采用液相共沉淀的方法制得前驱体,然后通过热处理得到LiFePO4/C。运用XRD和SEM研究反应时间和碳源对合成产物的晶体结构和表面形貌的影响。实验结果表明,反应时间和碳源对产物的性能有影响,60℃沉降60min得到的样品以0.1C充放电,首次放电比容量为149.4mAh/g。
The precursor was prepared by aqueous co-precipitation method. The LiFePO4/C was synthesized by the followed thermal-treated. The effects of reaction time and carbon sources on the crystal structure and morphology of the obtained materials were studied by XRD and SEM. The results showed reaction time and carbon sources had effects on the performance of the products. The initial discharge specific capacity of the material precipitated at 60 ℃ for 60 rain was 149.4 mAh/g at a discharge-charge rate of 0.1 C.