The Electrochemical Behavior of Surface Modified Spinel LiMn₂O₄

Abstract:

Spinel LiMn₂O₄ is treated on its surface with CoO_1+x/ZrO₂ in this paper. Metal oxide-coated spinel LiMn₂O₄ was investigated with respect to electrochemical characteristics. The metal oxide coating process was carried out by using the solution method. CoO_1+x/ZrO₂-coated spinel LiMn₂O₄ exhibited stable cyclic performance in the range from 3.0 to 4.4V, and it has less electrochemical impedance, polarization and capacity loss. The cell composed of the CoO_1+x/ZrO₂-coated spinel LiMn₂O₄ can be discharged at a large current density.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 269-275
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.269
• Online since: June 2012
• Authors: Chi Yang
• Keywords: Cathode Material, Coating, Electrochemical Impedance, LiMn₂O₄, Lithium-Ion Battery, Spinel

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