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A series of RuO2 modified LiNi0.5Mn1.5O4 materials are successfully prepared by the precipitation method. X-ray photoelectron spectroscopy confirms the presence of Ru4+ in the materials. Scanning electron microscope and high resolution transmission electron microscope show that RuO2 covers the surface of LiNi0.5Mn1.5O4 particles. The amounts of RuO2 in the materials are determined to be 1.6wt.%, 2...
Li-excess Li[Li 0.18 Ni 0.15 Co 0.15 Mn 0.52 ]O 2 layered cathode material is prepared by the sol-gel method. The material is aged in a LiPF 6 based electrolyte and then is subjected to a series of structural and electrochemical analyses. X-ray diffraction shows that aging in electrolyte does not change the C2/m ordering of the material crystal lattice...
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