The reduction of sodium permanganate withlithium iodide in acetonitrile medium to obtain amorphousmanganese oxyiodides has been investigated systematically. Theelectrochemical performance of the oxyiodides depends on thecomposition, which in turn is controlled by the permanganate tolithium iodide ratio in the reaction mixture. Optimizedcompositions and electrode-making process give a capacity of335, 275, and 220 mAh/g, respectively, at a current density of0.05, 0.5, and 1 mA/cm2 in the range 4.3-1.5V. The oxyiodideexhibits the highest reversible capacity of all known manganeseoxides, with 100% capacity retention.
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机译：已经系统地研究了在乙腈介质中用碘化锂还原高锰酸钠得到无定形锰氧碘化物。碘氧化物的电化学性能取决于组成，而组成又受反应混合物中高锰酸盐与碘化锂之比的控制。优化的成分和电极制造工艺在电流密度为0.05、0.5和1 mA / cm2（范围为4.3-1.5V）时分别提供了335、275和220 mAh / g的容量。碘化氧显示出所有已知锰氧化物中最高的可逆容量，容量保持率为100％。
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