Electrophoretic deposition for fabrication NGr/Co3O4 anode of lithium ion battery
Paper ID : 1523-ICNS
majid karami keshmarzi *1, Ahmad Ahmadi Daryakenari2, Hamid omidvar3
1Building bahar - Modarres Boulevard- hashtgerd-Iran
2Division of nanotechnology, Guilan university
3Department of Mining and Metallurgical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
Since Co3O4 is high capacity but due to low electrical conductivity and high volume change during long cycling insertion and extraction of Li ions is not suitable. Utilization of composite materials making use of graphene-based materials together with Co3O4 nanostructures can offer a suitable strategy to address these challenges. Cobalt oxide/nanographitic flake composite synthesized by solvothermal method and then calcined under temperature.two types of electrophoretic deposition processes, namely, direct current and square wave pulse current are used to fabricate binder-free anodes for lithium-ion batteries. The pulsed electrophoretic deposition technique enables the formation of the anode from smaller agglomerated Co3O4 nanoparticles compared to the anode obtained with the direct current electrophoretic deposition.The selective deposition of less agglomerated Co3O4 nanoparticles results in an excellent rate capability and durability of the anode fabricated by the pulsed electrophoretic deposition.
Nanographitic flakes, Co3O4 nanoparticles, Direct Current electrophoretic deposition, Pulsed electrophoretic deposition, Agglomeration
Status : Abstract Accepted