Fabrication and electrochemical characteristics of electrospun LiMn2O4 nanofiber cathode for Li-ion batteries

The LiMn2O4 nanofiber cathode was synthesized by electrospinning. It forms porous “network-like” morphology with 150 nm in diameter and ~20 µm in length. For comparison, LiMn2O4 nanoparticle cathode was synthesized by the sol-gel thermolysis process. The nanofiber cathode processes superior cycling stability and rate capacity. The AC impedance results show that the nanofiber cathode has much lower degradation, probably due to the suppressed Mn3+ disproportionation process.