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发明公开
CN106898735A 正极活性材料包覆液及其制备方法以及正极活性材料的包覆方法 有权

正极活性材料包覆液及其制备方法以及正极活性材料的包覆方法
摘要：
本发明涉及一种正极活性材料包覆液的制备方法，包括S1，在醇类溶剂中加入磷酸酯类化合物，得到磷酸酯溶液；S2，在该磷酸酯溶液中加入铝盐，该铝盐溶于该醇类溶剂，并与该磷酸酯类化合物反应得到均相的澄清溶液；以及S3，加入酸度调节剂调节该均相的澄清溶液的pH值至6~7，得到该正极活性材料包覆液。本发明还涉及一种正极活性材料包覆液以及一种正极活性材料的包覆方法。
摘要（英）：

The invention relates to a preparation method of a positive electrode active material coating liquid. The preparation method comprises the following steps: 1, adding a phosphate ester compound into an alcohol solvent to obtain a phosphate ester solution; 2, adding an aluminum salt to the phosphate ester solution, dissolving the aluminum salt in the phosphate ester solution, and reacting the obtained aluminum salt solution with the phosphate ester compound to obtain a homogenous clarified solution; and 3, adding an acidity regulator to adjust the pH value of the homogenous clarified solution to 6-7 in order to obtain the positive electrode active material coating liquid. The invention relates to the positive electrode active material coating liquid, and a coating method of a positive electrode active material.

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