A green and effective room-temperature recycling process of LiFePO4 cathode materials for lithium-ion batteries

2019 ◽  
Vol 85 ◽  
pp. 437-444 ◽  
Author(s):  
Li Li ◽  
Yifan Bian ◽  
Xiaoxiao Zhang ◽  
Ying Yao ◽  
Qing Xue ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Room Temperature ◽  
Lithium Ion ◽  
Recycling Process ◽  
Lifepo4 Cathode

scholarly journals High Discharge Rate Lithium Ion Batteries with the Composite Cathode of LiFePO4/Mesocarbon Nanobead

2010 ◽  
Vol 177 ◽  
pp. 208-210
Author(s):  
Yi Jie Gu ◽  
Cui Song Zeng ◽  
Yu Bo Chen ◽  
Hui Kang Wu ◽  
Hong Quan Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Room Temperature ◽  
Discharge Rate ◽  
Rate Capability ◽  
Lithium Ion ◽  
Composite Cathode ◽  
Rate Performance ◽  
High Discharge ◽  
High Discharge Rate ◽  
Lifepo4 Cathode

Olivine compounds LiFePO4 were prepared by the solid state reaction, and the electrochemical properties were studied with the composite cathode of LiFePO4/mesocarbon nanobead. High discharge rate performance can be achieved with the designed composite cathode of LiFePO4/mesocarbon nanobead. According to the experiment results, batteries with the composite cathode deliver discharge capacity of 1087mAh for 18650 type cell at 20C discharge rate at room temperature. The analysis shows that the uniformity of mesocarbon nanobead around LiFePO4 can supply enough change for electron transporting, which can enhance the rate capability for LiFePO4 cathode lithium ion batteries. It is confirmed that lithium ion batteries with LiFePO4 as cathode are suitable to electric vehicle application.

Recycling Process for Spent Cathode Materials of LiFePO4 Batteries

2019 ◽  
Vol 943 ◽  
pp. 141-148 ◽  
Author(s):  
Xiao Tong Jiang ◽  
Pan Wang ◽  
Long Hui Li ◽  
Jia Yu ◽  
Yu Xin Yin ◽  
...  
Keyword(s):  
High Temperature ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Solid Phase ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Carbon Layer ◽  
Lithium Content ◽  
Recycling Process ◽  
Gradual Loss

The cathode materials of LiFePO4 batteries decreases due to the gradual loss of lithium content during use. In this paper, the spent cathode materials were recycled with a carbon layer coated. The samples were prepared by a high temperature impurity removal procession and a solid phase repairing method. The LiFePO4 material obtained by the regeneration process has a discharge specific capacity of 105.4 mAh/g at 0.1 C after 10 cycles, and keeps it a considerable retention of 73.1 mAh/g at 1 C. This work provides a new routine in reusing lithium ion batteries.

scholarly journals A Sustainable Process for the Recovery of Anode and Cathode Materials Derived from Spent Lithium-Ion Batteries

2019 ◽  
Vol 11 (8) ◽  
pp. 2363 ◽  
Author(s):  
Guangwen Zhang ◽  
Zhongxing Du ◽  
Yaqun He ◽  
Haifeng Wang ◽  
Weining Xie ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Anode Materials ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Recycling Process ◽  
Flotation Process ◽  
Pyrolysis Characteristics ◽  
Spent Libs

The recovery of cathode and anode materials plays an important role in the recycling process of spent lithium-ion batteries (LIBs). Organic binders reduce the liberation efficiency and flotation efficiency of electrode materials derived from spent LIBs. In this study, pyrolysis technology is used to improve the recovery of cathode and anode materials from spent LIBs by removing organic binders. Pyrolysis characteristics of organics in electrode materials are investigated, and on this basis, the effects of pyrolysis parameters on the liberation efficiency of electrode materials are studied. Afterwards, flotation technology is used to separate cathode material from anode material. The results indicate that the optimum liberation efficiency of electrode materials is obtained at a pyrolysis temperature of 500 °C, a pyrolysis time of 15 min and a pyrolysis heating rate of 10 °C/min. At this time, the liberation efficiency of cathode materials is 98.23% and the liberation efficiency of anode materials is 98.89%. Phase characteristics of electrode materials cannot be changed under these pyrolysis conditions. Ultrasonic cleaning was used to remove pyrolytic residues to further improve the flotation efficiency of electrode materials. The cathode material grade was up to 93.89% with a recovery of 96.88% in the flotation process.

Graphene modified LiFePO4 cathode materials for high power lithium ion batteries

2011 ◽  
Vol 21 (10) ◽  
pp. 3353 ◽  
Author(s):  
Xufeng Zhou ◽  
Feng Wang ◽  
Yimei Zhu ◽  
Zhaoping Liu
Keyword(s):  
Lithium Ion Batteries ◽  
High Power ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Lifepo4 Cathode
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