公开(公告)号：US20140264185A1

公开(公告)日：2014-09-18

申请号：US13944457

申请日：2013-07-17

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyung Sun KIM ,  Byung Won CHO ,  Hwa Young LEE ,  Eun Jung SHIN ,  Soo KIM ,  Kyung Yoon CHUNG

IPC: C01B25/45 ,  H01M4/58 ,  C01B25/37 ,  H01M10/54

CPC classification number: C01B25/45 ,  C01B25/375 ,  H01M4/5825 ,  H01M10/54 ,  Y02W30/84

Abstract: The present invention relates to a method for recycling LiFePO4, which is an olivine-based cathode material for a lithium secondary battery. The present invention is characterized in that a cathode material including LiFePO4 is synthesized using, as precursors, amorphous FePO4.XH2O and crystalline FePO4.2H2O (metastrengite) obtained by chemically treating LiFePO4 as an olivine-based cathode material for a lithium secondary battery, which is produced from a waste battery. Since a cathode fabricated from the LiFePO4 cathode material synthesized according to the present invention does not deteriorate the capacity, output characteristics, cycle efficiency and performance of the secondary battery and the cathode material of the lithium secondary battery may be recycled, the secondary battery is economically efficient.

Abstract translation: 本发明涉及一种再循环LiFePO4的方法，该方法是锂二次电池的橄榄石型阴极材料。 本发明的特征在于，使用通过化学处理作为锂二次电池的橄榄石型阴极材料的LiFePO 4获得的无定形FePO 4·XH 2 O和结晶FePO 4·2H 2 O（钛金刚石）作为前体，合成了包含LiFePO 4的阴极材料， 是由废电池产生的。 由于由根据本发明合成的LiFePO 4阴极材料制造的阴极不会劣化二次电池和锂二次电池的正极材料的容量，输出特性，循环效率和性能可以再循环，所以二次电池是经济的 高效。