Energy Storage Device – Making Use of Peanut Shells Derived Carbon


With a global aim to sustainability, using waste material as sources for alternative energy systems is at the forefront of emerging technologies.licensing opp 2015046 peanut

University of Alberta inventors have developed a carbon/carbon Na-ion (hybrid) capacitor system using two types of carbon from inner and outer portions of peanut shells (or other legume or nut). The anode of the energy storage system is from graphene layers of intercalated ions derived from the inner shell of the nut. The outer shell cellulosic fibril network forms interconnected carbon nanosheets with ion adsorption sites to make up the cathode of the energy storage device. The hybrid ion capacitor system brings advantages of moderate energy and power to a single system over current energy storage devices such as batteries or electrochemical capacitors which offer either high energy or high power respectively.


  • Nanostructured material manufactured from biomass that are otherwise food and agricultural waste
  • Na-ion based energy storage devices are promising alternatives to Li-ion technologies
  • Achieve two fundamentally different (anode vs. cathode) high performance electrodes from same precursor
  • Use of waste material result in dollar savings and furthers sustainability of resources

Protection Status

Patent Pending

Product Number


Contact Information

Monica Varga
Technology Management Group
TEC Edmonton – University of Alberta
Phone: 780-492-5744