中文摘要：

采用微通道反应器-固相烧结法制备纳米级磷酸锰锂（LiMnPO4）正极材料。通过微反应器将反应溶液快速混合,得到了颗粒较小的前驱体产物Mn3（PO4）2·3H2O,通过与锂源、碳源球磨混合,固相烧结得到最终产物LiMnPO4/C。通过X线衍射仪（XRD）、场发射扫描电子显微镜（FESEM）、透射电子显微镜（TEM）以及恒电流充放电对样品进行表征和电化学性能测试,考察不同煅烧温度对LiMnPO4/C的颗粒尺寸及电化学性能的影响。结果表明：在650℃条件下制备出的样品具有最小的颗粒尺寸以及最佳的电化学性能,在0.05C（1C=171 m A·h/g）倍率下的首次放电比容量为121 mA·h/g,经20次循环后容量保持率为86.8%。

英文摘要：

Nano-sized LiMnPOq cathode material was prepared by a microreactor-solid state method.The Mn3（PO4）2 · 3H2O particles,obtained by mixing two reactant solutions rapidly in a microreactor,were ball-milled with lithium and carbon sources to prepare the precursors, and the mixture was sintered under high temperatures to obtain the product LiMnPOq/C.The effects of various calcination temperatures on the particle size and electrochemical performance of LiMnPO4/C were characterized by X-ray diffraction （XRD）,field emission scanning electron microscope （ FESEM）,transmission electron microscopy （TEM） and galvanostatic charge-discharge test.Results showed that the LiMnPO4/C calcined at 650 ℃ exhibited the smallest particle size and the best electrochemical performance. The initial discharge capacity of this sample was 121 mA, h/g at 0. 05C rate （1C =171 m A, h/g ） ,which kept the capacity retention ratio of 86. 8% after 20 cycles.