Lnfluence of Surface Treatments of LiMn₂O₄ Powder with Ag on Charge-discharge Characteristics I. Ag Coating

Abstract

Surface treatment of LiMn₂O₄ powder as a cathode material for lithium ion battery was done using the reaction that AgNO₃ decomposes to Ag at high temperature. The surface characteristics were studied by means of a TEM and a potentiometric titrator. The charge-discharge performances of the LiMn₂O₄ powder were tested at a constant current density of 0.50 mA cm⁻², and at 30°C and 60°C. The results showed that the surface treatment can significantly improve the charge-discharge performance.