【摘要】：以廢舊磷酸鐵鋰動力電池正極材料為主要原料,采用傳統(tǒng)固相法制備得到Li Fe PO4正極材料。采用X射線衍射光譜(XRD)、掃描電子顯微鏡(SEM)對其結(jié)構(gòu)、形貌進(jìn)行表征。用電池測試系統(tǒng)對其電化學(xué)性能進(jìn)行了研究。結(jié)果表明,廢舊Li Fe PO4正極材料在550℃氮?dú)鈿夥障伦茻? h除粘結(jié)劑后,添加少量原料調(diào)節(jié)碳含量,可制備結(jié)晶度較高的橄欖石結(jié)構(gòu)Li Fe PO4。材料的晶型完整,外形為類球形,平均粒徑約10μm。碳含量為5%的樣品具有最佳的電化學(xué)性能,對應(yīng)樣品在0.1 C下的首次放電比容量為148.0 m Ah/g,1 C下放電循環(huán)50次,放電容量達(dá)到初始容量的98.9%,具有良好的高倍率充放電循環(huán)性能,適合大規(guī)模工業(yè)推廣。
[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，

本文編號：2506135