从废旧动力电池中回收制备磷酸铁锂
发布时间：2019-06-26 11:05
【摘要】：以废旧磷酸铁锂动力电池正极材料为主要原料,采用传统固相法制备得到Li Fe PO4正极材料。采用X射线衍射光谱(XRD)、扫描电子显微镜(SEM)对其结构、形貌进行表征。用电池测试系统对其电化学性能进行了研究。结果表明,废旧Li Fe PO4正极材料在550℃氮气气氛下灼烧1 h除粘结剂后,添加少量原料调节碳含量,可制备结晶度较高的橄榄石结构Li Fe PO4。材料的晶型完整,外形为类球形,平均粒径约10μm。碳含量为5%的样品具有最佳的电化学性能,对应样品在0.1 C下的首次放电比容量为148.0 m Ah/g,1 C下放电循环50次,放电容量达到初始容量的98.9%,具有良好的高倍率充放电循环性能,适合大规模工业推广。
[Abstract]:Li Fe PO4 cathode material was prepared by traditional solid phase method with waste lithium iron phosphate power battery cathode material as main raw material. The structure and morphology were characterized by X-ray diffraction (XRD),) scanning electron microscope (SEM). The electrochemical properties of the battery test system were studied. The results show that olivine structure Li Fe PO4. with high crystallization can be prepared by burning waste Li Fe PO4 cathode material in nitrogen atmosphere at 550 鈩，
本文编号：2506135
[Abstract]:Li Fe PO4 cathode material was prepared by traditional solid phase method with waste lithium iron phosphate power battery cathode material as main raw material. The structure and morphology were characterized by X-ray diffraction (XRD),) scanning electron microscope (SEM). The electrochemical properties of the battery test system were studied. The results show that olivine structure Li Fe PO4. with high crystallization can be prepared by burning waste Li Fe PO4 cathode material in nitrogen atmosphere at 550 鈩，
本文编号：2506135
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