Surface Modification of Li_1.2Mn_0.6Ni_0.2O₂ with Electronic Conducting Polypyrrole

摘要

To enhance the initial coulombic efficiency, cyclic stability and electronic conductivity of lithium-richcathode material Li1.2Mn0.6Ni0.2O2, surface modification is carried out by a facile chemical oxidationpolymerization method with pyrrole monomer. The comparison between bare and polypyrrole-coatedsamples on the structure, morphology and electrochemical properties are investigated and analyzed.Despite sacrificed a part of initial capacity, the initial coulombic efficiency, the cyclic stability andelectronic conductivity have been improved.