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Performance defects
Lithium iron phosphate has some performance defects, such as low vibration density and compaction density, resulting in lower energy density of lithium-ion batteries. The low-temperature performance is poor, and even if it is nanosized and coated with carbon, it does not solve this problem. The test results of lithium iron phosphate lithium-ion batteries indicate that they cannot operate electric vehicles at low temperatures (below 0 ℃). Although some manufacturers claim that the capacity retention rate of lithium iron phosphate batteries is good at low temperatures, it occurs when the discharge current is small and the discharge cutoff voltage is low, in which case the equipment cannot start working at all.
High manufacturing costs
The preparation cost of materials is relatively high compared to the manufacturing cost of batteries, resulting in low battery yield and poor consistency. The nanomaterialization and carbon coating of lithium iron phosphate have improved the electrochemical performance of the material, but they have also brought other problems, such as reduced energy density, increased synthesis costs, poor electrode processing performance, and strict environmental requirements. Although the chemical elements Li, Fe, and P in lithium iron phosphate are abundant and cost-effective, the cost of preparing lithium iron phosphate products is not low. Even after removing the previous research and development costs, the process cost of this material combined with the higher cost of preparing batteries will result in a higher cost per unit of energy storage.
Poor consistency
Poor product consistency. Whether it's from material preparation or production manufacturing. It is difficult to ensure product consistency, and the voltage platform of lithium iron phosphate is narrow, which increases the difficulty of battery observability due to updates.
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