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TiO2-Modified Spinel Lithium Manganate for Suppressing Mn Ion Dissolution in Lithium Ion Batteries

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Figure

Figure 1. Schematic illustration of the crystal structure of lithium manganate with (a) bulk doping, (b) surface coating, (c) surface doping, which combines the characteristics of bulk doping and surface coating (M represents the doping agent)
Figure 2. SEM images of (a) pristine LiMn2O4 and (b) TiO2-modifed LiMn2O4; EDS spectra of (c) pristine LiMn2O4 and (d) TiO2-modified LiMn2O4
Figure 4. Cycle performances of the coin cells assembled with the (a) unmodified LMO and (b) TiO2-modified LMO cathodes versus a lithium anode at 1 C at room temperature between 3.0 V and 4.3 V
Figure 5. Charge-discharge curves at 55 °C at a rate of 1 C for the TLMO cathode versus a Li anode between 3.0 V and 4.3 V
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