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首页> 外文期刊>International Journal of Electrochemistry >Synthesis and Electrochemical Performance of LiMnPO4by Hydrothermal Method
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Synthesis and Electrochemical Performance of LiMnPO4by Hydrothermal Method

机译：水热法合成LiMnPO4及其电化学性能

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摘要

LiMnPO4with olivinestructure which is the promising candidate for high voltage cathode material was synthesized by hydrothermal method. In order to synthesize high purity and well-defined LiMnPO4, several precursors for Li, Mn, and P sources and hydrothermal reaction parameters including temperature and [H2O]/[Mn] value are optimized. By analyzing the structure, Mn valence, morphology, and chemical ratio via XRD, XPS, Raman, SEM, and ICP LiMnPO4synthesized from manganese acetate tetrahydrate have single phase of LiMnPO4without impurity and showed charge and discharge reaction caused by Mn2+/Mn3+redox. Specific capacity of synthesized LiMnPO4grew up during cycling. Moreover, when hydrothermal temperature was set at 150°C and [H2O]/[Mn] value was set at 15, discharge capacity as high as 70 mAh/g was obtained at1/20  Crate.
机译：通过水热法合成了橄榄石结构的LiMnPO4，它是高压阴极材料的有希望的候选物。为了合成高纯度和定义明确的LiMnPO4，对Li，Mn和P源的几种前体以及包括温度和[H2O] / [Mn]值在内的水热反应参数进行了优化。通过XRD，XPS，拉曼光谱，SEM和ICP分析Mn的价，形态和化学比，由四水合乙酸锰合成的LiMnPO4具有单相的LiMnPO4，没有杂质，并表现出Mn2 + / Mn3 +氧化还原引起的充放电反应。合成的LiMnPO4的比容量在循环过程中增加。另外，将水热温度设定为150℃，将[H 2 O] / [Mn]值设定为15时，在1/20℃的条件下可获得高达70 mAh / g的放电容量。

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