Bismuth Fluoride based Nanocomposite as Electrode Material

Specific discharge capacities versus cycle numbers for the BiF3/C nanocomposite high-energy milled for 30 min, 1 h, 2 h and 4 h.

Invention Summary:

Batteries have become essential compact and high-energy-density power sources for several applications, including electric vehicles, smartphones, manufacturing, grid storage, and many others. As such, the demand for batteries and accompanying technologies is growing exponentially, creating a significant need for a drastic improvement of the energy density of the cells

Rutgers researchers have developed a novel electrode material comprising nanocrystalline bismuth fluoride compound. This invention relates to primary and secondary electrochemical energy storage systems, particularly to such battery cells systems, which use materials that take up and release ions as means of storing and supplying electrical energy. This nanocrystalline material contains Bi+3 ions and has a maximum energy density of 7170 Wh/I-1.


  • Greater specific capacity than currently available state of the art batteries
  • 300% increase in volumetric energy density than current Lithium batteries
  • Demonstrated excellent rechargeability
  • Demonstrated high power capability (very rare for metal fluorides)

Market Applications:  

  • Energy Storage
  • Electric Vehicle Batteries
  • Consumer Electronics
  • Implantable and space restricted medical devices

Intellectual Property & Development Status: US Patent 7,947,392. Available for licensing and/or search collaboration. 

Patent Information:
Deborah Perez
Associate Director, Physical Sciences & Ag
Rutgers, The State University of New Jersey