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Electrochemical Characterization of Submicron Size Particles of LiMn2O4 in Aqueous Electrolytes

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Figure 1. (A) TGA (i) and DTA (ii) curves of precursor LiMn2O4 recorded at a heating rate  of 10 C min-1, and (B) powder XRD patterns of LiMn2O4 samples obtained by  heating the precursor at temperature 800 (i) and  900 0C (ii)
Figure 2. (A) SEM and (B) TEM and (C) HRTEM images of LiMn2O4 powder prepared at 900 0C
Figure 3. Cyclic voltammograms of LiMn2O4 electrode in 5 M LiNO3 aqueous electrolytes of pH (A) 1.5 , (B) 4.2 , (C) 6.5, and (D) 9.5
Figure 4. (A) Typical charge-discharge curves of LiMn2O4 electrode at C/1.5 rate, (B) discharge curves of LiMn2O4 electrode at C/1.5 (i), 2C (ii), 3C (iii), 4C (iv)  and 7C (v) rates, and (C) variation of discharge capacity of LiMnO electrode with cycle nu
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