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Sulphur substituted LiMn2O4-ySy spinels were obtained using the sol-gel method followed by calcination at 300 °C. The crystallinity of the samples was improved by further calcination at 800 °C. The monophase system was formed up to y = 0.20. At higher sulphur concentrations an additional phase (Mn2O3) appeared. The sulphided spinels were thermally stable in air up to about 900 °C. They decomposed...
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