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Researcher Wang Xiaohui’s research team from the Institute of Metal Research of the Chinese Academy of Sciences and Nanjing University of Aeronautics and Astronautics Professor Zhu Kongjun have recently used microwave hydrothermal synthesis to prepare nano-lithium iron phosphate (LiFePO4) in a pure water synthesis environment.
The valuable LiOH is recycled and reused
.
This work takes the lead in realizing the green and efficient synthesis of high-performance nano-LiFePO4 in a pure water synthesis environment, which will strongly promote its large-scale production
.
The effective utilization rate of the lithium source in this process is more than 90%, which greatly reduces the production cost.
The prepared nano-LiFePO4 has the highest yield so far, 1.
3mol/L, and exhibits excellent electrochemical performance, at a rate of 0.
1C The specific discharge capacity is 167mAhg-1.
After 1000 cycles of charge/discharge at a rate of 3C, 88% of the initial capacity can still be maintained, which can meet the practical application of large-scale energy storage
.
? LiFePO4 also has excellent thermal stability, high reversibility and acceptable working voltage, and has a significant competitive advantage as a positive polarity material
.
Previously, solvothermal method was used to prepare nano-LiFePO4, and the product has good electrochemical performance.
However, the method has low yield and high cost, and it cannot realize large-scale production
.
Compared with solvothermal method, the cost of preparing LiFePO4 by hydrothermal method is lower, but the electrochemical performance of the product is poor
.
Moreover, regardless of solvothermal synthesis or hydrothermal synthesis, the effective utilization of lithium source is not more than 1/3.
Therefore, how to use hydrothermal method to prepare high-performance nano-LiFePO4 and recycle the lithium source is not only to achieve large-scale water The technical problem of thermal preparation of nano-LiFePO4 is also an important scientific problem
.
The valuable LiOH is recycled and reused
.
This work takes the lead in realizing the green and efficient synthesis of high-performance nano-LiFePO4 in a pure water synthesis environment, which will strongly promote its large-scale production
.
The effective utilization rate of the lithium source in this process is more than 90%, which greatly reduces the production cost.
The prepared nano-LiFePO4 has the highest yield so far, 1.
3mol/L, and exhibits excellent electrochemical performance, at a rate of 0.
1C The specific discharge capacity is 167mAhg-1.
After 1000 cycles of charge/discharge at a rate of 3C, 88% of the initial capacity can still be maintained, which can meet the practical application of large-scale energy storage
.
? LiFePO4 also has excellent thermal stability, high reversibility and acceptable working voltage, and has a significant competitive advantage as a positive polarity material
.
Previously, solvothermal method was used to prepare nano-LiFePO4, and the product has good electrochemical performance.
However, the method has low yield and high cost, and it cannot realize large-scale production
.
Compared with solvothermal method, the cost of preparing LiFePO4 by hydrothermal method is lower, but the electrochemical performance of the product is poor
.
Moreover, regardless of solvothermal synthesis or hydrothermal synthesis, the effective utilization of lithium source is not more than 1/3.
Therefore, how to use hydrothermal method to prepare high-performance nano-LiFePO4 and recycle the lithium source is not only to achieve large-scale water The technical problem of thermal preparation of nano-LiFePO4 is also an important scientific problem
.
