Synthesis of Li2Mn4O9 using lithium permanganate precursor

   
   

Li.sub.2 Mn.sub.4 O.sub.8+z, with z greater than zero and less than one, is prepared from LiMnO.sub.4 and an appropriate complimentary compound, such as MnOOH, MnO.sub.2 or MnCO.sub.3 precursors. The Li.sub.2 Mn.sub.4 O.sub.8+z is useful in highly oxidized lithium manganospinels.

Li.sub.2 Mn.sub.4 O.sub.8+z, con z mayor que cero y menos de uno, está preparado de LiMnO.sub.4 y un compuesto elogioso apropiado, tal como MnOOH, los precursores MnO.sub.2 o MnCO.sub.3. El Li.sub.2 Mn.sub.4 O.sub.8+z es útil en manganospinels altamente oxidados del litio.

 
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