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Chemical manganese dioxide (CMD) is synthesized by the SEDEMA process and adopted as a precursor for lithium manganese oxide with a spinel structure (LMO). LMO is also prepared from electrolytic manganese dioxide (EMD) as a reference for comparison. X-ray diffraction (XRD) shows that CMD is composed of γ-MnO 2 , and scanning electron microscopy (SEM) with transmission electron microscopy (TEM)...
Li–Mn spinel (LiMn 2 O 4 ) is prepared from several chemical manganese dioxides (CMDs) and the electrochemical performances are compared. The CMDs are synthesized via a redox process involving the simultaneous reduction and oxidation reaction of manganese ions in starting materials to converge to MnO 2 . KMnO 4 is used as an oxidizing agent and various manganese(II)...
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