publication Date
Feb 09, 2015
Accession Number
ADA616550

Entities

People

  • Palani Balaya

Organizations

  • National University of Singapore

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aluminum Foil
  • Chemistry
  • Diffraction
  • Electrochemical Cells
  • Electrodes
  • Electron Microscopy
  • Energy
  • Energy Storage
  • Lithium Ion Batteries
  • Materials
  • Materials Processing
  • Metals
  • Phase Transformations
  • Spectra
  • Storage
  • Three Dimensional
  • Transition Metals

Fields of Study

  • Materials science

Readers

  • Battery Technology and Engineering
  • Distributed Systems and Data Platform Development
  • Systems Analysis and Design