The influence of dispersant polyacrylamide (PAM) on the performance of cathode material LiFePO4 was studied by the metalloecope, SEM,XRD, gelvanastatic charge-discharge, electrochemical impedance and cyclic voltammetry methods. The dispersion property was the best when adding 0. 1％ PAM into LiFeP04,it ceuld restrain the agglomeration of activated material. The specific discharge capacity of cathode improved from 132.6 mAh/g (without adding dispersant) to 166.9 mAh/g when cycled at 0.1 C in 2.7 ～ 4.2 V, the cycle stability was improved.%利用金相显微镜、SEM、XRD、恒流充放电、电化学阻抗及循环伏安法,研究了分散剂聚丙烯酰胺(PAM)对正极材料LiFePO<,4>性能的影响.往LiFePO<,4>中加入0.1%PAM时,分散性能最好,能抑制活性物质团聚;以0.1 C在2.7～4.2 V循环,正极的首次放电比容量从未添加分散剂时的132.6 mAh/g提高到了166.9 mAh/g,循环稳定性增强.
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