Bismuth Oxyfluoride based Nanocomposite as Electrode Material


First 3 cycles of the BiO0.5F2/C nanocomposite and galvanostatic curve.

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 oxyfluoride compound. This invention relates to bismuth oxyfluoride nanocomposites used as positive electrode in primary and rechargeable electromechanical energy storage systems which use materials that take up and release ions as means of storing and supplying electrical energy. This nanocrystalline material contains Bi+5 and Bi+3 ions.


  • Greater specific capacity than currently available state of the art batteries
  • High 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 8,039,149. Available for licensing and/or search collaboration. 

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