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- W2028049387 abstract "The e phase of electrolytic manganese dioxide (EMD) is the structural form most easily converted in the LiMn2O4 spinel used as cathode in lithium batteries. Thus, employing titanium as anode, a study of electrolysis parameters was carried out in order to determine the best conditions to produce an e-EMD suitable for that spinel preparation. The influence of solution temperature (65oC and 90oC) and current density (between 1 mA/cm2 and 17.5 mA/cm2) on the anode potential and the EMD properties was investigated using an aqueous 2.0 mol/L MnSO4 + 0.30 mol/L H2SO4 solution. In any of the electrolysis conditions tested only the e-EMD structure was obtained, but its specific surface area varied with the applied current density and temperature. Drying the e-EMD at temperatures between 60oC and 120oC did not cause any phase changes. To produce a suitable EMD at the highest current density possible without passivation of the titanium anode, the best electrolysis parameters were determined to be 90oC and 15 mA/cm2. The e-EMD thus obtained had a specific surface area (BET) of ca. 65 m2/g." @default.
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- W2028049387 date "1999-07-01" @default.
- W2028049387 modified "2023-09-25" @default.
- W2028049387 title "Produção de dióxido de manganês eletrolítico para uso em baterias de lítio" @default.
- W2028049387 doi "https://doi.org/10.1590/s0100-40421999000400019" @default.
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