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发明公开
CN108448079A 正极复合材料及其制备方法 有权

正极复合材料及其制备方法
摘要：
本发明提供一种正极复合材料的制备方法，包括：提供正极活性材料或正极活性材料前驱体、水和碳源，其中，所述碳源包括支链淀粉；将所述正极活性材料或所述正极活性材料前驱体、所述水和所述碳源混合，得到一混合液，其中，在所述混合液中，所述水和所述支链淀粉的质量比为10:1至400:1；将所述混合液进行喷雾干燥，得到一正极复合材料前驱体；烧结所述正极复合材料前驱体，得到所述正极复合材料。本发明还提供由所述制备方法获得的正极复合材料。所述制备方法可以获得高振实密度的正极复合材料。
摘要（英）：

The invention provides a preparation method of a positive composite material. The method comprises the steps of providing a positive active material or positive active material precursor, water and acarbon source, wherein the carbon source comprises amylopectin; mixing the positive active material or positive active material precursor with the water and the carbon source to obtain a mixed solution, wherein the mass ratio of the water to the amylopectin is 10:1 to 400:1 in the mixed solution; carrying out spray drying on the mixed solution to obtain a positive composite material precursor; andsintering the positive composite material precursor to obtain the positive composite material. The invention further provides the positive composite material obtained through the preparation method.According to the preparation method, the positive composite material with high tap density can be obtained.

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